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
20/08/2026, 03:00
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe
- Size 56KB
- Sample260820-dhj18sbb33
- SHA256 2e7c9853b3caa1575a9a9870a6c57d11d721af9a6920ebb2f7b8bef44f007d9e
- MD5 f8cf8364e21043bec053cdb824ff268f
- SHA1 47fec9fc6ce4aa24dd71f00dec17de84730d92c4
- SHA512 81c223f2e4c5d5a6949a6a10d73c99a786b66716e0942a13c29ea6d72491c823c87135fd1e19bb8acb755d55ee807b23191f1d0e142a942a58ab0ec86022138b
- SSDEEP 768:br74zYcgT/Ekd0ryfjXaoP+NSBz1EXEl5EyKaIZsIunqpeNswmQaT:br6YcA/X6GLadNSBBSm5zI/W1G
- TLSH T14D4308397FD62A72D3778AB195F790C3BD3AB82239158C0D44CE53484933F56AD92A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1216-0-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1216-3-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b86d-14.dat CryptoLocker_rule2 behavioral2/memory/4748-19-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4748-27-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4748 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 2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1216 wrote to memory of 4748 1216 2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_f8cf8364e21043bec053cdb824ff268f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1216 -
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:4748
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 56KB
- SHA256 401ecbd3e9e3e474700ca65e11d1c87c38a7641dd3f22ca7ff5cf923658ce46d
- MD5 e3a6a3c0599ddd38443fb236ee4b3f5a
- SHA1 981d5a3cf196b63e0ad6b48dd4bbdc5d322faed9
- SHA512 cb0f187ad840158d314a8d37e5caa1ccc0d5466e02a886cbc1cc89d651d7e615ebf9295494f109db17edb25972d58bb4906bfe6b6e9278394185b10e5b51bf4b
- SSDEEP 768:br74zYcgT/Ekd0ryfjXaoP+NSBz1EXEl5EyKaIZsIunqpeNswmQah:br6YcA/X6GLadNSBBSm5zI/W1g
- TLSH T1ED43F8397FD62A72D3778AB195F790C3BD3AB82239158C0D44CE53484933F56AD92A0E
- MD5 SHA1 SHA512 SSDEEP TLSH