SYMBOLCOMMON_NAMEaka. SYNONYMS
win.webc2_table (Back to overview)

WebC2-Table

Actor(s): Comment Crew


There is no description at this point.

References
2018MandiantMandiant
@techreport{mandiant:2018:apt1:b76cc4d, author = {Mandiant}, title = {{APT1}}, date = {2018}, institution = {Mandiant}, url = {https://github.com/securitykitten/malware_references/blob/master/Appendix%20C%20(Digital)%20-%20The%20Malware%20Arsenal.pdf}, language = {English}, urldate = {2020-01-13} } APT1
Auriga Biscuit Bouncer Combos CookieBag Dairy GetMail GlooxMail Goggles Hacksfase Helauto Kurton ManItsMe MAPIget MiniASP NewsReels SeaSalt StarsyPound Sword TabMsgSQL Tarsip WebC2-AdSpace WebC2-Ausov WebC2-Bolid WebC2-Cson WebC2-DIV WebC2-GreenCat WebC2-Head WebC2-Kt3 WebC2-Qbp WebC2-Rave WebC2-Table WebC2-UGX WebC2-Yahoo
Yara Rules
[TLP:WHITE] win_webc2_table_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_webc2_table_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.webc2_table"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 50 8d85d8faffff 50 e8???????? 8d85d8faffff 50 8d85e4fdffff }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d85d8faffff         | lea                 eax, [ebp - 0x528]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d85d8faffff         | lea                 eax, [ebp - 0x528]
            //   50                   | push                eax
            //   8d85e4fdffff         | lea                 eax, [ebp - 0x21c]

        $sequence_1 = { eb4a 8d851cfcffff 50 8d45d8 50 e8???????? 59 }
            // n = 7, score = 100
            //   eb4a                 | jmp                 0x4c
            //   8d851cfcffff         | lea                 eax, [ebp - 0x3e4]
            //   50                   | push                eax
            //   8d45d8               | lea                 eax, [ebp - 0x28]
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_2 = { 8d8548fdffff c78548fdffff9c000000 50 ff15???????? }
            // n = 4, score = 100
            //   8d8548fdffff         | lea                 eax, [ebp - 0x2b8]
            //   c78548fdffff9c000000     | mov    dword ptr [ebp - 0x2b8], 0x9c
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_3 = { 50 e8???????? 6a01 8d85a0fcffff 68???????? 50 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a01                 | push                1
            //   8d85a0fcffff         | lea                 eax, [ebp - 0x360]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_4 = { 3c4d 7e04 3c5a 7e14 }
            // n = 4, score = 100
            //   3c4d                 | cmp                 al, 0x4d
            //   7e04                 | jle                 6
            //   3c5a                 | cmp                 al, 0x5a
            //   7e14                 | jle                 0x16

        $sequence_5 = { ff15???????? 32c0 eb12 ff75ec }
            // n = 4, score = 100
            //   ff15????????         |                     
            //   32c0                 | xor                 al, al
            //   eb12                 | jmp                 0x14
            //   ff75ec               | push                dword ptr [ebp - 0x14]

        $sequence_6 = { 0f8ea5010000 8d8d48ffffff 8945ec 894dfc }
            // n = 4, score = 100
            //   0f8ea5010000         | jle                 0x1ab
            //   8d8d48ffffff         | lea                 ecx, [ebp - 0xb8]
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   894dfc               | mov                 dword ptr [ebp - 4], ecx

        $sequence_7 = { 83c444 eb84 ff75fc 8b35???????? }
            // n = 4, score = 100
            //   83c444               | add                 esp, 0x44
            //   eb84                 | jmp                 0xffffff86
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   8b35????????         |                     

        $sequence_8 = { 53 50 c785ccfeffff01000000 66899dd0feffff 89bda0feffff }
            // n = 5, score = 100
            //   53                   | push                ebx
            //   50                   | push                eax
            //   c785ccfeffff01000000     | mov    dword ptr [ebp - 0x134], 1
            //   66899dd0feffff       | mov                 word ptr [ebp - 0x130], bx
            //   89bda0feffff         | mov                 dword ptr [ebp - 0x160], edi

        $sequence_9 = { c745e864000000 50 8d851cfeffff 50 ff15???????? }
            // n = 5, score = 100
            //   c745e864000000       | mov                 dword ptr [ebp - 0x18], 0x64
            //   50                   | push                eax
            //   8d851cfeffff         | lea                 eax, [ebp - 0x1e4]
            //   50                   | push                eax
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 49152
}
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