Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
19/08/2026, 22:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe
- Size 34KB
- Sample260819-2ln2csvekf
- SHA256 eae6f24431de3f19ff928edd6c1a9eb50f4faa05076cd11e6845ec6c20e9a677
- MD5 71b262e63edbf0fc7e4fb59a58959da0
- SHA1 30989c0b0953d62ea35743dec0d7c52a2dbd98a6
- SHA512 883e1a04ac6ae5439e168185210e98a5edd8ead3cb698f369cdc5545b310f441ff25af7fc3be2e17cf896995f373b8ce69298110b6a816b0857700d7af7a0259
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOFcQ:bG74zYcgT/Ekd0ryfjZ
- TLSH T15FF20735F7EA3826DE36AEF4A1F750B1773F7819791078DE08ABE74C84B2641991D009
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1188-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1188-8-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000500000000053e-14.dat CryptoLocker_rule2 behavioral2/memory/1504-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1504-27-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1504 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 2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_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 1188 wrote to memory of 1504 1188 2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_71b262e63edbf0fc7e4fb59a58959da0_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1188 -
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:1504
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 34KB
- SHA256 74e7d57bad10e8f23d51bc948afa2a389bbc4f45873f510a2d52259175852cc6
- MD5 fba5e0f2a9e2f0598bed4e234435ffbb
- SHA1 69d8481ca05249fc77fdd17309a61992dd02646e
- SHA512 79f2112de93077c11d7ecfc8a4c65c5a6f9a112578ddef33595503f9d39a18f7a4a86a27acc13336a10c8d1a4069cb5cf40452889e60fbbbf0354c18a3ea5a36
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOFc+l:bG74zYcgT/Ekd0ryfjbl
- TLSH T17CF20735F7EA3826DE36AEF4A1F750B1773F7818791078DE08ABE74C88B2651991D009
- MD5 SHA1 SHA512 SSDEEP TLSH