Analysis
- max time kernel
149s - max time network
159s - platform
windows7_x64 - resource
win7-20230705-en - resource tags
- submitted
10/07/2023, 09:38
General
- Target RFQNew request order RFQ#0023111 DOC.exe
- Size 268KB
- Sample230710-ll6cmshf72
- SHA256 7b3447523ec225e7323cfa258ad943e828da6c9605539d1db338c30c8bf1608c
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 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtCreateThreadExHideFromDebugger 2 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 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQNew request order RFQ#0023111 DOC.exe"C:\Users\Admin\AppData\Local\Temp\RFQNew request order RFQ#0023111 DOC.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\RFQNew request order RFQ#0023111 DOC.exe"C:\Users\Admin\AppData\Local\Temp\RFQNew request order RFQ#0023111 DOC.exe"2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
System.dll
memory/2092-71-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2092-72-0x0000000001470000-0x00000000031E5000-memory.dmp
memory/2092-74-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2092-76-0x0000000001470000-0x00000000031E5000-memory.dmp
memory/2092-96-0x0000000001470000-0x00000000031E5000-memory.dmp
memory/2092-99-0x0000000001470000-0x00000000031E5000-memory.dmp
memory/3052-69-0x00000000037D0000-0x0000000005545000-memory.dmp
memory/3052-70-0x00000000037D0000-0x0000000005545000-memory.dmp