Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20220331-en - submitted
05/04/2022, 04:33
General
- Target b57e79ab29ef870fe17d27375e65bce0.exe
- Size 488KB
- Sample220405-e6hzhshcg3
- SHA256 bff236cb3c2cbc2e5c9feaa5bdd967fd07b9047cbb73b70b63e07c334049d8a3
Malware Config
Extracted
-
njrat
-
0.7.3
-
filmzzzz
-
film.royalprop.trade:8109
-
Client.exe
-
reg_key
Client.exe
-
splitter
0987
Signatures
- njRAT/Bladabindi
Widely used RAT written in .NET.
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 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: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 24 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b57e79ab29ef870fe17d27375e65bce0.exe"C:\Users\Admin\AppData\Local\Temp\b57e79ab29ef870fe17d27375e65bce0.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TndBQUn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp350A.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\b57e79ab29ef870fe17d27375e65bce0.exe"{path}"2⤵
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
b57e79ab29ef870fe17d27375e65bce0.exe.log
tmp350A.tmp
memory/3500-124-0x0000000000D10000-0x0000000000D90000-memory.dmp
memory/3500-125-0x0000000005720000-0x00000000057BC000-memory.dmp
memory/3500-126-0x0000000005D70000-0x0000000006314000-memory.dmp
memory/3500-127-0x0000000005860000-0x00000000058F2000-memory.dmp
memory/3500-128-0x00000000057E0000-0x00000000057EA000-memory.dmp
memory/3500-129-0x00000000059F0000-0x0000000005A46000-memory.dmp
memory/3500-130-0x0000000007890000-0x00000000078F6000-memory.dmp
memory/4588-134-0x0000000000400000-0x000000000041A000-memory.dmp