Analysis
- max time kernel
150s - max time network
153s - 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, 15:22
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe
- Size 29KB
- Sample260826-sr21qs1erc
- SHA256 a16698a0da619e624369f14c98b2cec69871dca4cc46ceb4f57eaff7fca2f9f8
- MD5 9fedf7f3c0b7c0a6b4a94aec1e027b04
- SHA1 476d42eb9b7c1bf3728eaad289306585648066f8
- SHA512 ded27e8b876491be47846eb8edfa979bbe4915c8bbea80a82489ec1f65123b9370d51a5515c79f4855ddfaf09c9cb381551babd6df64d50796c6e3e2f22de5c3
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDz/EKazI4IYI:bA74zYcgT/Ekd0ryfjLz/HGfIYI
- TLSH T187D21B387BD73C72D1779EB555FBA182B83ABC223A254C4E58CF3388CD72751A84254A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/924-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b1a4-13.dat CryptoLocker_rule2 behavioral2/memory/4980-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4980-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4980 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_9fedf7f3c0b7c0a6b4a94aec1e027b04_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 924 wrote to memory of 4980 924 2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-25_9fedf7f3c0b7c0a6b4a94aec1e027b04_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:924 -
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:4980
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 29KB
- SHA256 34a432a8c6ad3f260db2d58c91cfca2e62a5e6da3cdac20f1ce65d192d812638
- MD5 7a8a75eb63651b3bf693956eda056b7a
- SHA1 bd02ade1e0b0e595de50df758d8ac4ec5b19cac6
- SHA512 62ed614b14d06ea464fb6d36b10d46d4ce8ef41dd4d74394e15e4e8032976b33192e9ade5d7727b5a626f941db167e6d9824d63e7ef99a1992e3fa7889579f1c
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDz/EKazI4IYH:bA74zYcgT/Ekd0ryfjLz/HGfIYH
- TLSH T1B2D21B387BD73C72D1779EB555FBA182B83ABC223A254C4E58CF3388CD72751A84254A
- MD5 SHA1 SHA512 SSDEEP TLSH