Analysis
- max time kernel
142s - max time network
143s - platform
windows7_x64 - resource
win7-20240220-en - resource tags
- submitted
17/04/2024, 10:25
General
- Target UMOWA DEV8759 - pdf.exe
- Size 545KB
- Sample240417-mfylaadf2s
- SHA256 baa364ff2127d6dc7cd49fddc9fe7a3e1c4b93173d8f7531d172a38285115ea9
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 5 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 2 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 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\UMOWA DEV8759 - pdf.exe"C:\Users\Admin\AppData\Local\Temp\UMOWA DEV8759 - pdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\UMOWA DEV8759 - pdf.exe"C:\Users\Admin\AppData\Local\Temp\UMOWA DEV8759 - pdf.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
matteret.lnk
Banner.dll
System.dll
nsDialogs.dll
memory/1624-345-0x0000000000470000-0x00000000014D2000-memory.dmp
memory/1624-341-0x00000000014E0000-0x0000000002FF7000-memory.dmp
memory/1624-343-0x0000000077680000-0x0000000077829000-memory.dmp
memory/1624-344-0x00000000778A6000-0x00000000778A7000-memory.dmp
memory/1624-346-0x00000000014E0000-0x0000000002FF7000-memory.dmp
memory/1624-348-0x0000000077870000-0x0000000077946000-memory.dmp
memory/2768-338-0x0000000077680000-0x0000000077829000-memory.dmp
memory/2768-339-0x0000000077870000-0x0000000077946000-memory.dmp
memory/2768-340-0x0000000010000000-0x0000000010006000-memory.dmp
memory/2768-342-0x0000000004830000-0x0000000006347000-memory.dmp
memory/2768-337-0x0000000004830000-0x0000000006347000-memory.dmp
memory/2768-353-0x0000000004830000-0x0000000006347000-memory.dmp