Analysis
- max time kernel
150s - max time network
147s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
23/08/2026, 00:01
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe
- Size 47KB
- Sample260823-aa91xa1brd
- SHA256 5117c94b0317315daf1182844ae05e7adbedaf8d1dad99c6a5fb1c95f1057cf0
- MD5 cfb80a497bbd50217637c0811f81669e
- SHA1 910ff441118f13f478b1af08cb19bc4c2c816a15
- SHA512 e0f8b60eedac98189b18a213ff0c1ca96c4ab7ae2a6e8b78b1623714402bc50f99cfc7305b84dcf321446adfa4373abec222bbc69d6fe9d0cf47beeabd5e681d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhzZ40:bgGYcA/53GAGgIvF7EF
- TLSH T15F2322387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4676-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000001138e-12.dat CryptoLocker_rule2 behavioral2/memory/4192-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4192-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4192 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 2026-08-22_cfb80a497bbd50217637c0811f81669e_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 4676 wrote to memory of 4192 4676 2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-22_cfb80a497bbd50217637c0811f81669e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4676 -
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:4192
-
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 c7d073f6e6b51f740590bc15c0b003651a472a46031e8ef17cc1b0123f1c3d32
- MD5 e42bc0eb0bc224d3837a54289d89ede3
- SHA1 26bacd97c007eb598eaa23435ab14aac6d5de8b9
- SHA512 26a3f0dc449c3108d49d41ee8a90138cc8fd5bd18b27a63fd3d76cee9212caa9c1207c44d14d6328487ffdd71a3532670df909399f13d801ccb1cf9bd6475466
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhzZ4V:bgGYcA/53GAGgIvF7E8
- TLSH T1472322387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH