SYMBOLCOMMON_NAMEaka. SYNONYMS
win.collectorgoomba (Back to overview)

CollectorGoomba

aka: Collector Stealer

There is no description at this point.

References
2022-11-26BushidoToken BlogBushidoToken
@online{bushidotoken:20221126:detecting:e5cee52, author = {BushidoToken}, title = {{Detecting and Fingerprinting Infostealer Malware-as-a-Service platforms}}, date = {2022-11-26}, organization = {BushidoToken Blog}, url = {https://blog.bushidotoken.net/2022/11/detecting-and-fingerprinting.html}, language = {English}, urldate = {2022-11-28} } Detecting and Fingerprinting Infostealer Malware-as-a-Service platforms
CollectorGoomba Misha TitanStealer
2020-07-01VMRayJohn Faria
@online{faria:20200701:threat:b9163dc, author = {John Faria}, title = {{Threat Bulletin: Cutting-off the Command-and-Control Infrastructure of CollectorGoomba}}, date = {2020-07-01}, organization = {VMRay}, url = {https://www.vmray.com/cyber-security-blog/cutting-off-command-and-control-infrastructure-collectorgoomba-threat-bulletin/}, language = {English}, urldate = {2020-07-02} } Threat Bulletin: Cutting-off the Command-and-Control Infrastructure of CollectorGoomba
CollectorGoomba
Yara Rules
[TLP:WHITE] win_collectorgoomba_auto (20230125 | Detects win.collectorgoomba.)
rule win_collectorgoomba_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.collectorgoomba."
        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.collectorgoomba"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { ff75fc 6a39 ff75e0 e8???????? 83c41c ff750c e8???????? }
            // n = 7, score = 200
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6a39                 | push                0x39
            //   ff75e0               | push                dword ptr [ebp - 0x20]
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   e8????????           |                     

        $sequence_1 = { eb9a c9 c3 55 8bec 51 51 }
            // n = 7, score = 200
            //   eb9a                 | jmp                 0xffffff9c
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   51                   | push                ecx
            //   51                   | push                ecx

        $sequence_2 = { ff7038 e8???????? 59 59 8b45fc 40 8b4d08 }
            // n = 7, score = 200
            //   ff7038               | push                dword ptr [eax + 0x38]
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   40                   | inc                 eax
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_3 = { ff7508 e8???????? 59 8945f8 837df800 7408 8b45f8 }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   837df800             | cmp                 dword ptr [ebp - 8], 0
            //   7408                 | je                  0xa
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]

        $sequence_4 = { ff7510 8b4dfc e8???????? 034508 50 e8???????? 83c40c }
            // n = 7, score = 200
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   034508               | add                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_5 = { eb07 8b45e8 40 8945e8 837dfc00 0f8ed1000000 8b45fc }
            // n = 7, score = 200
            //   eb07                 | jmp                 9
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   40                   | inc                 eax
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   0f8ed1000000         | jle                 0xd7
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_6 = { ff75a8 ff75d4 ffb54cffffff ff75f8 e8???????? 83c414 837de400 }
            // n = 7, score = 200
            //   ff75a8               | push                dword ptr [ebp - 0x58]
            //   ff75d4               | push                dword ptr [ebp - 0x2c]
            //   ffb54cffffff         | push                dword ptr [ebp - 0xb4]
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   837de400             | cmp                 dword ptr [ebp - 0x1c], 0

        $sequence_7 = { ff75f0 6a6d ff75f8 e8???????? 83c41c 8b45fc 6b0030 }
            // n = 7, score = 200
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   6a6d                 | push                0x6d
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   6b0030               | imul                eax, dword ptr [eax], 0x30

        $sequence_8 = { eb13 837df409 740d ff75e8 ff75f8 e8???????? 59 }
            // n = 7, score = 200
            //   eb13                 | jmp                 0x15
            //   837df409             | cmp                 dword ptr [ebp - 0xc], 9
            //   740d                 | je                  0xf
            //   ff75e8               | push                dword ptr [ebp - 0x18]
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_9 = { 8945f0 837df400 0f8e99000000 8b45dc 83e804 3945f4 7e08 }
            // n = 7, score = 200
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   837df400             | cmp                 dword ptr [ebp - 0xc], 0
            //   0f8e99000000         | jle                 0x9f
            //   8b45dc               | mov                 eax, dword ptr [ebp - 0x24]
            //   83e804               | sub                 eax, 4
            //   3945f4               | cmp                 dword ptr [ebp - 0xc], eax
            //   7e08                 | jle                 0xa

    condition:
        7 of them and filesize < 1400832
}
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