Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
03/08/2023, 15:47
General
- Target 363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3exe_JC.exe
- Size 332KB
- Sample230803-s8pfzaea57
- SHA256 363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 2 IoCs
- Adds Run key to start application 2 TTPs 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).
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3exe_JC.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\363b7aaa875c65c3c134a3c2051a4bd8fa5a9a1376597609f95a43b219e56bd3exe_JC.exe"2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
System.dll
System.dll
memory/536-147-0x0000000002AA0000-0x0000000003E0A000-memory.dmp
memory/536-148-0x0000000077331000-0x0000000077451000-memory.dmp
memory/536-149-0x0000000002AA0000-0x0000000003E0A000-memory.dmp
memory/536-150-0x0000000010000000-0x0000000010006000-memory.dmp
memory/1664-151-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1664-152-0x0000000001660000-0x00000000029CA000-memory.dmp
memory/1664-153-0x00000000773B8000-0x00000000773B9000-memory.dmp
memory/1664-154-0x0000000001660000-0x00000000029CA000-memory.dmp
memory/1664-155-0x0000000077331000-0x0000000077451000-memory.dmp
memory/1664-157-0x0000000000400000-0x0000000001654000-memory.dmp