Analysis
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max time kernel
141s -
max time network
130s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-06-2024 11:00
Static task
static1
Behavioral task
behavioral1
Sample
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral2
Sample
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe
Resource
win11-20240508-en
General
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Target
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe
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Size
5.1MB
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MD5
4584680ce9e3bb07abc9d9a2d98f3e26
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SHA1
f3581d85e23cc05c9cd537f9fc9ab6ca545542e0
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SHA256
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c
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SHA512
30081900f80201343fe6e7483f476f8a07aeb199876b638233771506e0b86e3f7a67c1666a31269a917e8d86e73d16fcbf75f81ac977af3614216e5568ab756a
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SSDEEP
98304:mm5QI3YlVxyxtzu6ygm5QElnnxFlvsqcliAblMq0A4yLxt+QDk5RXwMTW5RBEp:RpY4r9m7Zxrv00AtVg+6
Malware Config
Extracted
socks5systemz
csfuchp.net
http://csfuchp.net/search/?q=67e28dd86f59a17b435afa187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff612c1ec969833
http://csfuchp.net/search/?q=67e28dd86f59a17b435afa187c27d78406abdd88be4b12eab517aa5c96bd86ec958349865a8bbc896c58e713bc90c91a36b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c993ace6c941e
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/276-88-0x0000000000A90000-0x0000000000B32000-memory.dmp family_socks5systemz behavioral2/memory/276-112-0x0000000000A90000-0x0000000000B32000-memory.dmp family_socks5systemz behavioral2/memory/276-113-0x0000000000A90000-0x0000000000B32000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmpmp3ripfreeedition32.exemp3ripfreeedition32.exepid process 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp 568 mp3ripfreeedition32.exe 276 mp3ripfreeedition32.exe -
Loads dropped DLL 1 IoCs
Processes:
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmppid process 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.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 141.98.234.31 -
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:
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmppid process 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exefb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmpdescription pid process target process PID 744 wrote to memory of 400 744 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp PID 744 wrote to memory of 400 744 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp PID 744 wrote to memory of 400 744 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp PID 400 wrote to memory of 568 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe PID 400 wrote to memory of 568 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe PID 400 wrote to memory of 568 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe PID 400 wrote to memory of 276 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe PID 400 wrote to memory of 276 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe PID 400 wrote to memory of 276 400 fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp mp3ripfreeedition32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe"C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:744 -
C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp"C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp" /SL5="$800D8,5091457,54272,C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe"C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -i3⤵
- Executes dropped EXE
PID:568
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C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe"C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -s3⤵
- Executes dropped EXE
PID:276
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD5c1d017d322f193865efe2f5b40b7fadb
SHA11de5b69a2cd1ede32aa272925b37f6c402b4b258
SHA256823f7870250ec1da98363b84d6005e39dcd76fdbb1cbac7f1afa6233347535fe
SHA51272269dd9ae863b2324047624aec216e6dbecaf5fc28b40bf5c7a165fde5abc36b46b80725bb6e2b25077994c1636dc75d235ac3d38dbb9e88f2bc1a3300098ff
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp
Filesize680KB
MD532d424af04d29f2313b999c29b0f74e0
SHA19b2bc33ee273592fd2fc562f4a6e2b8e9fa9843e
SHA256cb5e4eaff4b283ccfe18095f3d22d100b9816a195295e69d7dd291d03cc6cee9
SHA512ea0eb300cc439053d42143c8f5bf32fecbb31dedb811857cdd33c43668696e4f1daa0d57350c8b75f8792c5bd930634e8aa78cce8921605ccb878811c168cecd