Analysis
- max time kernel
156s - max time network
174s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
13/10/2023, 02:34
General
- Target a483a403797a8b762f0d73bad30bae30b4b398bb5fdace86b85f173aebad5d5d_JC.exe
- Size 386KB
- Sample231013-c2ep7acg78
- SHA256 a483a403797a8b762f0d73bad30bae30b4b398bb5fdace86b85f173aebad5d5d
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 7 IoCs
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files 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 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a483a403797a8b762f0d73bad30bae30b4b398bb5fdace86b85f173aebad5d5d_JC.exe"C:\Users\Admin\AppData\Local\Temp\a483a403797a8b762f0d73bad30bae30b4b398bb5fdace86b85f173aebad5d5d_JC.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"C:\Users\Admin\AppData\Local\Temp\a483a403797a8b762f0d73bad30bae30b4b398bb5fdace86b85f173aebad5d5d_JC.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
LangDLL.dll
LangDLL.dll
LangDLL.dll
LangDLL.dll
LangDLL.dll
LangDLL.dll
System.dll
System.dll
System.dll
memory/1564-39-0x0000000077B71000-0x0000000077C91000-memory.dmp
memory/1564-37-0x0000000000820000-0x00000000037A9000-memory.dmp
memory/1564-38-0x0000000000820000-0x00000000037A9000-memory.dmp
memory/1564-40-0x0000000077BF8000-0x0000000077BF9000-memory.dmp
memory/1564-41-0x00000000734D0000-0x0000000074724000-memory.dmp
memory/1564-42-0x0000000077C15000-0x0000000077C16000-memory.dmp
memory/1564-43-0x0000000077B71000-0x0000000077C91000-memory.dmp
memory/5044-34-0x0000000004A10000-0x0000000007999000-memory.dmp
memory/5044-35-0x0000000077B71000-0x0000000077C91000-memory.dmp
memory/5044-36-0x00000000749D0000-0x00000000749D7000-memory.dmp
memory/5044-33-0x0000000004A10000-0x0000000007999000-memory.dmp