Analysis
- max time kernel
160s - max time network
160s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
02/02/2022, 04:25
General
- Target venecrypt.exe
- Size 9.1MB
- Sample220202-e172fsgbh4
- SHA256 79bd4886bde18afe23cc54920491023a659ed849d31e1c73155f810909995329
Score
9/10
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Themida packer 2 IoCs
Detects Themida, an advanced Windows software protection system.
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\venecrypt.exe"C:\Users\Admin\AppData\Local\Temp\venecrypt.exe"1⤵
- Modifies extensions of user files
- Checks BIOS information in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3448-134-0x00007FFA80030000-0x00007FFA80031000-memory.dmp
memory/3448-133-0x00007FFA80000000-0x00007FFA80002000-memory.dmp
memory/3448-137-0x00007FF710050000-0x00007FF711856000-memory.dmp
memory/3448-138-0x00007FF710050000-0x00007FF711856000-memory.dmp
memory/3448-139-0x000002334A0A0000-0x000002334A0A2000-memory.dmp
memory/3448-140-0x000002334A0A2000-0x000002334A0A4000-memory.dmp