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
27/07/2026, 08:31
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe
- Size 42KB
- Sample260727-ke5bbsbr21
- SHA256 d2be22e0f5b7ce7f01b3c797fe3b2c5bf50570e7b03d7abef0fa8110b7608b77
- MD5 4298a4e2941aec08198a5d85f902e9ad
- SHA1 ae7f4b2a97b1d6126ba81fc298da8f32d97946d6
- SHA512 9ea56c8602250abbb34d26dc19ce0891302af5ac01605af56002d9bc6842ba0048728ca1bb5eb1eea960561093a3998762382d48d0f6771b33dc20393358789a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCng:bgGYcA/53GAGgIvF2g
- TLSH T1FA1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4856-8-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001b315-13.dat CryptoLocker_rule2 behavioral2/memory/2432-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2432-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2432 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 2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4856 wrote to memory of 2432 4856 2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-27_4298a4e2941aec08198a5d85f902e9ad_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4856 -
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:2432
-
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 60152c4f43c797bacce2ebe01edbcc47b6b716b116fcec16971caaf1f50d5bca
- MD5 3a86bca914c5444ccc244e1c04835828
- SHA1 bd3fc99102810e31582ad8a1d24b290577c2f171
- SHA512 5129332c69e306a7edf354932adac198c9f0ed1305c7215215ad3f9584e573890bb4e6800bc8f3388ce0241828b5e92a208aa745049df1f9b71ef67f49c3155d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCnCtO:bgGYcA/53GAGgIvF2AO
- TLSH T1CD1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH