Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
15/11/2024, 02:56
General
- Target b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92.exe
- Size 354KB
- Sample241115-de2rwaxkft
- SHA256 b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92
Malware Config
Signatures
- Guloader family
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92.exe"C:\Users\Admin\AppData\Local\Temp\b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92.exe"C:\Users\Admin\AppData\Local\Temp\b199b1b1500796c646cfb42f1175b84b7e1493694a80bea9d5de5a0550ed4f92.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/228-14-0x0000000000450000-0x000000000130E000-memory.dmp
memory/228-15-0x0000000076FE8000-0x0000000076FE9000-memory.dmp
memory/228-16-0x0000000077005000-0x0000000077006000-memory.dmp
memory/228-17-0x0000000000450000-0x000000000130E000-memory.dmp
memory/228-18-0x00000000728C0000-0x0000000073B14000-memory.dmp
memory/228-19-0x0000000076F61000-0x0000000077081000-memory.dmp
memory/4736-10-0x0000000004A20000-0x00000000058DE000-memory.dmp
memory/4736-11-0x0000000076F61000-0x0000000077081000-memory.dmp
memory/4736-12-0x0000000073DC5000-0x0000000073DC6000-memory.dmp
memory/4736-13-0x0000000004A20000-0x00000000058DE000-memory.dmp