SYMBOLCOMMON_NAMEaka. SYNONYMS
win.finfisher (Back to overview)

FinFisher RAT

aka: FinSpy

FinFisher is a commercial software used to steal information and spy on affected victims. It began with few functionalities which included password harvesting and information leakage, but now it is mostly known for its full Remote Access Trojan (RAT) capabilities. It is mostly known for being used in governmental targeted and lawful criminal investigations. It is well known for its anti-detection capabilities and use of VMProtect.

References
2019-08-01Kaspersky LabsGReAT
@online{great:20190801:trends:5e25d5b, author = {GReAT}, title = {{APT trends report Q2 2019}}, date = {2019-08-01}, organization = {Kaspersky Labs}, url = {https://securelist.com/apt-trends-report-q2-2019/91897/}, language = {English}, urldate = {2020-08-13} } APT trends report Q2 2019
ZooPark magecart POWERSTATS Chaperone COMpfun EternalPetya FinFisher RAT HawkEye Keylogger HOPLIGHT Microcin NjRAT Olympic Destroyer PLEAD RokRAT Triton Zebrocy Microcin
2018-03-01MicrosoftOffice 365 Threat Research Team, Microsoft Defender ATP Research Team
@online{team:20180301:finfisher:e1de78f, author = {Office 365 Threat Research Team and Microsoft Defender ATP Research Team}, title = {{FinFisher exposed: A researcher’s tale of defeating traps, tricks, and complex virtual machines}}, date = {2018-03-01}, organization = {Microsoft}, url = {https://cloudblogs.microsoft.com/microsoftsecure/2018/03/01/finfisher-exposed-a-researchers-tale-of-defeating-traps-tricks-and-complex-virtual-machines/}, language = {English}, urldate = {2020-01-08} } FinFisher exposed: A researcher’s tale of defeating traps, tricks, and complex virtual machines
FinFisher RAT
2018-01-24ESET ResearchFilip Kafka
@techreport{kafka:20180124:esets:246a0d4, author = {Filip Kafka}, title = {{ESET’S GUIDE TODEOBFUSCATING AND DEVIRTUALIZING FINFISHER}}, date = {2018-01-24}, institution = {ESET Research}, url = {https://www.welivesecurity.com/wp-content/uploads/2018/01/WP-FinFisher.pdf}, language = {English}, urldate = {2020-01-13} } ESET’S GUIDE TODEOBFUSCATING AND DEVIRTUALIZING FINFISHER
FinFisher RAT
2018-01-23Möbius Strip Reverse EngineeringRolf Rolles
@online{rolles:20180123:walkthrough:afbbb08, author = {Rolf Rolles}, title = {{A Walk-Through Tutorial, with Code, on Statically Unpacking the FinSpy VM: Part One, x86 Deobfuscation}}, date = {2018-01-23}, organization = {Möbius Strip Reverse Engineering}, url = {http://www.msreverseengineering.com/blog/2018/1/23/a-walk-through-tutorial-with-code-on-statically-unpacking-the-finspy-vm-part-one-x86-deobfuscation}, language = {English}, urldate = {2020-01-08} } A Walk-Through Tutorial, with Code, on Statically Unpacking the FinSpy VM: Part One, x86 Deobfuscation
FinFisher RAT
2017-10-16Kaspersky LabsGReAT
@online{great:20171016:blackoasis:b447418, author = {GReAT}, title = {{BlackOasis APT and new targeted attacks leveraging zero-day exploit}}, date = {2017-10-16}, organization = {Kaspersky Labs}, url = {https://securelist.com/blackoasis-apt-and-new-targeted-attacks-leveraging-zero-day-exploit/82732/}, language = {English}, urldate = {2019-12-20} } BlackOasis APT and new targeted attacks leveraging zero-day exploit
FinFisher RAT BlackOasis
2017-09-21ESET ResearchFilip Kafka
