Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
23/08/2026, 04:28
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe
- Size 41KB
- Sample260823-e3sdsaej7y
- SHA256 90b38cc70589206dfb90cb5d1bdeb47be2c5896693293c3e6e7d6e3e30910331
- MD5 9717db2f21123d6718c2c3469f894b90
- SHA1 58827683f2e2aab5cb15b61c6aa7dc3f03173181
- SHA512 e0a63d0e86d5a920d038c2df9291a58aeb3ca1769c40e5db6798324299f5e9cf1ebe0a2a0c4df7bab28461a0a779dddfd1b2107c75fee2b8a4ea27b463376601
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCz:bgGYcA/53GAGgIvFa
- TLSH T1141374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1140-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00130000000118e9-13.dat CryptoLocker_rule2 behavioral2/memory/3004-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3004-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3004 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 2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1140 wrote to memory of 3004 1140 2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-22_9717db2f21123d6718c2c3469f894b90_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1140 -
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:3004
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 56086b50f38a5453081a8ca619e64484399a55872d599f294a0c8f1d4f911b06
- MD5 89c8fb73a4636615a77f32d0e185df5d
- SHA1 9413ac3939b6a17046c8bba882cdbf3ff11ea24c
- SHA512 d7a9ea22e05beca348d8143afec758c3ebab6bdfa15ea9c8543e42a45ed6554780a4892767bedc0449b7075c98986dcb4c557f39f96fa39a7560877550da44a5
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCi:bgGYcA/53GAGgIvFj
- TLSH T1C71374387FE62972E37BDFB586F691C27975B8223D16880D40CA53844833F66DC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH