SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sysget (Back to overview)

SysGet

Actor(s): DragonOK


There is no description at this point.

References
2017-01-05Palo Alto Networks Unit 42Josh Grunzweig
@online{grunzweig:20170105:dragonok:f5f73f6, author = {Josh Grunzweig}, title = {{DragonOK Updates Toolset and Targets Multiple Geographic Regions}}, date = {2017-01-05}, organization = {Palo Alto Networks Unit 42}, url = {http://researchcenter.paloaltonetworks.com/2017/01/unit42-dragonok-updates-toolset-targets-multiple-geographic-regions/}, language = {English}, urldate = {2019-12-20} } DragonOK Updates Toolset and Targets Multiple Geographic Regions
IsSpace SysGet
2014FireEyeFireEye
@techreport{fireeye:2014:operation:2160679, author = {FireEye}, title = {{Operation Quantum Entanglement}}, date = {2014}, institution = {FireEye}, url = {http://csecybsec.com/download/zlab/20180713_CSE_APT28_X-Agent_Op-Roman%20Holiday-Report_v6_1.pdf}, language = {English}, urldate = {2021-04-29} } Operation Quantum Entanglement
IsSpace NewCT Poison Ivy SysGet
Yara Rules
[TLP:WHITE] win_sysget_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_sysget_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.sysget"
        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 = { 83e103 50 f3a4 e8???????? 8b8d88f7ffff 8d85ecfdffff 83c40c }
            // n = 7, score = 400
            //   83e103               | and                 ecx, 3
            //   50                   | push                eax
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   e8????????           |                     
            //   8b8d88f7ffff         | mov                 ecx, dword ptr [ebp - 0x878]
            //   8d85ecfdffff         | lea                 eax, [ebp - 0x214]
            //   83c40c               | add                 esp, 0xc

        $sequence_1 = { 59 6a7c 8d4580 53 }
            // n = 4, score = 400
            //   59                   | pop                 ecx
            //   6a7c                 | push                0x7c
            //   8d4580               | lea                 eax, [ebp - 0x80]
            //   53                   | push                ebx

        $sequence_2 = { 50 66a5 e8???????? 6a09 59 be???????? }
            // n = 6, score = 400
            //   50                   | push                eax
            //   66a5                 | movsw               word ptr es:[edi], word ptr [esi]
            //   e8????????           |                     
            //   6a09                 | push                9
            //   59                   | pop                 ecx
            //   be????????           |                     

        $sequence_3 = { e8???????? ffb5e4f1ffff ffb5dcf1ffff 53 e8???????? ffb5dcf1ffff }
            // n = 6, score = 400
            //   e8????????           |                     
            //   ffb5e4f1ffff         | push                dword ptr [ebp - 0xe1c]
            //   ffb5dcf1ffff         | push                dword ptr [ebp - 0xe24]
            //   53                   | push                ebx
            //   e8????????           |                     
            //   ffb5dcf1ffff         | push                dword ptr [ebp - 0xe24]

        $sequence_4 = { 83e103 f3a4 8dbde4fbffff 83ef02 668b4702 }
            // n = 5, score = 400
            //   83e103               | and                 ecx, 3
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8dbde4fbffff         | lea                 edi, [ebp - 0x41c]
            //   83ef02               | sub                 edi, 2
            //   668b4702             | mov                 ax, word ptr [edi + 2]

        $sequence_5 = { 6a2a 8d8552ffffff 6a00 50 66a5 e8???????? 6a09 }
            // n = 7, score = 400
            //   6a2a                 | push                0x2a
            //   8d8552ffffff         | lea                 eax, [ebp - 0xae]
            //   6a00                 | push                0
            //   50                   | push                eax
            //   66a5                 | movsw               word ptr es:[edi], word ptr [esi]
            //   e8????????           |                     
            //   6a09                 | push                9

        $sequence_6 = { 8b5d10 85db 0f8fce000000 8bbd88f7ffff 8b450c 8bd7 2bd0 }
            // n = 7, score = 400
            //   8b5d10               | mov                 ebx, dword ptr [ebp + 0x10]
            //   85db                 | test                ebx, ebx
            //   0f8fce000000         | jg                  0xd4
            //   8bbd88f7ffff         | mov                 edi, dword ptr [ebp - 0x878]
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8bd7                 | mov                 edx, edi
            //   2bd0                 | sub                 edx, eax

        $sequence_7 = { 85c0 75a7 ff15???????? ebcb }
            // n = 4, score = 400
            //   85c0                 | test                eax, eax
            //   75a7                 | jne                 0xffffffa9
            //   ff15????????         |                     
            //   ebcb                 | jmp                 0xffffffcd

        $sequence_8 = { 750d 8d85fcf7ffff 50 e8???????? }
            // n = 4, score = 400
            //   750d                 | jne                 0xf
            //   8d85fcf7ffff         | lea                 eax, [ebp - 0x804]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_9 = { 4a 75f9 5d c3 }
            // n = 4, score = 400
            //   4a                   | dec                 edx
            //   75f9                 | jne                 0xfffffffb
            //   5d                   | pop                 ebp
            //   c3                   | ret                 

    condition:
        7 of them and filesize < 352256
}
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