Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
28/03/2022, 14:57
General
- Target b59b30dc75031ddf3bba1e7546b93139.exe
- Size 43KB
- Sample220328-sbkfrabca9
- SHA256 c13dfa4eb40ee0a1841efd1fda20d1f6045d4f28ee771dda0784ada2481b569a
Malware Config
Extracted
-
njrat
-
Njrat 0.7 Golden By Hassan Amiri
-
HacKed
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2.tcp.ngrok.io:12160
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Windows Update
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reg_key
Windows Update
-
splitter
|Hassan|
Signatures
- njRAT/Bladabindi
Widely used RAT written in .NET.
- Executes dropped EXE 4 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: GetForegroundWindowSpam 2 IoCs
- Suspicious use of AdjustPrivilegeToken 31 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b59b30dc75031ddf3bba1e7546b93139.exe"C:\Users\Admin\AppData\Local\Temp\b59b30dc75031ddf3bba1e7546b93139.exe"1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\hos_texexe.exe"C:\Users\Admin\AppData\Local\Temp\hos_texexe.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe3⤵
- Creates scheduled task(s)
-
-
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C:\Users\Admin\AppData\Local\Temp\Server.exeC:\Users\Admin\AppData\Local\Temp/Server.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\Server.exeC:\Users\Admin\AppData\Local\Temp/Server.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\Server.exeC:\Users\Admin\AppData\Local\Temp/Server.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Server.exe.log
Server.exe
Server.exe
Server.exe
Server.exe
hos_texexe.exe
hos_texexe.exe
memory/572-130-0x0000000000080000-0x0000000000092000-memory.dmp
memory/572-133-0x0000000004D00000-0x0000000004D92000-memory.dmp
memory/572-132-0x0000000005210000-0x00000000057B4000-memory.dmp
memory/572-131-0x00000000049A0000-0x0000000004A3C000-memory.dmp
memory/4740-140-0x0000000005930000-0x000000000593A000-memory.dmp
memory/4740-141-0x0000000005B90000-0x0000000005BF6000-memory.dmp