Analysis
- max time kernel
139s - max time network
171s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
24/03/2022, 18:23
General
- Target 003documentos transferencia.pdf.scr.exe
- Size 463KB
- Sample220324-w1g9gaceh2
- SHA256 076eee978cec1be476b4e103c42ca6081b8f6f73ddccdee87998df2f3b665f31
Score
10/10
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Checks QEMU agent file 2 TTPs 1 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\003documentos transferencia.pdf.scr.exe"C:\Users\Admin\AppData\Local\Temp\003documentos transferencia.pdf.scr.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:\Program Files (x86)\internet explorer\ieinstal.exe"C:\Users\Admin\AppData\Local\Temp\003documentos transferencia.pdf.scr.exe"2⤵
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2904-132-0x00007FFEC7C90000-0x00007FFEC7E85000-memory.dmp
memory/2904-133-0x0000000077470000-0x0000000077613000-memory.dmp
memory/2904-136-0x0000000077470000-0x0000000077613000-memory.dmp
memory/3452-135-0x0000000001000000-0x0000000001100000-memory.dmp