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Analysis
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max time kernel
115s -
max time network
122s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
21/01/2025, 12:09
General
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Target
a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.exe
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Size
208KB
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MD5
efe92c3be8c2519593474dedd7726500
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SHA1
4784cebb3a906ee25f4ac5d07ad51c5a559df13c
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SHA256
a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09
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SHA512
5249d08850ad07c3e785a91799b265235646f0a6d7c2a4ee071e85d286815d94968b3b8a9063b0e572793c41e2a4ad5b3a19135a74fc1c2b78c7aa222817fbe9
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SSDEEP
6144:Ua1oB/yvpK0JCmRcRRR8N0e2kXfCqNidkfkw:UbapK0JCmRcU9vVokfD
Malware Config
Extracted
simda
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dga
gatyfus.com
lyvyxor.com
vojyqem.com
qetyfuv.com
puvyxil.com
gahyqah.com
lyryfyd.com
vocyzit.com
qegyqaq.com
purydyv.com
gacyzuz.com
lygymoj.com
vowydef.com
qexylup.com
pufymoq.com
gaqydeb.com
lyxylux.com
vofymik.com
qeqysag.com
puzylyp.com
gadyniw.com
lymysan.com
volykyc.com
qedynul.com
pumypog.com
galykes.com
lysynur.com
vonypom.com
qekykev.com
pupybul.com
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
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Simda family
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simda
Simda is an infostealer written in C++.
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Executes dropped EXE 1 IoCs
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Modifies WinLogon 2 TTPs 2 IoCs
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Drops file in Windows directory 2 IoCs
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious behavior: RenamesItself 1 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.exe"C:\Users\Admin\AppData\Local\Temp\a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.exe"1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
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C:\Windows\apppatch\svchost.exe"C:\Windows\apppatch\svchost.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
481B
MD5ec078463ebd02918ce13acbc84d63757
SHA193fdfdb0c5a041ea4b4352e290e6f1669b58d2cf
SHA256ab7f61e83f1685a9c52a74f06090416929856e0240ff4372ece2921b61fedd39
SHA512752ee8c7faac98edff6388e30b2a6681b7d7ea7eb0c0665be5122c4f6fc782f2f42eae77aa28bbf9aa673bcd0acf344d56b6e032135fa516eeae49628f9aef82
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Filesize
208KB
MD57b124fa1e2b8eb44a45bfb1ad53e6bd7
SHA1f3f66b1b6765f0cef3f3eec0ef4432cf690be8bb
SHA256853561ee96548db6ef1be1cddc689067ca5ddd6b8deb4b2f631cf823b5f087ca
SHA51234c359ae9727fc679065ab91ab63d0e4f9418cf8f5d81d0eaa4f468f7a67aa72009ba0132564f01889fd4379b17e4ceb45a3920166ae0d8ccd409c1808a42427
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Filesize
12KB
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Filesize
380KB
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Filesize
412KB
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Filesize
380KB
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Filesize
12KB
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Filesize
412KB
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Filesize
412KB
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Filesize
412KB
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Filesize
672KB
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Filesize
728KB
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728KB
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728KB
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728KB