SYMBOLCOMMON_NAMEaka. SYNONYMS
win.stabuniq (Back to overview)

Stabuniq


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References
2012-12-24Contagiodump BlogMila Parkour
@online{parkour:20121224:dec:c19ac14, author = {Mila Parkour}, title = {{Dec. 2012 Trojan.Stabuniq samples - financial infostealer trojan}}, date = {2012-12-24}, organization = {Contagiodump Blog}, url = {http://contagiodump.blogspot.com/2012/12/dec-2012-trojanstabuniq-samples.html}, language = {English}, urldate = {2019-12-20} } Dec. 2012 Trojan.Stabuniq samples - financial infostealer trojan
Stabuniq
2012-12-20SymantecFred Gutierrez
@online{gutierrez:20121220:trojanstabuniq:3e7b380, author = {Fred Gutierrez}, title = {{Trojan.Stabuniq Found on Financial Institution Servers}}, date = {2012-12-20}, organization = {Symantec}, url = {https://www.symantec.com/connect/blogs/trojanstabuniq-found-financial-institution-servers}, language = {English}, urldate = {2020-01-10} } Trojan.Stabuniq Found on Financial Institution Servers
Stabuniq
Yara Rules
[TLP:WHITE] win_stabuniq_auto (20221125 | Detects win.stabuniq.)
rule win_stabuniq_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.stabuniq."
        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.stabuniq"
        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 = { 752b 8b4510 50 6a00 8d8dc0fcffff }
            // n = 5, score = 100
            //   752b                 | jne                 0x2d
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   50                   | push                eax
            //   6a00                 | push                0
            //   8d8dc0fcffff         | lea                 ecx, [ebp - 0x340]

        $sequence_1 = { 8b45f8 50 8b4d0c ff9178010000 8945f8 837df800 7507 }
            // n = 7, score = 100
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   50                   | push                eax
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   ff9178010000         | call                dword ptr [ecx + 0x178]
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   837df800             | cmp                 dword ptr [ebp - 8], 0
            //   7507                 | jne                 9

        $sequence_2 = { 8b4d08 8b91ec000000 52 8b4508 }
            // n = 4, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b91ec000000         | mov                 edx, dword ptr [ecx + 0xec]
            //   52                   | push                edx
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]

        $sequence_3 = { 8b450c 50 8b4d14 51 8b5520 81c2d10f0000 }
            // n = 6, score = 100
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   50                   | push                eax
            //   8b4d14               | mov                 ecx, dword ptr [ebp + 0x14]
            //   51                   | push                ecx
            //   8b5520               | mov                 edx, dword ptr [ebp + 0x20]
            //   81c2d10f0000         | add                 edx, 0xfd1

        $sequence_4 = { 8b4dec 51 8b5508 ff522c 8b45f0 8b08 51 }
            // n = 7, score = 100
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   51                   | push                ecx
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   ff522c               | call                dword ptr [edx + 0x2c]
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   51                   | push                ecx

        $sequence_5 = { 8b8d6cf9ffff 83e940 51 8b9528f9ffff 52 8d856cfaffff 50 }
            // n = 7, score = 100
            //   8b8d6cf9ffff         | mov                 ecx, dword ptr [ebp - 0x694]
            //   83e940               | sub                 ecx, 0x40
            //   51                   | push                ecx
            //   8b9528f9ffff         | mov                 edx, dword ptr [ebp - 0x6d8]
            //   52                   | push                edx
            //   8d856cfaffff         | lea                 eax, [ebp - 0x594]
            //   50                   | push                eax

        $sequence_6 = { c745a000000000 6a00 6a00 8b4dec 51 8b55e8 52 }
            // n = 7, score = 100
            //   c745a000000000       | mov                 dword ptr [ebp - 0x60], 0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   51                   | push                ecx
            //   8b55e8               | mov                 edx, dword ptr [ebp - 0x18]
            //   52                   | push                edx

        $sequence_7 = { 55 8bec 81ec14020000 8b451c 0fbe08 85c9 }
            // n = 6, score = 100
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   81ec14020000         | sub                 esp, 0x214
            //   8b451c               | mov                 eax, dword ptr [ebp + 0x1c]
            //   0fbe08               | movsx               ecx, byte ptr [eax]
            //   85c9                 | test                ecx, ecx

        $sequence_8 = { 8b4d08 c78138020000db3d4000 8b5508 8b8238020000 8b4d08 }
            // n = 5, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   c78138020000db3d4000     | mov    dword ptr [ecx + 0x238], 0x403ddb
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   8b8238020000         | mov                 eax, dword ptr [edx + 0x238]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_9 = { 51 8b95c8fbffff 52 e8???????? 8b85c8fbffff 0385d0fbffff 8985c8fbffff }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   8b95c8fbffff         | mov                 edx, dword ptr [ebp - 0x438]
            //   52                   | push                edx
            //   e8????????           |                     
            //   8b85c8fbffff         | mov                 eax, dword ptr [ebp - 0x438]
            //   0385d0fbffff         | add                 eax, dword ptr [ebp - 0x430]
            //   8985c8fbffff         | mov                 dword ptr [ebp - 0x438], eax

    condition:
        7 of them and filesize < 57344
}
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