Analysis
- max time kernel
114s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
05/10/2022, 03:35
General
- Target 073b1858f432dcffefabedb5703edcee.exe
- Size 4.5MB
- Sample221005-d5n9gadebr
- SHA256 dec419817d8e6969236c9cfa2c04f13d9302fa6a9dd73c4617015338f562f11d
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 2 IoCs
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe"C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-7NJ7D.tmp\073b1858f432dcffefabedb5703edcee.tmp"C:\Users\Admin\AppData\Local\Temp\is-7NJ7D.tmp\073b1858f432dcffefabedb5703edcee.tmp" /SL5="$801F6,3886194,832512,C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe"C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe" /VERYSILENT3⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-UHL6P.tmp\073b1858f432dcffefabedb5703edcee.tmp"C:\Users\Admin\AppData\Local\Temp\is-UHL6P.tmp\073b1858f432dcffefabedb5703edcee.tmp" /SL5="$901F6,3886194,832512,C:\Users\Admin\AppData\Local\Temp\073b1858f432dcffefabedb5703edcee.exe" /VERYSILENT4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeexplorer.exe5⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 7446⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4816 -ip 48161⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
073b1858f432dcffefabedb5703edcee.tmp
fofr.dll
fofr.dll
073b1858f432dcffefabedb5703edcee.tmp
073b1858f432dcffefabedb5703edcee.tmp
memory/2612-136-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/2612-132-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/2612-141-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/3548-142-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/3548-139-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/3548-153-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/4816-147-0x0000000000740000-0x000000000076F000-memory.dmp
memory/4816-148-0x0000000000740000-0x000000000076F000-memory.dmp
memory/4816-149-0x0000000000740000-0x000000000076F000-memory.dmp
memory/4816-152-0x0000000000740000-0x000000000076F000-memory.dmp
memory/4840-151-0x0000000000788000-0x00000000007B2000-memory.dmp
memory/4840-154-0x0000000000788000-0x00000000007B2000-memory.dmp