Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
05/02/2025, 03:30
General
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Target
b81f85a622e2a251f8b9207f9fabc1c0fe3f7946feee047bb7aafef7a9c89d4b.exe
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Size
218KB
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MD5
451d415999e3ff20939437223dd858f2
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SHA1
1317e9f20a1f43462c6eca78394ec2db562ebdfe
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SHA256
b81f85a622e2a251f8b9207f9fabc1c0fe3f7946feee047bb7aafef7a9c89d4b
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SHA512
23d7a8a3de57e2f499afd1897aa07cbee2b0c42fde19aa30e9c87625c3fe31caa4377f39cb09c16e014ba87843b2bdffc6a951a945f1ba704858b540e886d84a
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SSDEEP
3072:hvm4SZsQrNzPrl6rjGMjp39d4u8iqddCxMIJOb2o5DsBPjim6hwM2H6:l1SyAJp6rjn1gOObn4b6h9h
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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Loads dropped DLL 2 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 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b81f85a622e2a251f8b9207f9fabc1c0fe3f7946feee047bb7aafef7a9c89d4b.exe"C:\Users\Admin\AppData\Local\Temp\b81f85a622e2a251f8b9207f9fabc1c0fe3f7946feee047bb7aafef7a9c89d4b.exe"1⤵
- Loads dropped DLL
- 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
593B
MD5926512864979bc27cf187f1de3f57aff
SHA1acdeb9d6187932613c7fa08eaf28f0cd8116f4b5
SHA256b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
SHA512f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b
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Filesize
218KB
MD5d924aecee7f6fba399555523f2983c94
SHA13d3c4a6e42253519d84c517440cb0b373be65181
SHA2567032a8bb4381a3c0d14851746ffb88152f8cb626c36d0d251d01a59552be6090
SHA5127687a1b0e7eb4239e34fbce3d9d321e48d43cb17d224897e035613aa1b24bf3d72cc80712ef2495518ca9e5fa5c41c264b74c303145582e9f545937e629c5f24
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Filesize
324KB
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Filesize
380KB
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Filesize
1.7MB
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Filesize
380KB
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Filesize
324KB
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Filesize
1.7MB
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Filesize
1.7MB
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Filesize
672KB
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Filesize
672KB
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Filesize
1.7MB
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Filesize
672KB
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672KB
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672KB
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672KB
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728KB
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728KB
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728KB