SYMBOLCOMMON_NAMEaka. SYNONYMS
win.komprogo (Back to overview)

KOMPROGO

aka: Splinter RAT

Actor(s): APT32


KOMPROGO is a signature backdoor used by APT32 that is capable of process, file, and registry management, Creating a reverse shell, running WMI queries, retrieving information about the infected system.

References
2018-11-02CylanceCylance
@techreport{cylance:20181102:spyrats:67888b3, author = {Cylance}, title = {{The SpyRATs of OceanLotus}}, date = {2018-11-02}, institution = {Cylance}, url = {https://www.cylance.com/content/dam/cylance-web/en-us/resources/knowledge-center/resource-library/reports/SpyRATsofOceanLotusMalwareWhitePaper.pdf}, language = {English}, urldate = {2020-01-10} } The SpyRATs of OceanLotus
KOMPROGO PHOREAL
2017-05-14FireEyeNick Carr
@online{carr:20170514:cyber:0ac720f, author = {Nick Carr}, title = {{Cyber Espionage is Alive and Well: APT32 and the Threat to Global Corporations}}, date = {2017-05-14}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2017/05/cyber-espionage-apt32.html}, language = {English}, urldate = {2019-12-20} } Cyber Espionage is Alive and Well: APT32 and the Threat to Global Corporations
OceanLotus Cuegoe KOMPROGO SOUNDBITE APT32
2017FireEyeBart Inglot, Byrne Ghavalas
@online{inglot:2017:attacker:3af6c23, author = {Bart Inglot and Byrne Ghavalas}, title = {{ATTACKER ANTICS: Illustrations of Ingenuity}}, date = {2017}, organization = {FireEye}, url = {https://ruxcon.org.au/assets/2017/slides/bart-RuxCon-Presentation.pptx}, language = {English}, urldate = {2020-01-08} } ATTACKER ANTICS: Illustrations of Ingenuity
KOMPROGO SOUNDBITE
2015-12-08SymantecSymantec
@online{symantec:20151208:backdoorkomprogo:786eb9b, author = {Symantec}, title = {{Backdoor.Komprogo}}, date = {2015-12-08}, organization = {Symantec}, url = {https://www.symantec.com/security_response/earthlink_writeup.jsp?docid=2015-120808-5327-99}, language = {English}, urldate = {2019-11-27} } Backdoor.Komprogo
KOMPROGO
Yara Rules
[TLP:WHITE] win_komprogo_auto (20201014 | autogenerated rule brought to you by yara-signator)
rule win_komprogo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.komprogo"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 33c0 e9???????? 8975e4 33c0 39b8c0a94200 0f8491000000 }
            // n = 6, score = 100
            //   33c0                 | xor                 eax, eax
            //   e9????????           |                     
            //   8975e4               | mov                 dword ptr [ebp - 0x1c], esi
            //   33c0                 | xor                 eax, eax
            //   39b8c0a94200         | cmp                 dword ptr [eax + 0x42a9c0], edi
            //   0f8491000000         | je                  0x97

        $sequence_1 = { 8d960dd30000 89965cc40300 8d864ce70300 898620e90300 8d8e18ea0300 898e2cdf0200 898640e90300 }
            // n = 7, score = 100
            //   8d960dd30000         | lea                 edx, [esi + 0xd30d]
            //   89965cc40300         | mov                 dword ptr [esi + 0x3c45c], edx
            //   8d864ce70300         | lea                 eax, [esi + 0x3e74c]
            //   898620e90300         | mov                 dword ptr [esi + 0x3e920], eax
            //   8d8e18ea0300         | lea                 ecx, [esi + 0x3ea18]
            //   898e2cdf0200         | mov                 dword ptr [esi + 0x2df2c], ecx
            //   898640e90300         | mov                 dword ptr [esi + 0x3e940], eax

        $sequence_2 = { 89861e180100 8d8e08ae0300 898e28ae0300 8d8e7c710300 51 8b4dfc 8d86bcd20300 }
            // n = 7, score = 100
            //   89861e180100         | mov                 dword ptr [esi + 0x1181e], eax
            //   8d8e08ae0300         | lea                 ecx, [esi + 0x3ae08]
            //   898e28ae0300         | mov                 dword ptr [esi + 0x3ae28], ecx
            //   8d8e7c710300         | lea                 ecx, [esi + 0x3717c]
            //   51                   | push                ecx
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   8d86bcd20300         | lea                 eax, [esi + 0x3d2bc]

        $sequence_3 = { 8bcb 89be982a0000 e8???????? 83c404 }
            // n = 4, score = 100
            //   8bcb                 | mov                 ecx, ebx
            //   89be982a0000         | mov                 dword ptr [esi + 0x2a98], edi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_4 = { 898615130300 8d8e80e90300 898e21130300 898658140300 }
            // n = 4, score = 100
            //   898615130300         | mov                 dword ptr [esi + 0x31315], eax
            //   8d8e80e90300         | lea                 ecx, [esi + 0x3e980]
            //   898e21130300         | mov                 dword ptr [esi + 0x31321], ecx
            //   898658140300         | mov                 dword ptr [esi + 0x31458], eax

        $sequence_5 = { 898684b80300 8d8eccab0300 898edcab0300 8d96905c0300 8996fcab0300 8d86f8ab0300 898610ac0300 }
            // n = 7, score = 100
            //   898684b80300         | mov                 dword ptr [esi + 0x3b884], eax
            //   8d8eccab0300         | lea                 ecx, [esi + 0x3abcc]
            //   898edcab0300         | mov                 dword ptr [esi + 0x3abdc], ecx
            //   8d96905c0300         | lea                 edx, [esi + 0x35c90]
            //   8996fcab0300         | mov                 dword ptr [esi + 0x3abfc], edx
            //   8d86f8ab0300         | lea                 eax, [esi + 0x3abf8]
            //   898610ac0300         | mov                 dword ptr [esi + 0x3ac10], eax

        $sequence_6 = { 8996b4830300 8d966c840300 8996bfdc0200 8d9668ee0300 89965f2f0300 8d963c710300 89be992f0300 }
            // n = 7, score = 100
            //   8996b4830300         | mov                 dword ptr [esi + 0x383b4], edx
            //   8d966c840300         | lea                 edx, [esi + 0x3846c]
            //   8996bfdc0200         | mov                 dword ptr [esi + 0x2dcbf], edx
            //   8d9668ee0300         | lea                 edx, [esi + 0x3ee68]
            //   89965f2f0300         | mov                 dword ptr [esi + 0x32f5f], edx
            //   8d963c710300         | lea                 edx, [esi + 0x3713c]
            //   89be992f0300         | mov                 dword ptr [esi + 0x32f99], edi

        $sequence_7 = { bf???????? 8d5802 8bff 57 ff15???????? 4b 8d7c0701 }
            // n = 7, score = 100
            //   bf????????           |                     
            //   8d5802               | lea                 ebx, [eax + 2]
            //   8bff                 | mov                 edi, edi
            //   57                   | push                edi
            //   ff15????????         |                     
            //   4b                   | dec                 ebx
            //   8d7c0701             | lea                 edi, [edi + eax + 1]

        $sequence_8 = { 898e28320200 8d964ff20100 8d86b0840300 8d8e38700300 89962c320200 898698ec0300 }
            // n = 6, score = 100
            //   898e28320200         | mov                 dword ptr [esi + 0x23228], ecx
            //   8d964ff20100         | lea                 edx, [esi + 0x1f24f]
            //   8d86b0840300         | lea                 eax, [esi + 0x384b0]
            //   8d8e38700300         | lea                 ecx, [esi + 0x37038]
            //   89962c320200         | mov                 dword ptr [esi + 0x2322c], edx
            //   898698ec0300         | mov                 dword ptr [esi + 0x3ec98], eax

        $sequence_9 = { 8d8eb0700300 898ef0830200 898614be0000 8986f1be0000 8986d1bf0000 8d8ee15c0300 898e36c00000 }
            // n = 7, score = 100
            //   8d8eb0700300         | lea                 ecx, [esi + 0x370b0]
            //   898ef0830200         | mov                 dword ptr [esi + 0x283f0], ecx
            //   898614be0000         | mov                 dword ptr [esi + 0xbe14], eax
            //   8986f1be0000         | mov                 dword ptr [esi + 0xbef1], eax
            //   8986d1bf0000         | mov                 dword ptr [esi + 0xbfd1], eax
            //   8d8ee15c0300         | lea                 ecx, [esi + 0x35ce1]
            //   898e36c00000         | mov                 dword ptr [esi + 0xc036], ecx

    condition:
        7 of them and filesize < 1045504
}
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