@online{kafka:20170921:new:8bcb309, author = {Filip Kafka}, title = {{New FinFisher surveillance campaigns: Internet providers involved?}}, date = {2017-09-21}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2017/09/21/new-finfisher-surveillance-campaigns/}, language = {English}, urldate = {2019-11-14} } New FinFisher surveillance campaigns: Internet providers involved?
FinFisher RAT
2017-09-12FireEyeBen Read, Genwei Jiang, James T. Bennett
@online{read:20170912:fireeye:60e2846, author = {Ben Read and Genwei Jiang and James T. Bennett}, title = {{FireEye Uncovers CVE-2017-8759: Zero-Day Used in the Wild to Distribute FINSPY,FireEye Uncovers CVE-2017-8759: Zero-Day Used in the Wild to Distribute FINSPY}}, date = {2017-09-12}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2017/09/zero-day-used-to-distribute-finspy.html}, language = {English}, urldate = {2019-12-20} } FireEye Uncovers CVE-2017-8759: Zero-Day Used in the Wild to Distribute FINSPY,FireEye Uncovers CVE-2017-8759: Zero-Day Used in the Wild to Distribute FINSPY
FinFisher RAT BlackOasis
2017-07-18ElasticAshkan Hosseini
@online{hosseini:20170718:ten:af036b3, author = {Ashkan Hosseini}, title = {{Ten process injection techniques: A technical survey of common and trending process injection techniques}}, date = {2017-07-18}, organization = {Elastic}, url = {https://www.elastic.co/blog/ten-process-injection-techniques-technical-survey-common-and-trending-process}, language = {English}, urldate = {2020-07-15} } Ten process injection techniques: A technical survey of common and trending process injection techniques
Cryakl CyberGate Dridex FinFisher RAT Locky
2017-01-13Artem Baranov
@online{baranov:20170113:finfisher:436b89e, author = {Artem Baranov}, title = {{Finfisher rootkit analysis}}, date = {2017-01-13}, url = {https://artemonsecurity.blogspot.de/2017/01/finfisher-rootkit-analysis.html}, language = {English}, urldate = {2019-11-26} } Finfisher rootkit analysis
FinFisher RAT
2014-10-02CodeAndSecCodeAndSec
@online{codeandsec:20141002:finfisher:3b1d9c1, author = {CodeAndSec}, title = {{FinFisher Malware Analysis - Part 2}}, date = {2014-10-02}, organization = {CodeAndSec}, url = {https://www.codeandsec.com/FinFisher-Malware-Analysis-Part-2}, language = {English}, urldate = {2020-03-19} } FinFisher Malware Analysis - Part 2
FinFisher RAT
Yara Rules
[TLP:WHITE] win_finfisher_auto (20200817 | autogenerated rule brought to you by yara-signator)
rule win_finfisher_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.finfisher"
        malpedia_rule_date = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using yara-signator.
     * The code and documentation / approach is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 57 56 8d85ccf9ffff 50 e8???????? }
            // n = 5, score = 200
            //   57                   | push                edi
            //   56                   | push                esi
            //   8d85ccf9ffff         | lea                 eax, [ebp - 0x634]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_1 = { 68???????? 6804010000 8d85ccf9ffff 50 }
            // n = 4, score = 200
            //   68????????           |                     
            //   6804010000           | push                0x104
            //   8d85ccf9ffff         | lea                 eax, [ebp - 0x634]
            //   50                   | push                eax

