Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 23:41
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe
- Size 41KB
- Sample260805-3pgbcstwcs
- SHA256 9aee17866b2daba066961460695379d9c0e13c7503eea09ec2ea2c558900a8c2
- MD5 f7e783cb1cb87e1af2e56c94685cb50f
- SHA1 32770b7882f020d0b55670bc239dbd6a952620fb
- SHA512 4269e0c3421fb6cbda3f06b4e506bd4581dbfff4016be276696c2fb08672daf6c82a417f0480bc718ffef3a64da53a8f6858cd2354cb4777e4ebb3de64407ea7
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCo:bgGYcA/53GAGgIvFV
- TLSH T17A1374387BE62972E37BDFB586F791C27975B8223D16880D44CA53844833F65EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4636-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000011394-13.dat CryptoLocker_rule2 behavioral2/memory/4112-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4112-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4112 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 2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_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 4636 wrote to memory of 4112 4636 2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_f7e783cb1cb87e1af2e56c94685cb50f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4636 -
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:4112
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 ba8829dbb11b1c02f0a2a3feed4d10265a2789a7d666d2c994ffd60bb889f6ed
- MD5 ff5fcb4562d8280cac8cf58cfe91d734
- SHA1 e8f1fc7edd43a73b0a4a617fb6fa0e034f2c20aa
- SHA512 422314b740fe844a28982e2b3810cb9dff32df3f6de08556e012d6b04544aa5d5e9739427e21a5019e8b4ea8520688718ad929ff5e7be260f7b352ed9eb00891
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC5:bgGYcA/53GAGgIvFc
- TLSH T1F81374387BE62972E37BDFB586F791C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH