Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/08/2026, 12:00
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe
- Size 42KB
- Sample260803-n6rfbswhqa
- SHA256 69e8d1f4182dd73e0d9de737d3b3f965f0d7d4a2f90fbde67db799c86798ae59
- MD5 458cab5a614494d2e8d356b9b94c9d3d
- SHA1 237769ea450c01f6aa9db71b03afc25ef8f063d9
- SHA512 df8f6cf5ae217103f91c9557d585ef7ccbe3eb5f99631d8f5ac430f95c1644070406b8bb560c1ed3e739c3ec257d0daa15ddeab82beb776f23274eb3b3ff84a3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfdhm:bgGYcA/53GAGgIvF7Fhm
- TLSH T1661354386FE62972D37BDFB586F691C67935B8223D16980D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2968-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/4128-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4128-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4128 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2968 wrote to memory of 4128 2968 2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_458cab5a614494d2e8d356b9b94c9d3d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4128
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 43KB
- SHA256 64beb0a2f65d9449a2d082a2202c991734ab196d61a9ed05a3ad381e1aebf286
- MD5 98ae9d6256769544832cae785edc9afd
- SHA1 b277d49c1426aa78a2f32dc93da022ad55cfa699
- SHA512 2c20a011ea0673c6dc533cd67c66ad32912ea7d49204f1ab7cab571b294b5c488ac11ad38d7c238bc3d0fb2cff46ef8b8a4d9335d51e6a5aa0314da33b604904
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfdhc:bgGYcA/53GAGgIvF7Fhc
- TLSH T1B91364386FE62972D37BDFB586F691C67935B8223D16980D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH