Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 21:27
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe
- Size 44KB
- Sample260805-1argnswhqa
- SHA256 95c56324b4dda37be583e0f8903a3c17e808895ae81e0735c6952841d99b2e04
- MD5 39f826e54755eb53f3acde8134008b4c
- SHA1 e4ea95fcc7b5cc54a710d3dcc38c967ff0efc051
- SHA512 87689a120b7de178a71fb505dc2c0c95fe93e97612ad7f0b6840f1aee002f8d3316cf4d78cd16961f1d5dcbbef12a5e69be929de6b079767866438c5eb3ab578
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTy:bgGYcA/53GAGgIvFv
- TLSH T1612366387FE62972D37BDFB586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1744-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b840-13.dat CryptoLocker_rule2 behavioral2/memory/3404-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3404-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3404 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 2026-08-05_39f826e54755eb53f3acde8134008b4c_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 1744 wrote to memory of 3404 1744 2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_39f826e54755eb53f3acde8134008b4c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1744 -
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:3404
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 7e2942a9d02480d2ccfa4bfe9aa180948d0b7b5d784f45f5f5f453299b56461b
- MD5 229c7cf51d3f03d51d924148d437a123
- SHA1 af6ec174023e1de10f9d0bae0254d484c37b2d98
- SHA512 a21cff745f91a058385dc470bffbfb70e0343a993100c3e733719f7fb22622d38bfc0b5c177aecc0d8718bab071844ac6fbb12e206daecce2a3e12422a72cae2
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCT8:bgGYcA/53GAGgIvFN
- TLSH T1082365387FE62972E37BDF7586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH