Analysis
- max time kernel
150s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
19/04/2026, 04:33
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe
- Size 41KB
- Sample260419-e6l16shw61
- SHA256 7c9b564f78a63acad6e175beec53f89574d4f1d55082c5b49ec0727295451398
- MD5 31d58928b22367f08011d55896127849
- SHA1 b2493f041e664543b54fdd43b4c219147f3d4880
- SHA512 ba626d5cc70ae63c2e7a77995b99e7a06a11530150277ee5da1552456458621b8ff4b1584cbd65b62ef6f5550388b5b069e87e9185a56aea63f8094bdb6ef5a9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NCt:bgGYcA/53GAGgIvFWAt
- TLSH T1A81353387BE62932D37BDFB586F691C6B975B8223D16880D50CA53844C33F56EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3028-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001d00000002b12d-13.dat CryptoLocker_rule2 behavioral2/memory/4608-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4608-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4608 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 2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3028 wrote to memory of 4608 3028 2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-19_31d58928b22367f08011d55896127849_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028 -
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:4608
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 855177f126561340dd8544ac1a8987fdc41e0acf57b4436e6682c8252f6147ea
- MD5 97053a5e95f193ed2310f6580d192899
- SHA1 a6f8b10f245b136b9764230114cbc8fb28bfe7c8
- SHA512 de6629bb4134ccdde78de060cb5a0ee7b5791251c986424ed8701ce4f736974c35f0469152e010f9123cb16e7d8a1cd3bf1f61ac1c3aade143440404e72f5608
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NCt:bgGYcA/53GAGgIvFWAt
- TLSH T1E81352387BE62932D37BDFB586F691C6B975B8223D16880D50CA53844C33F56EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH