Analysis
- max time kernel
152s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
28/05/2024, 01:11
General
- Target 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe
- Size 804KB
- Sample240528-bkbfrsab92
- SHA256 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e
Malware Config
Signatures
- njRAT/Bladabindi
Widely used RAT written in .NET.
- Modifies Windows Firewall 2 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Executes dropped EXE 1 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).
- Suspicious use of AdjustPrivilegeToken 31 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe"C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\microsoftx.exe"C:\Users\Admin\AppData\Local\Temp\microsoftx.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\microsoftx.exe" "microsoftx.exe" ENABLE3⤵
- Modifies Windows Firewall
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4100 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
microsoftx.exe
memory/2920-19-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/2920-0-0x0000000074DE2000-0x0000000074DE3000-memory.dmp
memory/2920-3-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/2920-4-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/2920-1-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/2920-17-0x0000000074DE2000-0x0000000074DE3000-memory.dmp
memory/2920-2-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/2920-18-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-21-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-20-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-22-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-23-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-24-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-26-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-27-0x0000000074DE0000-0x0000000075391000-memory.dmp
memory/4940-28-0x0000000074DE0000-0x0000000075391000-memory.dmp