        $sequence_2 = { 397714 7408 ff15???????? eb06 }
            // n = 4, score = 100
            //   397714               | cmp                 dword ptr [edi + 0x14], esi
            //   7408                 | je                  0xa
            //   ff15????????         |                     
            //   eb06                 | jmp                 8

        $sequence_3 = { ff750c ff15???????? 83f8ff 7509 c745e438fdffff eb62 8d45dc }
            // n = 7, score = 100
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   ff15????????         |                     
            //   83f8ff               | cmp                 eax, -1
            //   7509                 | jne                 0xb
            //   c745e438fdffff       | mov                 dword ptr [ebp - 0x1c], 0xfffffd38
            //   eb62                 | jmp                 0x64
            //   8d45dc               | lea                 eax, [ebp - 0x24]

        $sequence_4 = { 83f8ff 740e 3daaaaaaaa 7407 3ddddddddd 75dd ff37 }
            // n = 7, score = 100
            //   83f8ff               | cmp                 eax, -1
            //   740e                 | je                  0x10
            //   3daaaaaaaa           | cmp                 eax, 0xaaaaaaaa
            //   7407                 | je                  9
            //   3ddddddddd           | cmp                 eax, 0xdddddddd
            //   75dd                 | jne                 0xffffffdf
            //   ff37                 | push                dword ptr [edi]

        $sequence_5 = { 89b5c0f7ffff bf08020000 57 56 }
            // n = 4, score = 100
            //   89b5c0f7ffff         | mov                 dword ptr [ebp - 0x840], esi
            //   bf08020000           | mov                 edi, 0x208
            //   57                   | push                edi
            //   56                   | push                esi

        $sequence_6 = { e9???????? 8b790c 8b4718 83f8ff 740e 3daaaaaaaa }
            // n = 6, score = 100
            //   e9????????           |                     
            //   8b790c               | mov                 edi, dword ptr [ecx + 0xc]
            //   8b4718               | mov                 eax, dword ptr [edi + 0x18]
            //   83f8ff               | cmp                 eax, -1
            //   740e                 | je                  0x10
            //   3daaaaaaaa           | cmp                 eax, 0xaaaaaaaa

        $sequence_7 = { 8bd8 3bde 0f8571010000 56 }
            // n = 4, score = 100
            //   8bd8                 | mov                 ebx, eax
            //   3bde                 | cmp                 ebx, esi
            //   0f8571010000         | jne                 0x177
            //   56                   | push                esi

        $sequence_8 = { ffb58cedffff 6803000080 ff15???????? 3bc7 }
            // n = 4, score = 100
            //   ffb58cedffff         | push                dword ptr [ebp - 0x1274]
            //   6803000080           | push                0x80000003
            //   ff15????????         |                     
            //   3bc7                 | cmp                 eax, edi

        $sequence_9 = { 898580f9ffff 8b8580f9ffff 8b30 3bf3 74b0 56 }
            // n = 6, score = 100
            //   898580f9ffff         | mov                 dword ptr [ebp - 0x680], eax
            //   8b8580f9ffff         | mov                 eax, dword ptr [ebp - 0x680]
            //   8b30                 | mov                 esi, dword ptr [eax]
            //   3bf3                 | cmp                 esi, ebx
            //   74b0                 | je                  0xffffffb2
            //   56                   | push                esi

        $sequence_10 = { 85c0 74f0 8d85dcfdffff 50 50 e8???????? 40 }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   74f0                 | je                  0xfffffff2
            //   8d85dcfdffff         | lea                 eax, [ebp - 0x224]
            //   50                   | push                eax
            //   50                   | push                eax
            //   e8????????           |                     
            //   40                   | inc                 eax

        $sequence_11 = { 56 6a00 53 e8???????? 8b4704 83c40c 85c0 }
            // n = 7, score = 100
            //   56                   | push                esi
            //   6a00                 | push                0
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8b4704               | mov                 eax, dword ptr [edi + 4]
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax

        $sequence_12 = { 6a08 56 ff750c ffd7 3bc6 8945fc }
            // n = 6, score = 100
            //   6a08                 | push                8
            //   56                   | push                esi
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   ffd7                 | call                edi
            //   3bc6                 | cmp                 eax, esi
            //   8945fc               | mov                 dword ptr [ebp - 4], eax

        $sequence_13 = { 33db 43 395d0c 0f8534010000 }
            // n = 4, score = 100
            //   33db                 | xor                 ebx, ebx
            //   43                   | inc                 ebx
            //   395d0c               | cmp                 dword ptr [ebp + 0xc], ebx
            //   0f8534010000         | jne                 0x13a

