SYMBOLCOMMON_NAMEaka. SYNONYMS
win.starsypound (Back to overview)

StarsyPound

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_starsypound_auto (20220411 | Detects win.starsypound.)
rule win_starsypound_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.starsypound."
        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.starsypound"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 85c0 0f868d000000 8b5500 8d44240c }
            // n = 4, score = 100
            //   85c0                 | test                eax, eax
            //   0f868d000000         | jbe                 0x93
            //   8b5500               | mov                 edx, dword ptr [ebp]
            //   8d44240c             | lea                 eax, dword ptr [esp + 0xc]

        $sequence_1 = { 85c0 7444 8b5304 8d44240c 6a00 50 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   7444                 | je                  0x46
            //   8b5304               | mov                 edx, dword ptr [ebx + 4]
            //   8d44240c             | lea                 eax, dword ptr [esp + 0xc]
            //   6a00                 | push                0
            //   50                   | push                eax

        $sequence_2 = { 50 e8???????? 6689442416 8d442444 50 e8???????? }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   6689442416           | mov                 word ptr [esp + 0x16], ax
            //   8d442444             | lea                 eax, dword ptr [esp + 0x44]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_3 = { 83f8ff 75a2 e8???????? 5f 5e 5d }
            // n = 6, score = 100
            //   83f8ff               | cmp                 eax, -1
            //   75a2                 | jne                 0xffffffa4
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp

        $sequence_4 = { bf???????? f3ab 8b44240c 50 e8???????? 8b0d???????? }
            // n = 6, score = 100
            //   bf????????           |                     
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b44240c             | mov                 eax, dword ptr [esp + 0xc]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b0d????????         |                     

        $sequence_5 = { 52 e8???????? 83c418 83feff 0f84d9feffff b93f000000 }
            // n = 6, score = 100
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   83feff               | cmp                 esi, -1
            //   0f84d9feffff         | je                  0xfffffedf
            //   b93f000000           | mov                 ecx, 0x3f

        $sequence_6 = { 8d542410 68???????? 52 e8???????? 8d442424 56 }
            // n = 6, score = 100
            //   8d542410             | lea                 edx, dword ptr [esp + 0x10]
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     
            //   8d442424             | lea                 eax, dword ptr [esp + 0x24]
            //   56                   | push                esi

        $sequence_7 = { b94b000000 33c0 bf???????? f3ab 8b44240c 50 e8???????? }
            // n = 7, score = 100
            //   b94b000000           | mov                 ecx, 0x4b
            //   33c0                 | xor                 eax, eax
            //   bf????????           |                     
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b44240c             | mov                 eax, dword ptr [esp + 0xc]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_8 = { 8b450c 8d542420 51 52 50 e8???????? }
            // n = 6, score = 100
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8d542420             | lea                 edx, dword ptr [esp + 0x20]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_9 = { 51 e8???????? 56 8d542434 68???????? 52 e8???????? }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   e8????????           |                     
            //   56                   | push                esi
            //   8d542434             | lea                 edx, dword ptr [esp + 0x34]
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 40960
}
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