Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
22/12/2024, 02:59
General
- Target 4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300.exe
- Size 246KB
- Sample241222-dg1bts1mal
- SHA256 4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300
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
- Drops file in System32 directory 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).
- 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 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300.exe"C:\Users\Admin\AppData\Local\Temp\4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300.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 Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300.exe"C:\Users\Admin\AppData\Local\Temp\4783eea1eb0d11b98d15039aa6c9e5297ca7d166d3744c61ee09675f593e7300.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/3988-16-0x0000000077818000-0x0000000077819000-memory.dmp
memory/3988-15-0x0000000001660000-0x0000000001760000-memory.dmp
memory/3988-14-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3988-17-0x0000000001660000-0x0000000001760000-memory.dmp
memory/3988-18-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3988-19-0x0000000077791000-0x00000000778B1000-memory.dmp
memory/4064-10-0x0000000077791000-0x00000000778B1000-memory.dmp
memory/4064-13-0x00000000743E5000-0x00000000743E6000-memory.dmp
memory/4064-12-0x0000000077791000-0x00000000778B1000-memory.dmp
memory/4064-11-0x0000000004250000-0x0000000004370000-memory.dmp
memory/4064-9-0x0000000004250000-0x0000000004370000-memory.dmp
memory/4064-25-0x0000000004250000-0x0000000004370000-memory.dmp