Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/07/2026, 21:47
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe
Resource
win11ltsc2024-20260629-en
5 signatures
150 seconds
General
- Target 2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe
- Size 46KB
- Sample260704-1ndsqset6w
- SHA256 90eb821e8ef91929b2a3bfe0c3a6f5c5f70c6d363a19c0a0b9e80bb84bd697d4
- MD5 b5090c196903cf10ec7d87d1ec2e9dea
- SHA1 956eaba7724d05435f32d9236b36cecd8e6f4918
- SHA512 8b1852b4e0f64fe1228d07819970f0e2e410aaffb82759284025db50f9c06c4149124311827813c63b273d1398034b315244062d2f154a0dfbb8f234b0577fbe
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhqt:bgGYcA/53GAGgIvF7E+
- TLSH T1A12322387BD62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3864-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001b586-13.dat CryptoLocker_rule2 behavioral2/memory/1492-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1492-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1492 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 2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_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 3864 wrote to memory of 1492 3864 2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-04_b5090c196903cf10ec7d87d1ec2e9dea_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3864 -
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:1492
-
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 fd746ea46b262aed4149b9e6e96cfffe1fb981506a797995223c8d95a7ee87b6
- MD5 679db96a5f981781b0ef729d0da01214
- SHA1 017aeef8166dd3fe92218b0bf5cc3af25d9c6c15
- SHA512 f90170d09674447cd408c4b99ef4d7f2ad949eee837c02a46276a03d771bf842be26af5631c0c309cc4103fed83e95daf0089a627ef5eb8b728212641a5ad836
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhqS:bgGYcA/53GAGgIvF7ER
- TLSH T1B62322387BD62932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH