Analysis
- max time kernel
150s - max time network
147s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/07/2026, 01:17
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe
Resource
win11ltsc2024-20260629-en
5 signatures
150 seconds
General
- Target 2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe
- Size 46KB
- Sample260703-bndejaev3q
- SHA256 9f6cc6bcb202fe80a9aab8d320c391243f0682a750159ed94af43173e0a16703
- MD5 981326e860d948ee2e6eb025a9bfc0ca
- SHA1 b405e0bd60fb3c5e320f379976f3070fe4511a9a
- SHA512 3017f59afe07c8df662f87e581802eed5169ea32c41c732755994737c88dfdce761bab29b29cbb96a27e0ab65c79f0dfee4dee15fc9d2cbdd4e9830d1ebc5d34
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuK:bgGYcA/53GAGgIvF7EkK
- TLSH T1CC2321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2656-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b84b-13.dat CryptoLocker_rule2 behavioral2/memory/4764-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4764-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4764 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 2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_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 2656 wrote to memory of 4764 2656 2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-02_981326e860d948ee2e6eb025a9bfc0ca_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656 -
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:4764
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 229d2b7b9c3c1ec13ca326eb95543e63890181092ac0ad68804723bd888fe935
- MD5 ad5a878a3bab2a78017b643b3734e87d
- SHA1 121aec72097a7bd2bda38079176fd7f78a136116
- SHA512 da7679e0d503e436623c589a40a30c3c55dc94f3fd7bddebca0e0750a3fa1bf704d06fcd8191fe017df8d1cac5a6fd91de9f638fc65a2446eaaa1c64ad4ee074
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuO:bgGYcA/53GAGgIvF7EkO
- TLSH T1DD2321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH