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
09/08/2026, 04:12
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe
- Size 36KB
- Sample260809-est5mahk5t
- SHA256 754d5424e852aa3b616e6f24f2db77802ddbd3344b61e921a043bfc9d7156ed7
- MD5 2111433101261d9b9a71fa08e674214d
- SHA1 144281c99501d6a9b32887a8d6b1213a9741968f
- SHA512 86af0ae460810ad35ebe02d02bf3a7371569938e9ea26bc2869ce61263c86c241ac14eda15de4bc2e909b748484a08446a419ffd6f07a1a513a80ae381f09c5a
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjV:bG74zYcgT/Ekd0ryfjWlNGvV
- TLSH T1DDF2D435FBEA3822DA3BAEF491F640F1BB3F7819791078CE049BE34C4872611995D509
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1268-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1268-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000001138e-14.dat CryptoLocker_rule2 behavioral2/memory/5056-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5056-21-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5056 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 2026-08-09_2111433101261d9b9a71fa08e674214d_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 1268 wrote to memory of 5056 1268 2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_2111433101261d9b9a71fa08e674214d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1268 -
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:5056
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 36KB
- SHA256 4350d4c75e3d2f89c03ed0a0ffa6e881090b75f1e5ec124ac9e6383133fda3e4
- MD5 e2e9f9239487933c975dbfbe5df551ac
- SHA1 f3427488a619b9e338587e6df42bb8a350f676ed
- SHA512 1105fdd8519e0a018173e8f37f0fcf2299e9379316ca10c51e23f79abf55940f740c77469932ab6653914b02155d902442442dc501183dae74e60c25c081e9e0
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjD:bG74zYcgT/Ekd0ryfjWlNGvD
- TLSH T11403D435FBEA3822DA3BAEF491F640F1BB3F7819791078CE049BE34D4872A11995D509
- MD5 SHA1 SHA512 SSDEEP TLSH