Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
29/07/2026, 22:21
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe
- Size 47KB
- Sample260729-19s5jstemd
- SHA256 75055ebefcb4c63fe51756a4e15ff91d9d75e491322614efedb127d11fb4595c
- MD5 b1a6ad28848486c54c8cbbdd164214e4
- SHA1 fc70bab5bebd755b1101798e65f052483555a1a3
- SHA512 a797c14e513f70cd57a408c8a6b909badb10f9899ce978d6ddf280c55bcd4f272067fce277e97058a42b99493d5738b6bbe59cc8e2575e76ba3d4f77166d0e5f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhq0:bgGYcA/53GAGgIvF7Ez
- TLSH T1792322387BE52932D37BDFB586F691C67975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4128-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/3176-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3176-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3176 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 2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_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 4128 wrote to memory of 3176 4128 2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-29_b1a6ad28848486c54c8cbbdd164214e4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128 -
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:3176
-
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 5e90fd3ce8c2a71212b2ae6b2227e9b55d19e0726cef88dca678fa40437ef0af
- MD5 35ccaaa0ee2294d991ac6596d64ce636
- SHA1 31c58e87d41a88a26c6404b3cbd39d251f3b7da9
- SHA512 afbbb2351c50da88772c11d8faa25eab486e1e7b5296584456caa1b72fe49a5bb6b0dd284962b34d9e94bf20b4c33f26e125dfa1af77cfc505f1adf17d1ece8d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhqu:bgGYcA/53GAGgIvF7Et
- TLSH T1B92322387BE52932E37BDFB586F691C67975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH