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 (20201023 | autogenerated rule brought to you by yara-signator)
rule win_stabuniq_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.stabuniq"
        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 = { 50 8b4510 0579020000 50 }
            // n = 4, score = 100
            //   50                   | push                eax
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   0579020000           | add                 eax, 0x279
            //   50                   | push                eax

        $sequence_1 = { 50 8d85c0fcffff 50 6a00 6a00 8b4d10 ff91d4000000 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d85c0fcffff         | lea                 eax, [ebp - 0x340]
            //   50                   | push                eax
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   ff91d4000000         | call                dword ptr [ecx + 0xd4]

        $sequence_2 = { 8b8d6cf9ffff 83e940 51 8d956cfaffff 52 8b8568faffff }
            // n = 6, score = 100
            //   8b8d6cf9ffff         | mov                 ecx, dword ptr [ebp - 0x694]
            //   83e940               | sub                 ecx, 0x40
            //   51                   | push                ecx
            //   8d956cfaffff         | lea                 edx, [ebp - 0x594]
            //   52                   | push                edx
            //   8b8568faffff         | mov                 eax, dword ptr [ebp - 0x598]

        $sequence_3 = { 50 e8???????? 6a10 6a00 8d8d24fdffff 51 e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a10                 | push                0x10
            //   6a00                 | push                0
            //   8d8d24fdffff         | lea                 ecx, [ebp - 0x2dc]
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_4 = { 8b4d0c 8d9401b2170000 52 8d85f8fdffff 50 8b4d0c ff5130 }
            // n = 7, score = 100
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8d9401b2170000       | lea                 edx, [ecx + eax + 0x17b2]
            //   52                   | push                edx
            //   8d85f8fdffff         | lea                 eax, [ebp - 0x208]
            //   50                   | push                eax
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   ff5130               | call                dword ptr [ecx + 0x30]

        $sequence_5 = { 8b45f0 8b08 51 8b55f4 83ea04 8955f4 8b45f4 }
            // n = 7, score = 100
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   51                   | push                ecx
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]
            //   83ea04               | sub                 edx, 4
            //   8955f4               | mov                 dword ptr [ebp - 0xc], edx
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]

        $sequence_6 = { 8b5514 ff524c 50 8b4514 05ab0e0000 50 e8???????? }
            // n = 7, score = 100
            //   8b5514               | mov                 edx, dword ptr [ebp + 0x14]
            //   ff524c               | call                dword ptr [edx + 0x4c]
            //   50                   | push                eax
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   05ab0e0000           | add                 eax, 0xeab
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_7 = { 50 8b4d08 83c120 51 8b5510 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   83c120               | add                 ecx, 0x20
            //   51                   | push                ecx
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]

        $sequence_8 = { 7513 8b5520 8b820c020000 50 8b4d20 ff91a8000000 8b5520 }
            // n = 7, score = 100
            //   7513                 | jne                 0x15
            //   8b5520               | mov                 edx, dword ptr [ebp + 0x20]
            //   8b820c020000         | mov                 eax, dword ptr [edx + 0x20c]
            //   50                   | push                eax
            //   8b4d20               | mov                 ecx, dword ptr [ebp + 0x20]
            //   ff91a8000000         | call                dword ptr [ecx + 0xa8]
            //   8b5520               | mov                 edx, dword ptr [ebp + 0x20]

        $sequence_9 = { 05ab0e0000 50 8b4df4 51 8b550c ff522c }
            // n = 6, score = 100
            //   05ab0e0000           | add                 eax, 0xeab
            //   50                   | push                eax
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   51                   | push                ecx
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   ff522c               | call                dword ptr [edx + 0x2c]

    condition:
        7 of them and filesize < 57344
}
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