Analysis
- max time kernel
150s - max time network
149s - 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, 06:54
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe
- Size 47KB
- Sample260805-hpgxnsfc47
- SHA256 fa785285190c656aff07263fcede8174f65ecf18f16ddeea52ed7c14fb863ef8
- MD5 881a66ccdf0e1c1da92fc1e4f442cb48
- SHA1 0ce63c1352b6e6bd455640a8701161bb3a4c4df1
- SHA512 0e1d1b2b76105f3f5cd5c89349754ce4c73ba137167d0debd91b83fb5b654598ee3f0cc768c54019b975ee80684d52ba6f3f9185928d99f1e4265b2914a52418
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCM:bgGYcA/53GAGgIvF9v2ZZCM
- TLSH T1E52355387FE66932E37BCFB586F651C6B97578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4704-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000001138e-13.dat CryptoLocker_rule2 behavioral2/memory/3824-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3824-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3824 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_881a66ccdf0e1c1da92fc1e4f442cb48_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 4704 wrote to memory of 3824 4704 2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_881a66ccdf0e1c1da92fc1e4f442cb48_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4704 -
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:3824
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 948a6a472f5291527e0201463ea0001faa11460c06098b9173477dc4d8b82d3c
- MD5 7dffbb6ee4cc0b11f51a8432b1dbd28f
- SHA1 762ea8d6c73ecf91419515b8e1b55153619afc5d
- SHA512 58c484351a86740544e51c0665851bfa7aca7624b0125fa8b9d79976a80bca25aede8910e8d0603c10ef3c9155f6352d6d20edf73505eb5770400fbb7ce40574
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCOQ:bgGYcA/53GAGgIvF9v2ZZCt
- TLSH T1AC2344387FE66932E37BCFB586F651C6B97578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH