Analysis
- max time kernel
4265058s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
17/01/2022, 15:35
General
- Target 固定用户锁V2（去除蓝屏关机之类的所有暗装）.exe
- Size 3.9MB
- Sample220117-s1elssbdaj
- SHA256 bb831434dada721f000a29589a4a2354e15b4c1c73191c8bac8638d91481dc8b
Score
9/10
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Themida packer 4 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\固定用户锁V2（去除蓝屏关机之类的所有暗装）.exe"C:\Users\Admin\AppData\Local\Temp\固定用户锁V2（去除蓝屏关机之类的所有暗装）.exe"1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2788 -s 10762⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2788 -ip 27881⤵
-
C:\Windows\system32\MusNotification.exeC:\Windows\system32\MusNotification.exe1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2788-130-0x0000000000400000-0x0000000000D07000-memory.dmp
memory/2788-131-0x0000000000400000-0x0000000000D07000-memory.dmp
memory/2788-132-0x0000000000400000-0x0000000000D07000-memory.dmp
memory/2788-133-0x0000000000400000-0x0000000000D07000-memory.dmp