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
09/08/2026, 04:05
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe
- Size 42KB
- Sample260809-env65ahj71
- SHA256 8edc4677b87a217f940b9ae3b222b27552cc176bda88d12583f0ba6642559a7a
- MD5 971809a89b97a463f595413b99e2d86e
- SHA1 95a5c2e456738911ea56d1535eb2993b0e917686
- SHA512 75ccdce3c7de633224b137462743afda13d76bc47451211a70a7fdd283e7a3e72e30311e16f6f920ad154bf40e6ef6fbb75dd7f27f477abd6cbc8a2bce2df4f0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCXc:bgGYcA/53GAGgIvFh
- TLSH T1C71374387FE62972E37BDFB586F691C6B975B8223D16880D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5396-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000016cdc-13.dat CryptoLocker_rule2 behavioral2/memory/4088-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4088-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4088 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 2026-08-09_971809a89b97a463f595413b99e2d86e_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 5396 wrote to memory of 4088 5396 2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_971809a89b97a463f595413b99e2d86e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5396 -
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:4088
-
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 89ce262883c1952155791f6331f15803d1277d14dae892b85bbf7da4b2ac7400
- MD5 db67613c08e02fdb08a9cec287b35bae
- SHA1 bed5cb3d83091a956476657817d693ae2843eb56
- SHA512 8c540fcaa55ce397e6dee4c9d0350fbf41d6fe5dc8dffc98ff675bc97c978908005201f546c2238dc910fcc96fcc63be24219629341b51b6e22154566d5902d6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCXc:bgGYcA/53GAGgIvFp
- TLSH T1361374387FE62972E37BDFB586F691C2B975B8223D16980D40CA53844833F61DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH