Analysis
- max time kernel
155s - max time network
165s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
27/01/2024, 13:33
General
- Target 7a628e99bb4be11e4dc7d90c7e048ed3.exe
- Size 755KB
- Sample240127-qtyd8adbc3
- SHA256 d66c418354ff17f2a4881407777b84f02bd1f3ddfaf7f4beb3203be97d0bcca5
Score
10/10
Malware Config
Signatures
- FakeAV, RogueAntivirus
FakeAV or Rogue AntiVirus is a class of malware that displays false alert messages.
- FakeAV payload 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 2 IoCs
- Drops file in System32 directory 2 IoCs
- Drops file in Windows directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\7a628e99bb4be11e4dc7d90c7e048ed3.exe"C:\Users\Admin\AppData\Local\Temp\7a628e99bb4be11e4dc7d90c7e048ed3.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\KeyGen.exe"C:\Windows\KeyGen.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
KeyGen.exe
memory/772-0-0x0000000000400000-0x00000000004C8000-memory.dmp
memory/772-1-0x0000000001F40000-0x0000000001F41000-memory.dmp
memory/772-18-0x0000000000400000-0x00000000004C8000-memory.dmp
memory/3208-16-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3208-19-0x0000000000400000-0x000000000041F000-memory.dmp