Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 05:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe
- Size 41KB
- Sample260804-gph93asdnb
- SHA256 c341e95b3e2b5222af7582365e7797b4270e0b3796f445f69b4267ad3ce65b5b
- MD5 a7cc881cedd8944a54b2b07becc0b518
- SHA1 88e8c34cbb771ff131516424f85a563ea706f2c7
- SHA512 1893f0bf9b55cbcfc6985ac20fac096fbc5745bfc88636be78e97cf8706ea7c871b69188eb5c5e3cb5bf33b592ee6244ce8d8e7093ae6cef7a537b35b65c45ff
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC5:bgGYcA/53GAGgIvFs
- TLSH T18B1374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4284-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0011000000019a98-13.dat CryptoLocker_rule2 behavioral2/memory/2904-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2904-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2904 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 2026-08-04_a7cc881cedd8944a54b2b07becc0b518_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 4284 wrote to memory of 2904 4284 2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_a7cc881cedd8944a54b2b07becc0b518_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4284 -
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:2904
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 5da4604a1ee3d0cb508e720e095deb176e5118eb45991ad8ff4f8683af35129b
- MD5 6f01369dd94c1ac7d1df58c9fda9ab2f
- SHA1 f98a346939fa3c3bc4c70bc66a4e9a0737a90adc
- SHA512 a94b5ef2d24ef89953865ab8242cef333b13a47522ac3a7ff6825a65350c487252bfff47b8da4011dd6bec042ea178563ca30b7acb95411504a6edf86c97c90a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC5:bgGYcA/53GAGgIvF0
- TLSH T1091374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH