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 Axiom
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 (20220516 | Detects win.grateful_pos.)
rule win_grateful_pos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        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 = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 83f801 7510 e8???????? e8???????? }
            // n = 4, score = 600
            //   83f801               | cmp                 eax, 1
            //   7510                 | jne                 0x12
            //   e8????????           |                     
            //   e8????????           |                     

        $sequence_1 = { eb1a b8fdffffff eb13 b8fcffffff eb0c }
            // n = 5, score = 600
            //   eb1a                 | jmp                 0x1c
            //   b8fdffffff           | mov                 eax, 0xfffffffd
            //   eb13                 | jmp                 0x15
            //   b8fcffffff           | mov                 eax, 0xfffffffc
            //   eb0c                 | jmp                 0xe

        $sequence_2 = { 7411 e8???????? e8???????? 33c0 e9???????? }
            // n = 5, score = 600
            //   7411                 | je                  0x13
            //   e8????????           |                     
            //   e8????????           |                     
            //   33c0                 | xor                 eax, eax
            //   e9????????           |                     

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

        $sequence_6 = { e8???????? 83c40c 8d8d5cf9ffff 51 68de000000 8b9568f9ffff 52 }
            // n = 7, score = 500
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8d8d5cf9ffff         | lea                 ecx, [ebp - 0x6a4]
            //   51                   | push                ecx
            //   68de000000           | push                0xde
            //   8b9568f9ffff         | mov                 edx, dword ptr [ebp - 0x698]
            //   52                   | push                edx

        $sequence_7 = { 0fb68415fefffdff 83f87b 7d53 8b8df8fffdff 0fb6940dfbfffdff }
            // n = 5, score = 500
            //   0fb68415fefffdff     | movzx               eax, byte ptr [ebp + edx - 0x20002]
            //   83f87b               | cmp                 eax, 0x7b
            //   7d53                 | jge                 0x55
            //   8b8df8fffdff         | mov                 ecx, dword ptr [ebp - 0x20008]
            //   0fb6940dfbfffdff     | movzx               edx, byte ptr [ebp + ecx - 0x20005]

        $sequence_8 = { 0fb65508 0fb64d0c d3fa 8855ff 0fb64508 0fb64d0c }
            // n = 6, score = 500
            //   0fb65508             | movzx               edx, byte ptr [ebp + 8]
            //   0fb64d0c             | movzx               ecx, byte ptr [ebp + 0xc]
            //   d3fa                 | sar                 edx, cl
            //   8855ff               | mov                 byte ptr [ebp - 1], dl
            //   0fb64508             | movzx               eax, byte ptr [ebp + 8]
            //   0fb64d0c             | movzx               ecx, byte ptr [ebp + 0xc]

        $sequence_9 = { 7c6d 8b8df8fffdff 0fb6940dfbfffdff 83fa3a 7d5a }
            // n = 5, score = 500
            //   7c6d                 | jl                  0x6f
            //   8b8df8fffdff         | mov                 ecx, dword ptr [ebp - 0x20008]
            //   0fb6940dfbfffdff     | movzx               edx, byte ptr [ebp + ecx - 0x20005]
            //   83fa3a               | cmp                 edx, 0x3a
            //   7d5a                 | jge                 0x5c

        $sequence_10 = { 52 e8???????? 83c404 8b85f8fbffff e9???????? }
            // n = 5, score = 500
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8b85f8fbffff         | mov                 eax, dword ptr [ebp - 0x408]
            //   e9????????           |                     

        $sequence_11 = { 83fa3a 7d4f 8b85f8fffdff 0fb68c05fbfffdff 85c9 753d }
            // n = 6, score = 500
            //   83fa3a               | cmp                 edx, 0x3a
            //   7d4f                 | jge                 0x51
            //   8b85f8fffdff         | mov                 eax, dword ptr [ebp - 0x20008]
            //   0fb68c05fbfffdff     | movzx               ecx, byte ptr [ebp + eax - 0x20005]
            //   85c9                 | test                ecx, ecx
            //   753d                 | jne                 0x3f

        $sequence_12 = { 85c0 741d 6a03 68???????? 8b85e0fbffff }
            // n = 5, score = 500
            //   85c0                 | test                eax, eax
            //   741d                 | je                  0x1f
            //   6a03                 | push                3
            //   68????????           |                     
            //   8b85e0fbffff         | mov                 eax, dword ptr [ebp - 0x420]

        $sequence_13 = { 8b4508 0345fc 8810 ebdb }
            // n = 4, score = 500
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   0345fc               | add                 eax, dword ptr [ebp - 4]
            //   8810                 | mov                 byte ptr [eax], dl
            //   ebdb                 | jmp                 0xffffffdd

        $sequence_14 = { 48894530 eb00 488d057ec1feff 4883c420 }
            // n = 4, score = 200
            //   48894530             | dec                 eax
            //   eb00                 | mov                 dword ptr [ebp + 0x30], eax
            //   488d057ec1feff       | jmp                 2
            //   4883c420             | dec                 eax

        $sequence_15 = { 488d0d10d80100 0fbe0401 83f04d 888424f1000000 b801000000 486bc042 }
            // n = 6, score = 200
            //   488d0d10d80100       | lea                 eax, [0xfffec17e]
            //   0fbe0401             | dec                 eax
            //   83f04d               | add                 esp, 0x20
            //   888424f1000000       | dec                 eax
            //   b801000000           | lea                 ecx, [0x1d810]
            //   486bc042             | movsx               eax, byte ptr [ecx + eax]

    condition:
        7 of them and filesize < 3964928
}
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