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, 04:41
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe
- Size 47KB
- Sample260805-fbav4aap3t
- SHA256 8025aea73d9c85a0e3ae49d0e37e70044a8e57c95bb182eb8079d84415750542
- MD5 e401b90f19bedc71ded84d49c93bf31b
- SHA1 2860318e421a652c2b2cf24e7f1a2478f0b977e0
- SHA512 be7f44871190f81e2d2e5b05edd591ec0f0f9cd80089298336e00d1863da892c39f2b8dd72c038ad44af8140aaf6d3d0076ff4a331ccd6e82d6387c76c7564d4
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhua:bgGYcA/53GAGgIvF7Eka
- TLSH T1132321387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4812-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b83f-12.dat CryptoLocker_rule2 behavioral2/memory/2744-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2744-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2744 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_e401b90f19bedc71ded84d49c93bf31b_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 4812 wrote to memory of 2744 4812 2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_e401b90f19bedc71ded84d49c93bf31b_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4812 -
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:2744
-
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 44bb49d8febafc5f9c95db541945fb4ab2dd492035ed641ce559e8c0d9fa9681
- MD5 09fc2c6a9dc5e9f040c5896c2a201488
- SHA1 85baeaa043f1d79a7f0c782901ce3651db8876af
- SHA512 b714c64e323c6f6261c2a15e7197d903f45dc757a4014e0d81413d057e0a29b87d46caf4e055037a0ca656a85892f37c70bcd308a796cb0daf76ba5f187754ce
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuX:bgGYcA/53GAGgIvF7EkX
- TLSH T1082321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH