Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
09/06/2024, 07:28
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe
Resource
win7-20240215-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe
Resource
win10v2004-20240508-en
5 signatures
150 seconds
General
- Target 2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe
- Size 63KB
- Sample240609-ja3fhagc93
- SHA256 13c1a79eb366a50c7e8280d724bd0127b6c9bc382570d14871a0323a1ddfedcd
- MD5 735e43115af1e74f5581d86b884e04d5
- SHA1 6cfa444db5bf361ca076362aee166af55f677a81
- SHA512 5fcb5a8df66c88bc08a2044231323be413092b819ee0d940d373e18db5f0648d02cac0769f58ecf297068d356ee0986518ba20a6c99bb0ab703d1d9bde56d4ae
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnxf:btng54SMLr+/AO/kIhfoKMHda5
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0006000000023278-12.dat CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 1204 gewos.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4816 wrote to memory of 1204 4816 2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe 82 PID 4816 wrote to memory of 1204 4816 2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe 82 PID 4816 wrote to memory of 1204 4816 2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
PID:1204
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 63KB
- SHA256 d2bef3290a0c120beff17fcd96b0b0b25bf5fe82d1bbfb0957488e6f0a17ce36
- MD5 4761bb1020c76e73affc630f42c877f5
- SHA1 0548e499af13d34cda917b9aee189711a23bdf46
- SHA512 3f7f445860b44ee64fca505a7bb85919446eeae102181ad3ecd7fd1f8943a54c10b2adc75827606aa3cb2e11bfaa5dff88d2355077e15386028621dc38a8ccc1
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnxq:btng54SMLr+/AO/kIhfoKMHdaY
- MD5 SHA1 SHA512 SSDEEP