    condition:
        7 of them and filesize < 262144
}
[TLP:WHITE] win_finfisher_w0   (20170517 | FinFisher FinSpy)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_finfisher_w0 {
    meta:
        description = "FinFisher FinSpy"
	    author = "botherder https://github.com/botherder"
	    source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/FinSpy.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.finfisher"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    strings:
        $password1 = /\/scomma kbd101\.sys/ wide ascii
        $password2 = /(N)AME,EMAIL CLIENT,EMAIL ADDRESS,SERVER NAME,SERVER TYPE,USERNAME,PASSWORD,PROFILE/ wide ascii
        $password3 = /\/scomma excel2010\.part/ wide ascii
        $password4 = /(A)PPLICATION,PROTOCOL,USERNAME,PASSWORD/ wide ascii
        $password5 = /\/stab MSVCR32\.manifest/ wide ascii
        $password6 = /\/scomma MSN2010\.dll/ wide ascii
        $password7 = /\/scomma Firefox\.base/ wide ascii
        $password8 = /(I)NDEX,URL,USERNAME,PASSWORD,USERNAME FIELD,PASSWORD FIELD,FILE,HTTP/ wide ascii
        $password9 = /\/scomma IE7setup\.sys/ wide ascii
        $password10 = /(O)RIGIN URL,ACTION URL,USERNAME FIELD,PASSWORD FIELD,USERNAME,PASSWORD,TIMESTAMP/ wide ascii
        $password11 = /\/scomma office2007\.cab/ wide ascii
        $password12 = /(U)RL,PASSWORD TYPE,USERNAME,PASSWORD,USERNAME FIELD,PASSWORD FIELD/ wide ascii
        $password13 = /\/scomma outlook2007\.dll/ wide ascii
        $password14 = /(F)ILENAME,ENCRYPTION,VERSION,CRC,PASSWORD 1,PASSWORD 2,PASSWORD 3,PATH,SIZE,LAST MODIFICATION DATE,ERROR/ wide ascii

        $screenrec1 = /(s)111o00000000\.dat/ wide ascii
        $screenrec2 = /(t)111o00000000\.dat/ wide ascii
        $screenrec3 = /(f)113o00000000\.dat/ wide ascii
        $screenrec4 = /(w)114o00000000\.dat/ wide ascii
        $screenrec5 = /(u)112Q00000000\.dat/ wide ascii
        $screenrec6 = /(v)112Q00000000\.dat/ wide ascii
        $screenrec7 = /(v)112O00000000\.dat/ wide ascii

        //$keylogger1 = /\<%s UTC %s\|%d\|%s\>/ wide ascii
        //$keylogger2 = /1201[0-9A-F]{8}\.dat/ wide ascii

        $micrec = /2101[0-9A-F]{8}\.dat/ wide ascii

        $skyperec1 = /\[%19s\] %25s\:    %s/ wide ascii
        $skyperec2 = /Global\\\{A48F1A32\-A340\-11D0\-BC6B\-00A0C903%\.04X\}/ wide
        $skyperec3 = /(1411|1421|1431|1451)[0-9A-F]{8}\.dat/ wide ascii

        $mouserec1 = /(m)sc183Q000\.dat/ wide ascii
        $mouserec2 = /2201[0-9A-F]{8}\.dat/ wide ascii

        $driver = /\\\\\\\\\.\\\\driverw/ wide ascii

        $janedow1 = /(J)ane Dow\'s x32 machine/ wide ascii
        $janedow2 = /(J)ane Dow\'s x64 machine/ wide ascii

        $versions1 = /(f)inspyv2/ nocase
        $versions2 = /(f)inspyv4/ nocase

        $bootkit1 = /(b)ootkit_x32driver/
        $bootkit2 = /(b)ootkit_x64driver/

        $typo1 = /(S)creenShort Recording/ wide

        $mssounddx = /(S)ystem\\CurrentControlSet\\Services\\mssounddx/ wide

    condition:
        8 of ($password*) or any of ($screenrec*) or $micrec or any of ($skyperec*) or any of ($mouserec*) or $driver or any of ($janedow*) or any of ($versions*) or any of ($bootkit*) or $typo1 or $mssounddx
}
[TLP:WHITE] win_finfisher_w1   (20170517 | FinFisher FinSpy)
rule win_finfisher_w1 {
    meta:
        description = "FinFisher FinSpy"
        author = "AlienVault Labs"
	    source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/FinSpy.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.finfisher"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    strings:
        $filter1 = "$password14"
        $filter2 = "$screenrec7"
        $filter3 = "$micrec"
        $filter4 = "$skyperec3"
        $filter5 = "$mouserec2"
        $filter6 = "$driver"
        $filter7 = "$janedow2"
        $filter8 = "$bootkit2"

