Analysis
- max time kernel
154s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
17/04/2024, 10:25
General
- Target UMOWA DEV8759 - pdf.exe
- Size 545KB
- Sample240417-mf9njsdf2z
- SHA256 baa364ff2127d6dc7cd49fddc9fe7a3e1c4b93173d8f7531d172a38285115ea9
Score
10/10
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 5 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 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 5 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⤵
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4036,i,17128687272012926844,9802527383925822781,262144 --variations-seed-version --mojo-platform-channel-handle=4300 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Banner.dll
System.dll
nsDialogs.dll
matteret.lnk
memory/2024-341-0x00000000016D0000-0x00000000031E7000-memory.dmp
memory/2024-342-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/2024-343-0x00000000016D0000-0x00000000031E7000-memory.dmp
memory/3024-337-0x00000000049C0000-0x00000000064D7000-memory.dmp
memory/3024-338-0x00000000771B1000-0x00000000772D1000-memory.dmp
memory/3024-339-0x00000000049C0000-0x00000000064D7000-memory.dmp
memory/3024-340-0x0000000010000000-0x0000000010006000-memory.dmp
memory/3024-348-0x00000000049C0000-0x00000000064D7000-memory.dmp