Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
26/08/2026, 19:09
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe
- Size 42KB
- Sample260826-xtzevavdna
- SHA256 bec31cd667e1cde90c89123cd6d1e03c507237d7da95b5ef75fe48d7dd56a071
- MD5 83cd8de25cba0350c41a32a4fb889061
- SHA1 830e951150ec2871b5866a743e7bbf1315d8b9a0
- SHA512 9e39e657538f1e48b2804f0543d74838a3bbd408beda9ea2956d3494fdf7b4a6a44cbc7e6161fe740629b36e80a0a20cff6e76108d592f15b73478ec5164f537
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJ8d8:bgGYcA/53GAGgIvF7ad8
- TLSH T1D31353386FD62932D37BDFB586F691C6B975B8223D16980D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3480-8-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019cb8-13.dat CryptoLocker_rule2 behavioral2/memory/1188-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1188-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1188 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 2026-08-25_83cd8de25cba0350c41a32a4fb889061_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 3480 wrote to memory of 1188 3480 2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-25_83cd8de25cba0350c41a32a4fb889061_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3480 -
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:1188
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 44ab748d80209ed3749000d2b4fb272cd79d8786cd8266a9ebfc5d1200c4e790
- MD5 7dbfe53f902280ff5ff2ec51975333bc
- SHA1 761c76141fdbc6b1a004ad46601b036ae404eca0
- SHA512 8e8a0e168cb1963d0913b61b9dfa933b66c78ea8e49afb441b7c6427cd36e39cefe75cb63bf9310b34433191f5873e714a675d921256a5e4a78d9ff3463dc87f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJ8dRI:bgGYcA/53GAGgIvF7adRI
- TLSH T1771353386FD62932D37BDF7586F691C6B975B8223D16980D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH