Analysis
- max time kernel
123s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
10/08/2023, 06:21
General
- Target (서울대학교) 230809QUOT - 0329KR.exe
- Size 993KB
- Sample230810-g4c2lacc71
- SHA256 22469270ffe028b3181a811014d9c0793dd4df7b0dc1821c28d453d8084b5922
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\(서울대학교) 230809QUOT - 0329KR.exe"C:\Users\Admin\AppData\Local\Temp\(서울대학교) 230809QUOT - 0329KR.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 9882⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1204 -ip 12041⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1204-143-0x0000000004590000-0x0000000006DB5000-memory.dmp
memory/1204-144-0x0000000004590000-0x0000000006DB5000-memory.dmp
memory/1204-145-0x0000000077781000-0x00000000778A1000-memory.dmp
memory/1204-146-0x0000000004590000-0x0000000006DB5000-memory.dmp
memory/1204-147-0x0000000077781000-0x00000000778A1000-memory.dmp