Analysis
- max time kernel
123s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
09/08/2023, 12:24
General
- Target inquiry 0093848831 xlsx.exe
- Size 466KB
- Sample230809-pk26dabb75
- SHA256 6b91613f78377d180e0385169b9582636dabd880e7e956b2d42495d1b627e7ea
Score
10/10
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Checks QEMU agent file 2 TTPs 1 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\inquiry 0093848831 xlsx.exe"C:\Users\Admin\AppData\Local\Temp\inquiry 0093848831 xlsx.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 1322⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1204 -ip 12041⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1204-142-0x0000000004540000-0x00000000053E9000-memory.dmp
memory/1204-143-0x0000000004540000-0x00000000053E9000-memory.dmp
memory/1204-144-0x0000000077781000-0x00000000778A1000-memory.dmp
memory/1204-145-0x0000000004540000-0x00000000053E9000-memory.dmp