Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
12/08/2026, 03:36
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe
- Size 47KB
- Sample260812-d533maxgra
- SHA256 89d9f252944c9012346de895c446bc8f957cf018b72e150bf274718b054f1474
- MD5 78121b3991df8a2c535ddbd7353415e3
- SHA1 6adebb7226b66d246b5faad4d39b5c31784d0630
- SHA512 dbf17ea5abd8bd42a629d53dcfd1abc81ea6b417de900de09d4ef178c008765cf9bdb989988531fee76e2292e18200cd97c275c2526c96849b1323f678235acd
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhF:bgGYcA/53GAGgIvF7ET
- TLSH T1932321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3644-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x001c0000000243fa-13.dat CryptoLocker_rule2 behavioral1/memory/3776-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3776-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation 2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3776 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 2026-08-12_78121b3991df8a2c535ddbd7353415e3_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 3644 wrote to memory of 3776 3644 2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-12_78121b3991df8a2c535ddbd7353415e3_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3644 -
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:3776
-
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 1e8eaad1462eec238c8b1336145b60092952e3be2e8f8b2b6d284baddbc178e2
- MD5 1cdd1ad2bf81ac29595252707b03c146
- SHA1 c337029889838b584722078a7d73de5d2c9c280b
- SHA512 7127efa4b7ad97228413f3e338de29e222f4cc7ea22bd62936936f66e88c9bf65a1392ca54aaffbbc16a8c4411c0373d79588cd028c0d3b288469b48dc83fa9c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhW:bgGYcA/53GAGgIvF7EM
- TLSH T1AF2321387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH