Analysis
- max time kernel
120s - max time network
108s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
21/10/2024, 19:04
General
- Target b1855dd1295dfd331135beb83c5991bf54e9a10abc8374dc153e5308da4e9674N.exe
- Size 80KB
- Sample241021-xrc4tstdjm
- SHA256 b1855dd1295dfd331135beb83c5991bf54e9a10abc8374dc153e5308da4e9674
Malware Config
Signatures
- BlackNET
BlackNET is an open source remote access tool written in VB.NET.
- BlackNET payload 1 IoCs
- Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
- Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b1855dd1295dfd331135beb83c5991bf54e9a10abc8374dc153e5308da4e9674N.exe"C:\Users\Admin\AppData\Local\Temp\b1855dd1295dfd331135beb83c5991bf54e9a10abc8374dc153e5308da4e9674N.exe"1⤵
- Modifies Windows Defender Real-time Protection settings
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose3⤵
- Suspicious use of AdjustPrivilegeToken
-
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
WindowsUpdate.exe
__PSScriptPolicyTest_th5almtx.y2t.ps1
memory/1464-14-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-5-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-6-0x0000000001230000-0x0000000001238000-memory.dmp
memory/1464-7-0x000000001C600000-0x000000001C64C000-memory.dmp
memory/1464-8-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-9-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-10-0x000000001F7B0000-0x000000001F812000-memory.dmp
memory/1464-13-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-0-0x00007FF918895000-0x00007FF918896000-memory.dmp
memory/1464-15-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-16-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-4-0x000000001C4A0000-0x000000001C53C000-memory.dmp
memory/1464-1-0x000000001B8F0000-0x000000001B996000-memory.dmp
memory/1464-2-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/1464-3-0x000000001BF10000-0x000000001C3DE000-memory.dmp
memory/1464-33-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-32-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-30-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-29-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-58-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-59-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/2396-60-0x00007FF9185E0000-0x00007FF918F81000-memory.dmp
memory/3060-34-0x000002B343AE0000-0x000002B343B02000-memory.dmp