Analysis
- max time kernel
143s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
03/02/2024, 01:34
General
- Target 8b0c5e6df9628866736f087f0c2005b1.exe
- Size 29KB
- Sample240203-bzdvfadhc6
- SHA256 873495d40ff30be077c91548202af5ef9b74e0c9ca1338c2c8707ce916704120
Score
7/10
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in System32 directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8b0c5e6df9628866736f087f0c2005b1.exe"C:\Users\Admin\AppData\Local\Temp\8b0c5e6df9628866736f087f0c2005b1.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8b0c5e6df9628866736f087f0c2005b1.exe"C:\Users\Admin\AppData\Local\Temp\8b0c5e6df9628866736f087f0c2005b1.exe" y2⤵
- Drops file in System32 directory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 4043⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2552 -ip 25521⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/2552-2-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2552-5-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4660-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4660-1-0x0000000000400000-0x000000000040E000-memory.dmp