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 (20221125 | Detects win.sysget.)
rule win_sysget_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.sysget."
        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.sysget"
        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 = { 8906 ff15???????? 8945fc 3bc7 74dc 57 }
            // n = 6, score = 400
            //   8906                 | mov                 dword ptr [esi], eax
            //   ff15????????         |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   3bc7                 | cmp                 eax, edi
            //   74dc                 | je                  0xffffffde
            //   57                   | push                edi

        $sequence_1 = { 50 66a5 e8???????? 83c428 6800800000 53 ffb5c4f9ffff }
            // n = 7, score = 400
            //   50                   | push                eax
            //   66a5                 | movsw               word ptr es:[edi], word ptr [esi]
            //   e8????????           |                     
            //   83c428               | add                 esp, 0x28
            //   6800800000           | push                0x8000
            //   53                   | push                ebx
            //   ffb5c4f9ffff         | push                dword ptr [ebp - 0x63c]

        $sequence_2 = { eb00 58 50 33c0 33c0 }
            // n = 5, score = 400
            //   eb00                 | jmp                 2
            //   58                   | pop                 eax
            //   50                   | push                eax
            //   33c0                 | xor                 eax, eax
            //   33c0                 | xor                 eax, eax

        $sequence_3 = { e8???????? 59 59 6a00 6a07 57 6a00 }
            // n = 7, score = 400
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   6a00                 | push                0
            //   6a07                 | push                7
            //   57                   | push                edi
            //   6a00                 | push                0

        $sequence_4 = { 668985ecf1ffff 8d85eef1ffff 57 50 89bde4f1ffff }
            // n = 5, score = 400
            //   668985ecf1ffff       | mov                 word ptr [ebp - 0xe14], ax
            //   8d85eef1ffff         | lea                 eax, [ebp - 0xe12]
            //   57                   | push                edi
            //   50                   | push                eax
            //   89bde4f1ffff         | mov                 dword ptr [ebp - 0xe1c], edi

        $sequence_5 = { ff750c 53 53 53 53 50 ff15???????? }
            // n = 7, score = 400
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_6 = { 6aff 57 53 53 ffd6 682b010000 8d85d5fdffff }
            // n = 7, score = 400
            //   6aff                 | push                -1
            //   57                   | push                edi
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   ffd6                 | call                esi
            //   682b010000           | push                0x12b
            //   8d85d5fdffff         | lea                 eax, [ebp - 0x22b]

        $sequence_7 = { 50 899dccf9ffff 899dd0f9ffff e8???????? 8b85d0f9ffff 83c032 50 }
            // n = 7, score = 400
            //   50                   | push                eax
            //   899dccf9ffff         | mov                 dword ptr [ebp - 0x634], ebx
            //   899dd0f9ffff         | mov                 dword ptr [ebp - 0x630], ebx
            //   e8????????           |                     
            //   8b85d0f9ffff         | mov                 eax, dword ptr [ebp - 0x630]
            //   83c032               | add                 eax, 0x32
            //   50                   | push                eax

        $sequence_8 = { 8d8decfdffff 03da 668901 0fb703 03ca 83f80a 75f1 }
            // n = 7, score = 400
            //   8d8decfdffff         | lea                 ecx, [ebp - 0x214]
            //   03da                 | add                 ebx, edx
            //   668901               | mov                 word ptr [ecx], ax
            //   0fb703               | movzx               eax, word ptr [ebx]
            //   03ca                 | add                 ecx, edx
            //   83f80a               | cmp                 eax, 0xa
            //   75f1                 | jne                 0xfffffff3

        $sequence_9 = { e8???????? 59 59 3bc7 0f84ae000000 be???????? 56 }
            // n = 7, score = 400
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   3bc7                 | cmp                 eax, edi
            //   0f84ae000000         | je                  0xb4
            //   be????????           |                     
            //   56                   | push                esi

    condition:
        7 of them and filesize < 352256
}
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