Analysis
- max time kernel
143s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
31/10/2024, 02:35
General
- Target 8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
- Size 893KB
- Sample241031-c3cbfswndy
- SHA256 8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415
Malware Config
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 2 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 6 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: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
memory/3444-38-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3444-23-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3444-24-0x0000000001660000-0x0000000003763000-memory.dmp
memory/3444-37-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3444-39-0x0000000001660000-0x0000000003763000-memory.dmp
memory/3444-40-0x0000000077991000-0x0000000077AB1000-memory.dmp
memory/3444-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3668-20-0x0000000077991000-0x0000000077AB1000-memory.dmp
memory/3668-19-0x0000000003190000-0x0000000005293000-memory.dmp
memory/3668-21-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3668-22-0x0000000003190000-0x0000000005293000-memory.dmp
memory/3668-18-0x0000000003190000-0x0000000005293000-memory.dmp