Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 14:21
General
- Target ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66.exe
- Size 717KB
- Sample241107-rn3meswnal
- SHA256 ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66
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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- 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\ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66.exe"C:\Users\Admin\AppData\Local\Temp\ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66.exe"1⤵
- 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\ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66.exe"C:\Users\Admin\AppData\Local\Temp\ca59e14180c4b88c328f4704724a32c82295a9324bcbb9bf146a895f2f8eaa66.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 15163⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3100 -ip 31001⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/3100-20-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3100-37-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3100-36-0x0000000001660000-0x0000000003DDF000-memory.dmp
memory/3100-35-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3100-34-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3100-21-0x0000000001660000-0x0000000003DDF000-memory.dmp
memory/4188-16-0x0000000076F31000-0x0000000077051000-memory.dmp
memory/4188-19-0x0000000003190000-0x000000000590F000-memory.dmp
memory/4188-17-0x0000000076F31000-0x0000000077051000-memory.dmp
memory/4188-18-0x00000000743D5000-0x00000000743D6000-memory.dmp
memory/4188-15-0x0000000003190000-0x000000000590F000-memory.dmp
memory/4188-14-0x0000000003190000-0x000000000590F000-memory.dmp