SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sakula_rat (Back to overview)

Sakula RAT

aka: Sakurel

Actor(s): APT 26, Hurricane Panda


Sakula / Sakurel is a trojan horse that opens a back door and downloads potentially malicious files onto the compromised computer.

References
2018-11-16CyberThreatIntelligence BlogAction09
@online{action09:20181116:c0ld:89e6c06, author = {Action09}, title = {{(C)0ld Case : From Aerospace to China’s interests.}}, date = {2018-11-16}, organization = {CyberThreatIntelligence Blog}, url = {https://cyberthreatintelligenceblog.wordpress.com/2018/11/16/c0ld-case-from-aerospace-to-chinas-interests/}, language = {English}, urldate = {2020-01-07} } (C)0ld Case : From Aerospace to China’s interests.
Sakula RAT
2016-07-14Github (nccgroup)NCC Group PLC
@online{plc:20160714:technical:a0afcbd, author = {NCC Group PLC}, title = {{Technical Notes on Sakula}}, date = {2016-07-14}, organization = {Github (nccgroup)}, url = {https://github.com/nccgroup/Cyber-Defence/tree/master/Technical%20Notes/Sakula}, language = {English}, urldate = {2020-01-08} } Technical Notes on Sakula
Sakula RAT
2015-08-06SymantecJon DiMaggio
@techreport{dimaggio:20150806:black:b0fbb35, author = {Jon DiMaggio}, title = {{The Black Vine cyberespionage group}}, date = {2015-08-06}, institution = {Symantec}, url = {https://www-west.symantec.com/content/dam/symantec/docs/security-center/white-papers/black-vine-cyberespionage-group-15-en.pdf}, language = {English}, urldate = {2020-04-21} } The Black Vine cyberespionage group
Sakula RAT Shell Crew
2015-07-30SecureworksDell Secureworks CTU
@online{ctu:20150730:sakula:8025917, author = {Dell Secureworks CTU}, title = {{Sakula Malware Family}}, date = {2015-07-30}, organization = {Secureworks}, url = {https://www.secureworks.com/research/sakula-malware-family}, language = {English}, urldate = {2020-01-06} } Sakula Malware Family
Sakula RAT
2015-02-06CrowdStrikeCrowdStrike
@techreport{crowdstrike:20150206:crowdstrike:fbcc37f, author = {CrowdStrike}, title = {{CrowdStrike Global Threat Intel Report 2014}}, date = {2015-02-06}, institution = {CrowdStrike}, url = {https://web.archive.org/web/20200509171721/https://raw.githubusercontent.com/fdiskyou/threat-INTel/master/2015/GlobalThreatIntelReport.pdf}, language = {English}, urldate = {2020-05-11} } CrowdStrike Global Threat Intel Report 2014
BlackPOS CryptoLocker Derusbi Elise Enfal EvilGrab Gameover P2P HttpBrowser Medusa Mirage Naikon NetTraveler pirpi PlugX Poison Ivy Sakula RAT Sinowal sykipot taidoor
2014-02-23SymantecSymantec
@online{symantec:20140223:trojansakurel:9674bd4, author = {Symantec}, title = {{Trojan.Sakurel}}, date = {2014-02-23}, organization = {Symantec}, url = {https://www.symantec.com/security_response/writeup.jsp?docid=2014-022401-3212-99}, language = {English}, urldate = {2020-01-06} } Trojan.Sakurel
Sakula RAT
Yara Rules
[TLP:WHITE] win_sakula_rat_auto (20210616 | Detects win.sakula_rat.)
rule win_sakula_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.sakula_rat."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_rule_date = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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 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 = { 6a00 6800010000 6a00 6a00 68???????? }
            // n = 5, score = 300
            //   6a00                 | push                0
            //   6800010000           | push                0x100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   68????????           |                     

        $sequence_1 = { 83f8ff 7523 6a00 6880000000 6a01 6a00 }
            // n = 6, score = 200
            //   83f8ff               | cmp                 eax, -1
            //   7523                 | jne                 0x25
            //   6a00                 | push                0
            //   6880000000           | push                0x80
            //   6a01                 | push                1
            //   6a00                 | push                0

        $sequence_2 = { 56 6a00 8bf8 ff15???????? 8bf0 56 }
            // n = 6, score = 200
            //   56                   | push                esi
            //   6a00                 | push                0
            //   8bf8                 | mov                 edi, eax
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   56                   | push                esi

        $sequence_3 = { 6a01 6a00 6a00 6800000040 57 ff15???????? a3???????? }
            // n = 7, score = 200
            //   6a01                 | push                1
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6800000040           | push                0x40000000
            //   57                   | push                edi
            //   ff15????????         |                     
            //   a3????????           |                     

        $sequence_4 = { c3 680000b000 e8???????? 83c404 5b 85c0 }
            // n = 6, score = 200
            //   c3                   | ret                 
            //   680000b000           | push                0xb00000
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   5b                   | pop                 ebx
            //   85c0                 | test                eax, eax

        $sequence_5 = { 742d 46 83fe03 7cd6 a1???????? 40 }
            // n = 6, score = 200
            //   742d                 | je                  0x2f
            //   46                   | inc                 esi
            //   83fe03               | cmp                 esi, 3
            //   7cd6                 | jl                  0xffffffd8
            //   a1????????           |                     
            //   40                   | inc                 eax

        $sequence_6 = { 895008 8b15???????? 89480c 895010 8d442408 50 8d8c244c010000 }
            // n = 7, score = 200
            //   895008               | mov                 dword ptr [eax + 8], edx
            //   8b15????????         |                     
            //   89480c               | mov                 dword ptr [eax + 0xc], ecx
            //   895010               | mov                 dword ptr [eax + 0x10], edx
            //   8d442408             | lea                 eax, dword ptr [esp + 8]
            //   50                   | push                eax
            //   8d8c244c010000       | lea                 ecx, dword ptr [esp + 0x14c]

        $sequence_7 = { 33db 6803010000 8d84244d010000 53 50 889c2454010000 e8???????? }
            // n = 7, score = 200
            //   33db                 | xor                 ebx, ebx
            //   6803010000           | push                0x103
            //   8d84244d010000       | lea                 eax, dword ptr [esp + 0x14d]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   889c2454010000       | mov                 byte ptr [esp + 0x154], bl
            //   e8????????           |                     

        $sequence_8 = { 52 8b4d0c 8b5d08 83f900 740e }
            // n = 5, score = 100
            //   52                   | push                edx
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   83f900               | cmp                 ecx, 0
            //   740e                 | je                  0x10

        $sequence_9 = { ff75f4 e8???????? 83c410 31c0 40 }
            // n = 5, score = 100
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   31c0                 | xor                 eax, eax
            //   40                   | inc                 eax

        $sequence_10 = { e8???????? 83c408 ff75f4 ff75fc }
            // n = 4, score = 100
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   ff75fc               | push                dword ptr [ebp - 4]

        $sequence_11 = { e8???????? 83c404 8945f8 83f800 7445 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   83f800               | cmp                 eax, 0
            //   7445                 | je                  0x47

        $sequence_12 = { ff7508 e8???????? 83c404 83f800 0f84aa010000 6a0c }
            // n = 6, score = 100
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   83f800               | cmp                 eax, 0
            //   0f84aa010000         | je                  0x1b0
            //   6a0c                 | push                0xc

        $sequence_13 = { 83f800 7443 ff75fc 6a01 ff75f8 ff75f4 }
            // n = 6, score = 100
            //   83f800               | cmp                 eax, 0
            //   7443                 | je                  0x45
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6a01                 | push                1
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff75f4               | push                dword ptr [ebp - 0xc]

        $sequence_14 = { 6a01 68???????? ff75e4 e8???????? 83c404 50 ff75e4 }
            // n = 7, score = 100
            //   6a01                 | push                1
            //   68????????           |                     
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   50                   | push                eax
            //   ff75e4               | push                dword ptr [ebp - 0x1c]

    condition:
        7 of them and filesize < 229376
}
[TLP:WHITE] win_sakula_rat_w0   (20170517 | Sakula v1.0)
/*
    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_sakula_rat_w0 {
    meta:
        description = "Sakula v1.0"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of ($m*) and not $v1_1
}
[TLP:WHITE] win_sakula_rat_w1   (20170517 | Sakula v1.1)
/*
    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_sakula_rat_w1 {
    meta:
        description = "Sakula v1.1"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of them
}
[TLP:WHITE] win_sakula_rat_w2   (20170517 | Sakula v1.2)
/*
    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_sakula_rat_w2 {
    meta:
        description = "Sakula v1.2"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"
        $v1_2 = "CCPUpdate"

    condition:
        $m1 and $m2 and $m3 and $v1_2 and not $v1_1
}
[TLP:WHITE] win_sakula_rat_w3   (20170517 | Sakula v1.3)
/*
    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_sakula_rat_w3 {
    meta:
        description = "Sakula v1.3"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_3 = { 81 3E 78 03 00 00 75 57  8D 54 24 14 52 68 0C 05 41 00 68 01 00 00 80 FF  15 00 F0 40 00 85 C0 74 10 8B 44 24 14 68 2C 31  41 00 50 FF 15 10 F0 40 00 8B 4C 24 14 51 FF 15  24 F0 40 00 E8 0F 09 00 }

    condition:
        all of them
}
[TLP:WHITE] win_sakula_rat_w4   (20170517 | Sakula v1.4)
/*
    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_sakula_rat_w4 {
    meta:
        description = "Sakula v1.4"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_4 = { 50 E8 CD FC FF FF 83 C4  04 68 E8 03 00 00 FF D7 56 E8 54 12 00 00 E9 AE  FE FF FF E8 13 F5 FF FF }

    condition:
        all of them
}
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