Analysis
- max time kernel
145s - max time network
132s - platform
windows7_x64 - resource
win7-en-20211208 - 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
-
C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/744-63-0x000007FEFC501000-0x000007FEFC503000-memory.dmp
memory/1492-54-0x00000000005E0000-0x00000000005E1000-memory.dmp
memory/1492-55-0x000007FE80010000-0x000007FE80011000-memory.dmp
memory/1492-58-0x000000013FDC0000-0x00000001415C6000-memory.dmp
memory/1492-59-0x000000013FDC0000-0x00000001415C6000-memory.dmp
memory/1492-60-0x0000000002360000-0x0000000002362000-memory.dmp
memory/1492-61-0x0000000002366000-0x0000000002385000-memory.dmp
memory/1492-62-0x0000000002385000-0x0000000002386000-memory.dmp