SYMBOLCOMMON_NAMEaka. SYNONYMS
win.poison_rat (Back to overview)

Poison RAT


There is no description at this point.

References
2014-07-02Trend MicroKervin Alintanahin, Ronnie Giagone
@online{alintanahin:20140702:kivars:4fe6877, author = {Kervin Alintanahin and Ronnie Giagone}, title = {{KIVARS With Venom: Targeted Attacks Upgrade with 64-bit “Support”}}, date = {2014-07-02}, organization = {Trend Micro}, url = {https://blog.trendmicro.com/trendlabs-security-intelligence/kivars-with-venom-targeted-attacks-upgrade-with-64-bit-support/}, language = {English}, urldate = {2020-06-19} } KIVARS With Venom: Targeted Attacks Upgrade with 64-bit “Support”
FakeWord KIVARS PLEAD Poison RAT Zeus
Yara Rules
[TLP:WHITE] win_poison_rat_auto (20221125 | Detects win.poison_rat.)
rule win_poison_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.poison_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.poison_rat"
        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 = { 81e3ff000000 c1e708 333c9d30944000 8b5804 33fb 8b5c2414 }
            // n = 6, score = 100
            //   81e3ff000000         | and                 ebx, 0xff
            //   c1e708               | shl                 edi, 8
            //   333c9d30944000       | xor                 edi, dword ptr [ebx*4 + 0x409430]
            //   8b5804               | mov                 ebx, dword ptr [eax + 4]
            //   33fb                 | xor                 edi, ebx
            //   8b5c2414             | mov                 ebx, dword ptr [esp + 0x14]

        $sequence_1 = { c1ef18 8b3cbd30984000 333cad309c4000 8b6c2418 c1ed08 81e5ff000000 }
            // n = 6, score = 100
            //   c1ef18               | shr                 edi, 0x18
            //   8b3cbd30984000       | mov                 edi, dword ptr [edi*4 + 0x409830]
            //   333cad309c4000       | xor                 edi, dword ptr [ebp*4 + 0x409c30]
            //   8b6c2418             | mov                 ebp, dword ptr [esp + 0x18]
            //   c1ed08               | shr                 ebp, 8
            //   81e5ff000000         | and                 ebp, 0xff

        $sequence_2 = { 8b3c9530a44000 8b500c 33ef 8b7c2414 33ea }
            // n = 5, score = 100
            //   8b3c9530a44000       | mov                 edi, dword ptr [edx*4 + 0x40a430]
            //   8b500c               | mov                 edx, dword ptr [eax + 0xc]
            //   33ef                 | xor                 ebp, edi
            //   8b7c2414             | mov                 edi, dword ptr [esp + 0x14]
            //   33ea                 | xor                 ebp, edx

        $sequence_3 = { c3 0fb6442404 8a4c240c 848841b44000 751c 837c240800 740e }
            // n = 7, score = 100
            //   c3                   | ret                 
            //   0fb6442404           | movzx               eax, byte ptr [esp + 4]
            //   8a4c240c             | mov                 cl, byte ptr [esp + 0xc]
            //   848841b44000         | test                byte ptr [eax + 0x40b441], cl
            //   751c                 | jne                 0x1e
            //   837c240800           | cmp                 dword ptr [esp + 8], 0
            //   740e                 | je                  0x10

        $sequence_4 = { 81e1ff000000 33ea 83c010 8b148d30a44000 83c010 33ea }
            // n = 6, score = 100
            //   81e1ff000000         | and                 ecx, 0xff
            //   33ea                 | xor                 ebp, edx
            //   83c010               | add                 eax, 0x10
            //   8b148d30a44000       | mov                 edx, dword ptr [ecx*4 + 0x40a430]
            //   83c010               | add                 eax, 0x10
            //   33ea                 | xor                 ebp, edx

        $sequence_5 = { 0bca 33d2 33cb 8a560e }
            // n = 4, score = 100
            //   0bca                 | or                  ecx, edx
            //   33d2                 | xor                 edx, edx
            //   33cb                 | xor                 ecx, ebx
            //   8a560e               | mov                 dl, byte ptr [esi + 0xe]

        $sequence_6 = { 33cd 8b2c95309c4000 8bd3 81e2ff000000 33cd 8b2c9530a44000 }
            // n = 6, score = 100
            //   33cd                 | xor                 ecx, ebp
            //   8b2c95309c4000       | mov                 ebp, dword ptr [edx*4 + 0x409c30]
            //   8bd3                 | mov                 edx, ebx
            //   81e2ff000000         | and                 edx, 0xff
            //   33cd                 | xor                 ecx, ebp
            //   8b2c9530a44000       | mov                 ebp, dword ptr [edx*4 + 0x40a430]

        $sequence_7 = { c1e908 331cad30a04000 8b6c2414 81e5ff000000 331cad30a44000 }
            // n = 5, score = 100
            //   c1e908               | shr                 ecx, 8
            //   331cad30a04000       | xor                 ebx, dword ptr [ebp*4 + 0x40a030]
            //   8b6c2414             | mov                 ebp, dword ptr [esp + 0x14]
            //   81e5ff000000         | and                 ebp, 0xff
            //   331cad30a44000       | xor                 ebx, dword ptr [ebp*4 + 0x40a430]

        $sequence_8 = { 8b7c2414 c1ef18 8b3cbd30984000 333cad309c4000 8b6c2418 }
            // n = 5, score = 100
            //   8b7c2414             | mov                 edi, dword ptr [esp + 0x14]
            //   c1ef18               | shr                 edi, 0x18
            //   8b3cbd30984000       | mov                 edi, dword ptr [edi*4 + 0x409830]
            //   333cad309c4000       | xor                 edi, dword ptr [ebp*4 + 0x409c30]
            //   8b6c2418             | mov                 ebp, dword ptr [esp + 0x18]

        $sequence_9 = { 330c9530a04000 8bd5 81e2ff000000 81e3ff000000 c1ed18 }
            // n = 5, score = 100
            //   330c9530a04000       | xor                 ecx, dword ptr [edx*4 + 0x40a030]
            //   8bd5                 | mov                 edx, ebp
            //   81e2ff000000         | and                 edx, 0xff
            //   81e3ff000000         | and                 ebx, 0xff
            //   c1ed18               | shr                 ebp, 0x18

    condition:
        7 of them and filesize < 101688
}
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