Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
11/06/2024, 02:11
General
- Target 4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008.exe
- Size 793KB
- Sample240611-cmhtas1clm
- SHA256 4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- 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
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008.exe"C:\Users\Admin\AppData\Local\Temp\4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008.exe"C:\Users\Admin\AppData\Local\Temp\4a83e984de761ee13699b30d48ea2ba2499371efa437698cf3b81d495e266008.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4660 -s 10043⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4660 -ip 46601⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/3132-13-0x00000000053A0000-0x0000000008407000-memory.dmp
memory/3132-14-0x0000000077A61000-0x0000000077B81000-memory.dmp
memory/3132-15-0x00000000746B4000-0x00000000746B5000-memory.dmp
memory/3132-18-0x00000000053A0000-0x0000000008407000-memory.dmp
memory/3132-33-0x00000000053A0000-0x0000000008407000-memory.dmp
memory/4660-16-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4660-17-0x0000000001660000-0x00000000046C7000-memory.dmp
memory/4660-19-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4660-32-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4660-34-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4660-35-0x0000000001660000-0x00000000046C7000-memory.dmp