Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
09/08/2026, 04:03
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe
- Size 37KB
- Sample260809-emd68azdlf
- SHA256 a1096171c746ec94a4d80bbb8a2f0250f1b11bda44461a835f1a862946465dc5
- MD5 c9a92bcc8fe86ea81e6b683c31b7b6ff
- SHA1 4433fd9467cd8bb02d17281884763e86b3a2b414
- SHA512 5dee7c569cb795b600a6b5ec863aafe84591f3f7835c19b18094e454e2f31f982b7ae8f0a1e0af1b311bef6396b0740d49b71ff54c4fef7d12db425cbf3e232d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSp91g:bgGYcA/53GAGgIvFig
- TLSH T1A303B5387FD62972D37BDE7585F791C6B936B8223D16880D54CA53848C33B62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1404-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000e00000002437b-13.dat CryptoLocker_rule2 behavioral1/memory/4784-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4784-19-0x0000000008000000-0x000000000800A000-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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation 2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4784 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1404 wrote to memory of 4784 1404 2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_c9a92bcc8fe86ea81e6b683c31b7b6ff_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1404 -
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:4784
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 37KB
- SHA256 fc011639905e4f6b6928617d6e4fcc4ea846774d83c682170787688bf7bae775
- MD5 d5c94ef884314fce782320f309b6b16c
- SHA1 602d53cc4118ffae371a09d9db76c9dca985323b
- SHA512 7d3dfa7cea22a2ce622db4adedf8916e46a82ea1f1f926fe5094c6e2cd472649970e73af526eab0b96a256efb323863985a44b632c910a7df1df5e8711ee3b5e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSp91F:bgGYcA/53GAGgIvFiF
- TLSH T19903B5387FD62972D37BDE7586F791C6B936B8223D16880D54CA53848C33B52EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH