Analysis
- max time kernel
178s - max time network
192s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
07/06/2022, 17:32
General
- Target 1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe
- Size 950KB
- Sample220607-v4jq2aaedp
- SHA256 1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2
Malware Config
Signatures
- NirSoft MailPassView 4 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 4 IoCs
Password recovery tool for various web browsers
- Nirsoft 8 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Uses the VBS compiler for execution 1 TTPs
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 3 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 14 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 29 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe"C:\Users\Admin\AppData\Local\Temp\1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\btZrhY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE6B6.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe"C:\Users\Admin\AppData\Local\Temp\1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tmp3A26.tmp"3⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tmp4264.tmp"3⤵
- Accesses Microsoft Outlook accounts
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
1bce0a4fd09685b7e54576ffd391db45dc0e8092dea9a0628615bac9d40e98d2.exe.log
tmp3A26.tmp
tmpE6B6.tmp
memory/396-141-0x0000000000400000-0x000000000045B000-memory.dmp
memory/396-145-0x0000000000400000-0x000000000045B000-memory.dmp
memory/396-144-0x0000000000400000-0x000000000045B000-memory.dmp
memory/396-143-0x0000000000400000-0x000000000045B000-memory.dmp
memory/3128-139-0x0000000074D80000-0x0000000075331000-memory.dmp
memory/3128-138-0x0000000074D80000-0x0000000075331000-memory.dmp
memory/4620-148-0x0000000000400000-0x000000000041C000-memory.dmp
memory/4620-150-0x0000000000400000-0x000000000041C000-memory.dmp
memory/4620-151-0x0000000000400000-0x000000000041C000-memory.dmp
memory/4620-152-0x0000000000400000-0x000000000041C000-memory.dmp
memory/4744-130-0x0000000074D80000-0x0000000075331000-memory.dmp
memory/4744-137-0x0000000074D80000-0x0000000075331000-memory.dmp
memory/4744-131-0x0000000074D80000-0x0000000075331000-memory.dmp