Analysis
- max time kernel
150s - max time network
126s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
08/06/2023, 10:58
General
- Target d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f.exe
- Size 609KB
- Sample230608-m2tt8aee69
- SHA256 d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f.exe"C:\Users\Admin\AppData\Local\Temp\d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f.exe"C:\Users\Admin\AppData\Local\Temp\d0f5e5711e53f7f7cafbfedf8b7614341a9685043411bdfd2b0d1f1aebb1ac3f.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
memory/996-93-0x0000000001470000-0x000000000433C000-memory.dmp
memory/996-90-0x0000000000400000-0x0000000001462000-memory.dmp
memory/996-91-0x0000000001470000-0x000000000433C000-memory.dmp
memory/996-92-0x0000000000400000-0x0000000001462000-memory.dmp
memory/996-94-0x0000000000400000-0x0000000001462000-memory.dmp
memory/996-119-0x0000000000400000-0x0000000001462000-memory.dmp
memory/996-120-0x0000000001470000-0x000000000433C000-memory.dmp
memory/996-121-0x0000000001470000-0x000000000433C000-memory.dmp
memory/996-122-0x0000000034860000-0x0000000034B63000-memory.dmp
memory/996-123-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1316-89-0x0000000003270000-0x000000000613C000-memory.dmp
memory/1316-88-0x0000000003270000-0x000000000613C000-memory.dmp