SYMBOLCOMMON_NAMEaka. SYNONYMS
win.ati_agent (Back to overview)

ATI-Agent

Actor(s): APT 29


There is no description at this point.

References
2016-06-15CrowdStrikeDmitri Alperovitch
@online{alperovitch:20160615:bears:604c1d9, author = {Dmitri Alperovitch}, title = {{Bears in the Midst: Intrusion into the Democratic National Committee}}, date = {2016-06-15}, organization = {CrowdStrike}, url = {https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/}, language = {English}, urldate = {2019-12-20} } Bears in the Midst: Intrusion into the Democratic National Committee
X-Agent ATI-Agent Downrage SEADADDY X-Agent XTunnel Sofacy
Yara Rules
[TLP:WHITE] win_ati_agent_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_ati_agent_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.ati_agent"
        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 = { 4885c0 7509 488d05bfb00000 eb04 4883c014 }
            // n = 5, score = 100
            //   4885c0               | jmp                 0x607
            //   7509                 | mov                 eax, dword ptr [ebx + 0xc]
            //   488d05bfb00000       | mov                 edx, edi
            //   eb04                 | dec                 esp
            //   4883c014             | lea                 eax, [0xffff8528]

        $sequence_1 = { b800020480 488b4c2438 4833cc e8???????? 4883c448 }
            // n = 5, score = 100
            //   b800020480           | mov                 ecx, esi
            //   488b4c2438           | dec                 eax
            //   4833cc               | mov                 ecx, dword ptr [esp + 0x510]
            //   e8????????           |                     
            //   4883c448             | dec                 eax

        $sequence_2 = { 488d0df5130000 ff15???????? 8905???????? 83f8ff 7448 }
            // n = 5, score = 100
            //   488d0df5130000       | mov                 dword ptr [esp + 0x60], eax
            //   ff15????????         |                     
            //   8905????????         |                     
            //   83f8ff               | dec                 eax
            //   7448                 | mov                 dword ptr [esp + 0x68], eax

        $sequence_3 = { 4c8bdf 488bcf 48c1f905 4183e31f 488d15e3fa0000 488b0cca 4d6bdb58 }
            // n = 7, score = 100
            //   4c8bdf               | dec                 eax
            //   488bcf               | test                eax, eax
            //   48c1f905             | je                  0x39a
            //   4183e31f             | sete                al
            //   488d15e3fa0000       | mov                 dword ptr [esp + 0x4c], eax
            //   488b0cca             | dec                 eax
            //   4d6bdb58             | lea                 eax, [0xc22e]

        $sequence_4 = { 6633c1 48ffc1 664123c0 6689844cee000000 4883f90a 72e2 }
            // n = 6, score = 100
            //   6633c1               | and                 eax, eax
            //   48ffc1               | mov                 word ptr [esp + ecx*2 + 0x6e], ax
            //   664123c0             | dec                 eax
            //   6689844cee000000     | cmp                 ecx, 0x3d
            //   4883f90a             | xor                 al, 0x2e
            //   72e2                 | xor                 ax, cx

        $sequence_5 = { 488d8520060000 448bc6 442bc0 488b442450 488d0d67bf0000 488b0cc1 }
            // n = 6, score = 100
            //   488d8520060000       | xor                 ecx, esp
            //   448bc6               | xor                 edi, edi
            //   442bc0               | mov                 ecx, edi
            //   488b442450           | inc                 ecx
            //   488d0d67bf0000       | mov                 eax, 0xff
            //   488b0cc1             | dec                 eax

        $sequence_6 = { 8a03 488d152dc00000 ffc7 4a8b0ce2 4188440f4c 4a8b04e2 41c744075001000000 }
            // n = 7, score = 100
            //   8a03                 | add                 ebx, 0x10
            //   488d152dc00000       | dec                 eax
            //   ffc7                 | dec                 esi
            //   4a8b0ce2             | jne                 0x2c4
            //   4188440f4c           | dec                 eax
            //   4a8b04e2             | lea                 ebx, [0x8fb3]
            //   41c744075001000000     | dec    eax

        $sequence_7 = { 420fb60402 32c1 fec1 3484 88441420 0fb6d1 }
            // n = 6, score = 100
            //   420fb60402           | je                  0x2f2
            //   32c1                 | dec                 eax
            //   fec1                 | lea                 ecx, [0xd6eb]
            //   3484                 | test                eax, eax
            //   88441420             | je                  0x172
            //   0fb6d1               | mov                 ecx, ebx

        $sequence_8 = { 664123c0 6689844cee000000 4883f90a 72e2 }
            // n = 4, score = 100
            //   664123c0             | dec                 eax
            //   6689844cee000000     | lea                 eax, [0xc14d]
            //   4883f90a             | dec                 eax
            //   72e2                 | cmp                 edi, eax

        $sequence_9 = { 6689444c4e 4883f90e 72e3 6644894c246c 488d442450 4c8d442440 4c8d4c2470 }
            // n = 7, score = 100
            //   6689444c4e           | and                 ebx, 0x1f
            //   4883f90e             | jae                 0x98e
            //   72e3                 | dec                 eax
            //   6644894c246c         | mov                 ebx, edi
            //   488d442450           | dec                 esp
            //   4c8d442440           | mov                 ebp, edi
            //   4c8d4c2470           | dec                 ecx

    condition:
        7 of them and filesize < 172032
}
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