Analysis
- max time kernel
150s - max time network
146s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
11/05/2026, 10:57
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe
- Size 45KB
- Sample260511-m18a8af13s
- SHA256 e6f19d59e90db9b7bb2bbf6d553dcb0e7a340122467710ef80c4faf5fcf3fce0
- MD5 833137080836cb69d009bf152ae7e8fd
- SHA1 938020471978fd9090a64b6b666b77fce7657ece
- SHA512 c49bcdeb9d3351e75fb1b2ab445d5672d284196b92990fc367f1b3ffb53f1d5c42771ce7bec2fec0e38755d0d592932a5c9f66ab1816243f86c1f522d258f016
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhjd:bgGYcA/53GAGgIvF7E3
- TLSH T1132330387FE62932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4896-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000002a10a-13.dat CryptoLocker_rule2 behavioral2/memory/2144-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2144-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2144 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 2026-05-11_833137080836cb69d009bf152ae7e8fd_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 4896 wrote to memory of 2144 4896 2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-11_833137080836cb69d009bf152ae7e8fd_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896 -
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:2144
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 833988a9e66ff10576a5f6a72d24c7ce88ef9b50c68f2ed847ec41ee261161de
- MD5 e06774227e1c53c8014f7e75fa9f5c6f
- SHA1 4302393edf4a2372e044335f3634f736d0bb0336
- SHA512 ad6509e973345d88ae1965e161ab3961b4acbf38d62a2fc128e479dfd800a9553429055f11f62853c5349ae0f102674a920900014367bd0e510dea4609204b63
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhjN:bgGYcA/53GAGgIvF7EX
- TLSH T1CF2320387FE62932D37BDFB586F691C6B975B8223D16980D40CA53444C23F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH