Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
06/08/2026, 22:42
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe
- Size 46KB
- Sample260806-2mxpwsvwhy
- SHA256 addd4ea3a2118374d3bf0e2896ebed3dc41c343fd25f0c50447f26ebe6510df0
- MD5 b41ffbb9756d31d5c93efd5bbea77f72
- SHA1 9f9ccd6a6c3b9f2d62220737a80d8bb6b1e16f25
- SHA512 2851950f99f2239671b5c657448750fff1bd94739e41330975deab2bfab972ae80baf55dcd5bf9549f3c37a7a2bc46a6ab729490e3308afa8e801a7c8116de62
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTc:bgGYcA/53GAGgIvFV
- TLSH T1A62354387FE62972D37BDFB586F691C2B975B8223D16980D40CA43444833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4628-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000019cc0-13.dat CryptoLocker_rule2 behavioral2/memory/2064-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2064-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2064 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4628 wrote to memory of 2064 4628 2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-06_b41ffbb9756d31d5c93efd5bbea77f72_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4628 -
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:2064
-
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 fa9cf6d1ac20ff2a1fe0272df965ee9c6fa3e32ea77571672af7bce5e53e5a31
- MD5 e9eb254f9f5eaef61f9d35b1313ed834
- SHA1 ebff7c6dc3914270c1fcc81b26a2ba2915d2bf6e
- SHA512 8b7a426a948bb14c2a7e32c9b76e41eb43d740c2f71ab472effe2c2bac5f6373328f4de7304afda58173b9336da8b04444a77ca37cdc3b09cb018f3c528a1585
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTB:bgGYcA/53GAGgIvFg
- TLSH T1192354387FE62972D37BDFB586F691C2B975B8223D16980D40CA43444833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH