SYMBOLCOMMON_NAMEaka. SYNONYMS
win.grateful_pos (Back to overview)

Grateful POS

aka: FrameworkPOS, SCRAPMINT, trinity

Actor(s): Skeleton Spider, FIN6


POS malware targets systems that run physical point-of-sale device and operates by inspecting the process memory for data that matches the structure of credit card data (Track1 and Track2 data), such as the account number, expiration date, and other information stored on a card’s magnetic stripe. After the cards are first scanned, the personal account number (PAN) and accompanying data sit in the point-of-sale system’s memory unencrypted while the system determines where to send it for authorization.
Masked as the LogMein software, the GratefulPOS malware appears to have emerged during the fall 2017 shopping season with low detection ratio according to some of the earliest detections displayed on VirusTotal. The first sample was upload in November 2017. Additionally, this malware appears to be related to the Framework POS malware, which was linked to some of the high-profile merchant breaches in the past.

References
2021SecureworksSecureWorks
@online{secureworks:2021:threat:c0ba914, author = {SecureWorks}, title = {{Threat Profile: GOLD FRANKLIN}}, date = {2021}, organization = {Secureworks}, url = {http://www.secureworks.com/research/threat-profiles/gold-franklin}, language = {English}, urldate = {2021-05-31} } Threat Profile: GOLD FRANKLIN
Grateful POS Meterpreter MimiKatz RemCom FIN6
2020-03-03PWC UKPWC UK
@techreport{uk:20200303:cyber:1f1eef0, author = {PWC UK}, title = {{Cyber Threats 2019:A Year in Retrospect}}, date = {2020-03-03}, institution = {PWC UK}, url = {https://www.pwc.co.uk/cyber-security/assets/cyber-threats-2019-retrospect.pdf}, language = {English}, urldate = {2020-03-03} } Cyber Threats 2019:A Year in Retrospect
KevDroid MESSAGETAP magecart AndroMut Cobalt Strike CobInt Crimson RAT DNSpionage Dridex Dtrack Emotet FlawedAmmyy FlawedGrace FriedEx Gandcrab Get2 GlobeImposter Grateful POS ISFB Kazuar LockerGoga Nokki QakBot Ramnit REvil Rifdoor RokRAT Ryuk shadowhammer ShadowPad Shifu Skipper StoneDrill Stuxnet TrickBot Winnti ZeroCleare APT41 MUSTANG PANDA
2020-02-19FireEyeFireEye
@online{fireeye:20200219:mtrends:193613a, author = {FireEye}, title = {{M-Trends 2020}}, date = {2020-02-19}, organization = {FireEye}, url = {https://content.fireeye.com/m-trends/rpt-m-trends-2020}, language = {English}, urldate = {2020-02-20} } M-Trends 2020
Cobalt Strike Grateful POS LockerGoga QakBot TrickBot
2020-02-13QianxinQi Anxin Threat Intelligence Center
@techreport{center:20200213:report:146d333, author = {Qi Anxin Threat Intelligence Center}, title = {{APT Report 2019}}, date = {2020-02-13}, institution = {Qianxin}, url = {https://ti.qianxin.com/uploads/2020/02/13/cb78386a082f465f259b37dae5df4884.pdf}, language = {English}, urldate = {2020-02-27} } APT Report 2019
Chrysaor Exodus Dacls VPNFilter DNSRat Griffon KopiLuwak More_eggs SQLRat AppleJeus BONDUPDATER Agent.BTZ Anchor AndroMut AppleJeus BOOSTWRITE Brambul Carbanak Cobalt Strike Dacls DistTrack DNSpionage Dtrack ELECTRICFISH FlawedAmmyy FlawedGrace Get2 Grateful POS HOPLIGHT Imminent Monitor RAT jason Joanap KerrDown KEYMARBLE Lambert LightNeuron LoJax MiniDuke PolyglotDuke PowerRatankba Rising Sun SDBbot ServHelper Snatch Stuxnet TinyMet tRat TrickBot Volgmer X-Agent Zebrocy
2019-12-23Norfolk
@online{norfolk:20191223:pos:5862d6d, author = {Norfolk}, title = {{POS Malware Used at Fuel Pumps}}, date = {2019-12-23}, url = {https://norfolkinfosec.com/pos-malware-used-at-fuel-pumps/}, language = {English}, urldate = {2020-01-07} } POS Malware Used at Fuel Pumps
Grateful POS
2019-12VISAVisa Security Alert
@techreport{alert:201912:cybercrime:b12d39c, author = {Visa Security Alert}, title = {{Cybercrime Groups (FIN8) Targeting Fuel Dispenser Merchants}}, date = {2019-12}, institution = {VISA}, url = {https://usa.visa.com/dam/VCOM/global/support-legal/documents/cybercrime-groups-targeting-fuel-dispenser-merchants.pdf}, language = {English}, urldate = {2020-07-23} } Cybercrime Groups (FIN8) Targeting Fuel Dispenser Merchants
Grateful POS
2019-05-01Red CanaryTony Lambert
@online{lambert:20190501:frameworkpos:376a823, author = {Tony Lambert}, title = {{FrameworkPOS and the adequate persistent threat}}, date = {2019-05-01}, organization = {Red Canary}, url = {https://redcanary.com/blog/frameworkpos-and-the-adequate-persistent-threat/}, language = {English}, urldate = {2020-01-29} } FrameworkPOS and the adequate persistent threat
Grateful POS
2017-12-13Vitali Kremez BlogVitali Kremez
@online{kremez:20171213:update:50a1f16, author = {Vitali Kremez}, title = {{Update: Let's Learn: Reversing FIN6 "GratefulPOS" aka "FrameworkPOS" Point-of-Sale Malware in-Depth}}, date = {2017-12-13}, organization = {Vitali Kremez Blog}, url = {http://www.vkremez.com/2017/12/lets-learn-reversing-grateful-point-of.html}, language = {English}, urldate = {2020-01-08} } Update: Let's Learn: Reversing FIN6 "GratefulPOS" aka "FrameworkPOS" Point-of-Sale Malware in-Depth
Grateful POS
2017-12-08RSAKent Beckman
@online{beckman:20171208:gratefulpos:0ba1053, author = {Kent Beckman}, title = {{GratefulPOS credit card stealing malware - just in time for the shopping season}}, date = {2017-12-08}, organization = {RSA}, url = {https://community.rsa.com/community/products/netwitness/blog/2017/12/08/gratefulpos-credit-card-stealing-malware-just-in-time-for-the-shopping-season}, language = {English}, urldate = {2020-01-08} } GratefulPOS credit card stealing malware - just in time for the shopping season
Grateful POS
2016-04FireEyeFireEye
@techreport{fireeye:201604:follow:5df2e81, author = {FireEye}, title = {{Follow the Money: Dissecting the Operations of the Cyber Crime Group FIN6}}, date = {2016-04}, institution = {FireEye}, url = {https://www2.fireeye.com/rs/848-DID-242/images/rpt-fin6.pdf}, language = {English}, urldate = {2020-04-23} } Follow the Money: Dissecting the Operations of the Cyber Crime Group FIN6
Grateful POS FIN6
Yara Rules
[TLP:WHITE] win_grateful_pos_auto (20221125 | Detects win.grateful_pos.)
rule win_grateful_pos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.grateful_pos."
        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.grateful_pos"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { 7411 e8???????? e8???????? 33c0 e9???????? }
            // n = 5, score = 600
            //   7411                 | je                  0x13
            //   e8????????           |                     
            //   e8????????           |                     
            //   33c0                 | xor                 eax, eax
            //   e9????????           |                     

        $sequence_1 = { e8???????? 83f801 7510 e8???????? e8???????? }
            // n = 5, score = 600
            //   e8????????           |                     
            //   83f801               | cmp                 eax, 1
            //   7510                 | jne                 0x12
            //   e8????????           |                     
            //   e8????????           |                     

        $sequence_2 = { eb07 b8fcffffff eb02 33c0 }
            // n = 4, score = 600
            //   eb07                 | jmp                 9
            //   b8fcffffff           | mov                 eax, 0xfffffffc
            //   eb02                 | jmp                 4
            //   33c0                 | xor                 eax, eax

        $sequence_3 = { e8???????? 99 b980ee3600 f7f9 }
            // n = 4, score = 600
            //   e8????????           |                     
            //   99                   | cdq                 
            //   b980ee3600           | mov                 ecx, 0x36ee80
            //   f7f9                 | idiv                ecx

        $sequence_4 = { 7407 b8f6ffffff eb02 33c0 }
            // n = 4, score = 600
            //   7407                 | je                  9
            //   b8f6ffffff           | mov                 eax, 0xfffffff6
            //   eb02                 | jmp                 4
            //   33c0                 | xor                 eax, eax

        $sequence_5 = { b8feffffff eb1a b8fdffffff eb13 b8fcffffff eb0c }
            // n = 6, score = 600
            //   b8feffffff           | mov                 eax, 0xfffffffe
            //   eb1a                 | jmp                 0x1c
            //   b8fdffffff           | mov                 eax, 0xfffffffd
            //   eb13                 | jmp                 0x15
            //   b8fcffffff           | mov                 eax, 0xfffffffc
            //   eb0c                 | jmp                 0xe

        $sequence_6 = { c78564f9ffff00000000 eb0f 8b8564f9ffff 83c001 898564f9ffff 8b8d64f9ffff }
            // n = 6, score = 500
            //   c78564f9ffff00000000     | mov    dword ptr [ebp - 0x69c], 0
            //   eb0f                 | jmp                 0x11
            //   8b8564f9ffff         | mov                 eax, dword ptr [ebp - 0x69c]
            //   83c001               | add                 eax, 1
            //   898564f9ffff         | mov                 dword ptr [ebp - 0x69c], eax
            //   8b8d64f9ffff         | mov                 ecx, dword ptr [ebp - 0x69c]

        $sequence_7 = { 668955fa 8d45b4 50 e8???????? 83c404 }
            // n = 5, score = 500
            //   668955fa             | je                  0x16
            //   8d45b4               | dec                 eax
            //   50                   | mov                 ecx, ebx
            //   e8????????           |                     
            //   83c404               | push                edx

        $sequence_8 = { 8b8d6cf9ffff c1e10a 81c1???????? 51 e8???????? 83c40c 85c0 }
            // n = 7, score = 500
            //   8b8d6cf9ffff         | add                 esp, 4
            //   c1e10a               | mov                 eax, dword ptr [ebp - 0x408]
            //   81c1????????         |                     
            //   51                   | mov                 word ptr [ebp - 6], dx
            //   e8????????           |                     
            //   83c40c               | lea                 eax, [ebp - 0x4c]
            //   85c0                 | push                eax

        $sequence_9 = { 8b0d???????? c1e10a 3bc1 761a 8b95f0fbffff 52 e8???????? }
            // n = 7, score = 500
            //   8b0d????????         |                     
            //   c1e10a               | add                 esp, 4
            //   3bc1                 | je                  0x5a
            //   761a                 | mov                 dword ptr [ebp - 0x69c], 0
            //   8b95f0fbffff         | jmp                 0x11
            //   52                   | mov                 eax, dword ptr [ebp - 0x69c]
            //   e8????????           |                     

        $sequence_10 = { 52 e8???????? 83c40c 6a3c 8b450c }
            // n = 5, score = 500
            //   52                   | imul                eax, eax, 8
            //   e8????????           |                     
            //   83c40c               | dec                 eax
            //   6a3c                 | lea                 ecx, [0x1c95e]
            //   8b450c               | movsx               eax, byte ptr [ecx + eax]

        $sequence_11 = { 83f24d 8855d7 b801000000 6bc024 }
            // n = 4, score = 500
            //   83f24d               | xor                 edx, 0x4d
            //   8855d7               | mov                 byte ptr [ebp - 0x29], dl
            //   b801000000           | mov                 eax, 1
            //   6bc024               | imul                eax, eax, 0x24

        $sequence_12 = { e8???????? 83c404 8b85f8fbffff e9???????? }
            // n = 4, score = 500
            //   e8????????           |                     
            //   83c404               | dec                 ecx
            //   8b85f8fbffff         | cmp                 ebx, esi
            //   e9????????           |                     

        $sequence_13 = { 51 8d9574f9ffff 52 8d8574fdffff }
            // n = 4, score = 500
            //   51                   | cmp                 eax, -1
            //   8d9574f9ffff         | jne                 0x28
            //   52                   | dec                 esp
            //   8d8574fdffff         | lea                 esi, [0x25d11]

        $sequence_14 = { 0fbe0401 83f04d 888424b7000000 b801000000 486bc008 488d0d5ec90100 0fbe0401 }
            // n = 7, score = 200
            //   0fbe0401             | mov                 eax, dword ptr [esp + 0x50]
            //   83f04d               | dec                 eax
            //   888424b7000000       | lea                 ecx, [0x19084a]
            //   b801000000           | dec                 eax
            //   486bc008             | mov                 eax, dword ptr [ecx + eax*8]
            //   488d0d5ec90100       | inc                 ecx
            //   0fbe0401             | test                byte ptr [esp + eax + 8], 0x40

        $sequence_15 = { 488d0d4a081900 488b04c1 41f644040840 740a 41803e1a 0f8456f9ffff e8???????? }
            // n = 7, score = 200
            //   488d0d4a081900       | dec                 eax
            //   488b04c1             | lea                 ecx, [0x19084a]
            //   41f644040840         | dec                 eax
            //   740a                 | mov                 eax, dword ptr [ecx + eax*8]
            //   41803e1a             | inc                 ecx
            //   0f8456f9ffff         | test                byte ptr [esp + eax + 8], 0x40
            //   e8????????           |                     

    condition:
        7 of them and filesize < 3964928
}
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