Analysis
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max time kernel
147s -
max time network
149s -
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, 22:57
Static task
static1
Behavioral task
behavioral1
Sample
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll
Resource
win7-20240221-en
General
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Target
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll
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Size
348KB
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MD5
aef998d9264fb3854bc677b69ea2c036
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SHA1
3eb134a014c0bcc9edbfda27103b4dff13dd34ec
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SHA256
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f
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SHA512
80a9d44c5989c53b43f5c35a033f6e4a4795c5a40336ffdc4e7759bb0b775f834e6bcd8186d6d13dcdf78c501e9fe0dd23ff1ecd84651c33a79d07b9419b3494
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SSDEEP
3072:cfRBoFWlyQNZhFGVl4LSz1RNeyOb2EqMGzs4VlS0q0Ebs:cpdHNr4Vl4LSz1RZOyEqMj4VlS0q0ks
Malware Config
Signatures
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UPX dump on OEP (original entry point) 2 IoCs
resource yara_rule behavioral2/memory/4752-6-0x0000000000400000-0x0000000000432000-memory.dmp UPX behavioral2/memory/4752-7-0x00000000006E0000-0x0000000000712000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 4752 rundll32mgr.exe -
Loads dropped DLL 1 IoCs
pid Process 4752 rundll32mgr.exe -
resource yara_rule behavioral2/memory/4752-6-0x0000000000400000-0x0000000000432000-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 3472 4752 WerFault.exe 89 -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3516 wrote to memory of 4944 3516 rundll32.exe 87 PID 3516 wrote to memory of 4944 3516 rundll32.exe 87 PID 3516 wrote to memory of 4944 3516 rundll32.exe 87 PID 4944 wrote to memory of 4752 4944 rundll32.exe 89 PID 4944 wrote to memory of 4752 4944 rundll32.exe 89 PID 4944 wrote to memory of 4752 4944 rundll32.exe 89
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3516 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4944 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4752 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 4844⤵
- Program crash
PID:3472
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4752 -ip 47521⤵PID:1404
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