Analysis
- max time kernel
91s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
01/11/2022, 11:45
General
- Target flash.exe
- Size 3.6MB
- Sample221101-nw56qsbeh7
- SHA256 707b25f82349269b4783b27284a71824ffd0cb9f48061a701332366b777d56c2
Score
8/10
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
- Drops file in Windows directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of SetWindowsHookEx 5 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\flash.exe"C:\Users\Admin\AppData\Local\Temp\flash.exe"1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\接码Flash\flash.exe"C:\Windows\接码Flash\flash.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\接码Flash\flashplayerax_install_cn_web.exe"C:\Windows\接码Flash\flashplayerax_install_cn_web.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
flash.exe
flash.exe
flashplayerax_install_cn_web.exe
flashplayerax_install_cn_web.exe
memory/884-132-0x0000000000400000-0x00000000004CC000-memory.dmp
memory/884-141-0x0000000000400000-0x00000000004CC000-memory.dmp
memory/4092-138-0x0000000000A40000-0x0000000001063000-memory.dmp
memory/4092-139-0x00000000014F0000-0x00000000014F3000-memory.dmp
memory/4092-142-0x0000000000A40000-0x0000000001063000-memory.dmp