        $password1 = /\/scomma kbd101\.sys/ wide ascii
        $password2 = /(N)AME,EMAIL CLIENT,EMAIL ADDRESS,SERVER NAME,SERVER TYPE,USERNAME,PASSWORD,PROFILE/ wide ascii
        $password3 = /\/scomma excel2010\.part/ wide ascii
        $password4 = /(A)PPLICATION,PROTOCOL,USERNAME,PASSWORD/ wide ascii
        $password5 = /\/stab MSVCR32\.manifest/ wide ascii
        $password6 = /\/scomma MSN2010\.dll/ wide ascii
        $password7 = /\/scomma Firefox\.base/ wide ascii
        $password8 = /(I)NDEX,URL,USERNAME,PASSWORD,USERNAME FIELD,PASSWORD FIELD,FILE,HTTP/ wide ascii
        $password9 = /\/scomma IE7setup\.sys/ wide ascii
        $password10 = /(O)RIGIN URL,ACTION URL,USERNAME FIELD,PASSWORD FIELD,USERNAME,PASSWORD,TIMESTAMP/ wide ascii
        $password11 = /\/scomma office2007\.cab/ wide ascii
        $password12 = /(U)RL,PASSWORD TYPE,USERNAME,PASSWORD,USERNAME FIELD,PASSWORD FIELD/ wide ascii
        $password13 = /\/scomma outlook2007\.dll/ wide ascii
        $password14 = /(F)ILENAME,ENCRYPTION,VERSION,CRC,PASSWORD 1,PASSWORD 2,PASSWORD 3,PATH,SIZE,LAST MODIFICATION DATE,ERROR/ wide ascii

        $screenrec1 = /(s)111o00000000\.dat/ wide ascii
        $screenrec2 = /(t)111o00000000\.dat/ wide ascii
        $screenrec3 = /(f)113o00000000\.dat/ wide ascii
        $screenrec4 = /(w)114o00000000\.dat/ wide ascii
        $screenrec5 = /(u)112Q00000000\.dat/ wide ascii
        $screenrec6 = /(v)112Q00000000\.dat/ wide ascii
        $screenrec7 = /(v)112O00000000\.dat/ wide ascii

        //$keylogger1 = /\<%s UTC %s\|%d\|%s\>/ wide ascii
        //$keylogger2 = /1201[0-9A-F]{8}\.dat/ wide ascii

        $micrec = /2101[0-9A-F]{8}\.dat/ wide ascii

        $skyperec1 = /\[%19s\] %25s\:    %s/ wide ascii
        $skyperec2 = /Global\\\{A48F1A32\-A340\-11D0\-BC6B\-00A0C903%\.04X\}/ wide
        //$skyperec3 = /(1411|1421|1431|1451)[0-9A-F]{8}\.dat/ wide ascii

        //$mouserec1 = /(m)sc183Q000\.dat/ wide ascii
        //$mouserec2 = /2201[0-9A-F]{8}\.dat/ wide ascii

        $driver = /\\\\\\\\\.\\\\driverw/ wide ascii

        $janedow1 = /(J)ane Dow\'s x32 machine/ wide ascii
        $janedow2 = /(J)ane Dow\'s x64 machine/ wide ascii

        //$versions1 = /(f)inspyv2/ nocase
        //$versions2 = /(f)inspyv4/ nocase

        $bootkit1 = /(b)ootkit_x32driver/
        $bootkit2 = /(b)ootkit_x64driver/

        $typo1 = /(S)creenShort Recording/ wide

        $mssounddx = /(S)ystem\\CurrentControlSet\\Services\\mssounddx/ wide

    condition:
        (8 of ($password*) or any of ($screenrec*) or $micrec or any of ($skyperec*) or $driver or any of ($janedow*) or any of ($bootkit*) or $typo1 or $mssounddx) and not any of ($filter*)
}
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