Analysis
- max time kernel
119s - max time network
120s - platform
windows7_x64 - resource
win7-20240903-en - resource tags
- submitted
11/01/2025, 04:49
General
- Target ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
- Size 455KB
- Sample250111-ffrdmsvlay
- SHA256 ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f
Malware Config
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Disables Task Manager via registry modification
- Loads dropped DLL 2 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 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 AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- 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\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1740-20-0x0000000077040000-0x00000000771E9000-memory.dmp
memory/1740-41-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/1740-42-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/1740-43-0x0000000000460000-0x000000000047E000-memory.dmp
memory/2344-16-0x0000000002D20000-0x00000000053CA000-memory.dmp
memory/2344-17-0x0000000077041000-0x0000000077142000-memory.dmp
memory/2344-18-0x0000000077040000-0x00000000771E9000-memory.dmp
memory/2344-19-0x0000000002D20000-0x00000000053CA000-memory.dmp
memory/2344-21-0x0000000002D20000-0x00000000053CA000-memory.dmp