Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
29/07/2026, 07:55
General
- Target Notice%20from%20Tax%20Departmen.dmg.dll
- Size 257KB
- Sample260729-jsjfcaydmg
- SHA256 b9ddd7f8aaeb1247eaa881caf75f8749d4b7c4442408c37d9bb57ad9927ee19a
Score
8/10
Malware Config
Signatures
- Badlisted process makes network request 21 IoCs
Network request originating from process or tool commonly abused by malware.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 1 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Notice%20from%20Tax%20Departmen.dmg.dll,#11⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "CacheTask" /tr ""C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\Mstet.exe"" /sc onlogon /rl highest /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\Mstet.exeC:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\Mstet.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Mstet.exe
memory/916-3-0x000002692C580000-0x000002692C581000-memory.dmp