Analysis
- max time kernel
86s - max time network
102s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
21/11/2022, 08:25
General
- Target 9c267d6fa78174b3cba8ac8de558d83a97efb8494ba1c675f1493cb41133a897.exe
- Size 7.1MB
- Sample221121-kbabsabc54
- SHA256 9c267d6fa78174b3cba8ac8de558d83a97efb8494ba1c675f1493cb41133a897
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Modifies extensions of user files 1 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.
- Loads dropped DLL 1 IoCs
- Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
- Themida packer 5 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
- Drops desktop.ini file(s) 3 IoCs
- Sets desktop wallpaper using registry 2 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\9c267d6fa78174b3cba8ac8de558d83a97efb8494ba1c675f1493cb41133a897.exe"C:\Users\Admin\AppData\Local\Temp\9c267d6fa78174b3cba8ac8de558d83a97efb8494ba1c675f1493cb41133a897.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Modifies extensions of user files
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
AgileDotNetRT.dll
memory/748-54-0x0000000000030000-0x0000000000750000-memory.dmp
memory/748-56-0x0000000074FB1000-0x0000000074FB3000-memory.dmp
memory/748-57-0x0000000073BE0000-0x0000000074365000-memory.dmp
memory/748-58-0x0000000073BE0000-0x0000000074365000-memory.dmp
memory/748-59-0x0000000074C10000-0x0000000074C90000-memory.dmp
memory/748-60-0x0000000073BE0000-0x0000000074365000-memory.dmp
memory/748-61-0x0000000077530000-0x00000000776B0000-memory.dmp
memory/748-62-0x0000000073BE0000-0x0000000074365000-memory.dmp
memory/748-63-0x0000000077530000-0x00000000776B0000-memory.dmp
memory/748-64-0x0000000002400000-0x000000000240C000-memory.dmp
memory/748-65-0x00000000050A5000-0x00000000050B6000-memory.dmp