Analysis
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max time kernel
141s -
max time network
128s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
29-06-2024 16:35
Static task
static1
Behavioral task
behavioral1
Sample
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe
Resource
win11-20240419-en
General
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Target
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe
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Size
5.2MB
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MD5
a2b83e958887f54c79bc41ea4c8dd270
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SHA1
0cf07634b974fc6a02dbb7928a19fe90417398c2
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SHA256
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792
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SHA512
cd1182678fc8fef1103c0c9604f246f44a110f7990f3ba372c9a1566f6ec50c164935f61652a2dc17728d57680f51cd283c59ec53df51a178b08ba75bb3bc3c4
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SSDEEP
98304:CW/MkDadro9uikcBbAtUHcEybl5cxPoniYJ1LRExYz2qMjR24YCSQx9W:z6Zo4zcRSNbcB4tz2qMl2NCSQa
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/4664-88-0x0000000000B80000-0x0000000000C22000-memory.dmp family_socks5systemz behavioral2/memory/4664-113-0x0000000000B80000-0x0000000000C22000-memory.dmp family_socks5systemz behavioral2/memory/4664-112-0x0000000000B80000-0x0000000000C22000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmpvkfreeaudiosaver32_64.exevkfreeaudiosaver32_64.exepid process 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp 2664 vkfreeaudiosaver32_64.exe 4664 vkfreeaudiosaver32_64.exe -
Loads dropped DLL 1 IoCs
Processes:
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmppid process 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 91.211.247.248 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmppid process 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exeb8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmpdescription pid process target process PID 2684 wrote to memory of 3932 2684 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp PID 2684 wrote to memory of 3932 2684 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp PID 2684 wrote to memory of 3932 2684 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp PID 3932 wrote to memory of 2664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe PID 3932 wrote to memory of 2664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe PID 3932 wrote to memory of 2664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe PID 3932 wrote to memory of 4664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe PID 3932 wrote to memory of 4664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe PID 3932 wrote to memory of 4664 3932 b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp vkfreeaudiosaver32_64.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe"C:\Users\Admin\AppData\Local\Temp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-2CSL2.tmp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp"C:\Users\Admin\AppData\Local\Temp\is-2CSL2.tmp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmp" /SL5="$50070,5184047,54272,C:\Users\Admin\AppData\Local\Temp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -s3⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-2CSL2.tmp\b8c7a3b3b6471414de5c0b59b4eec0cb65df6c869b596b99aa233ed2d02cf792.tmpFilesize
680KB
MD570295416713c0ce535665d806e3d54ac
SHA1fe13c334ec67412f41fe190f93da7d45a57eccbd
SHA256958c5f807a8268b09828e0f02a6c75a92f3a87dbd1853eb62e5996db990ba2ba
SHA5122336597fb6ffe697ba62cd931479108556fee44319176989f961ae43aea62b111df6870a169202c6d960aface42779a2f82db48a69fe2072b711a512812f925c
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C:\Users\Admin\AppData\Local\Temp\is-92VEP.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exeFilesize
3.7MB
MD538289fa095a635a74d141219dd611877
SHA1bb36afedf79878d83a833d06993c7359c9819292
SHA256b1140969338e4f120617971973eadce0a1b85ac9c5a747ac8cfe82b0e1994ea3
SHA512003aebd7b0649070a3e2f71b52b3a9e0498bd2592b8e783fb9681d3d19064cb7f1a183b3f1cc2ac46d461db3ce991eee6196119ab56500c43de4d97a3a797d92
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memory/2664-59-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/2664-60-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/2664-65-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/2664-64-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/2684-70-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/2684-3-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/2684-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3932-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3932-71-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/4664-76-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-91-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-72-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-75-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-67-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-79-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-82-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-85-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-88-0x0000000000B80000-0x0000000000C22000-memory.dmpFilesize
648KB
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memory/4664-69-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-96-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-99-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-102-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-105-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-108-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-111-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-113-0x0000000000B80000-0x0000000000C22000-memory.dmpFilesize
648KB
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memory/4664-112-0x0000000000B80000-0x0000000000C22000-memory.dmpFilesize
648KB
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memory/4664-117-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB
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memory/4664-120-0x0000000000400000-0x00000000007B5000-memory.dmpFilesize
3.7MB