Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
08/07/2023, 10:09
General
- Target tmp.exe
- Size 268KB
- Sample230708-l641baea88
- SHA256 ec5be7c50c187de9346e381fe229eb22a3383dfd70bbac3568051af0ee25016c
Score
10/10
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
- 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: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.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\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
System.dll
memory/2892-144-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2892-145-0x0000000001660000-0x00000000029B2000-memory.dmp
memory/2892-146-0x0000000001660000-0x00000000029B2000-memory.dmp
memory/2892-147-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3320-142-0x0000000002A10000-0x0000000003D62000-memory.dmp
memory/3320-143-0x0000000002A10000-0x0000000003D62000-memory.dmp