Analysis
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max time kernel
93s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29/03/2024, 20:18
Static task
static1
Behavioral task
behavioral1
Sample
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll
Resource
win7-20240221-en
General
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Target
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll
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Size
356KB
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MD5
beb87f3dbe2f6921ba90b7823c57e131
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SHA1
0c602edba024a68b042607323adfee52c38bd59c
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SHA256
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd
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SHA512
91f004ab1adbea64c9201859b04c58e577bbb5dc5473f11fa562805a039fe8245be8781adb3289dac61d8cc5d072479dbb1d99f14e835eff9a8600c8c0e8d98b
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SSDEEP
3072:0fJChtSplyQNZhFx6fLSz1RNeyOb2EqMGzs4VlS0q0Ep:0hRHNrT6fLSz1RZOyEqMj4VlS0q0K
Malware Config
Signatures
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UPX dump on OEP (original entry point) 2 IoCs
resource yara_rule behavioral2/memory/3340-7-0x0000000000400000-0x0000000000432000-memory.dmp UPX behavioral2/memory/3340-8-0x00000000021D0000-0x0000000002202000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3340 rundll32mgr.exe -
Loads dropped DLL 1 IoCs
pid Process 3340 rundll32mgr.exe -
resource yara_rule behavioral2/memory/3340-7-0x0000000000400000-0x0000000000432000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 1232 3340 WerFault.exe 86 -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 5092 wrote to memory of 3136 5092 rundll32.exe 85 PID 5092 wrote to memory of 3136 5092 rundll32.exe 85 PID 5092 wrote to memory of 3136 5092 rundll32.exe 85 PID 3136 wrote to memory of 3340 3136 rundll32.exe 86 PID 3136 wrote to memory of 3340 3136 rundll32.exe 86 PID 3136 wrote to memory of 3340 3136 rundll32.exe 86
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:5092 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3136 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:3340 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3340 -s 5404⤵
- Program crash
PID:1232
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3340 -ip 33401⤵PID:4732
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
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Filesize
157KB
MD52ad7467eeceedd64b8bd4f6e04c3cd49
SHA1d6c5d9878dc49ae9b531d61283609e207154a921
SHA2562aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9
SHA5127a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a