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
20/08/2026, 01:12
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe
- Size 35KB
- Sample260820-bk2b7aag52
- SHA256 c550dbb4cb1a9b3b835d09c9a49a3bdd3305eebc95778822f58dbc5e09fb55df
- MD5 4871e2034c65feff6e81d2011a2dbe91
- SHA1 45765bf9829cc0aebf7c29a0e922c7e61ca46625
- SHA512 85c3dee58b2d513f7248410a8d931af94f3c46a741c0b821be41a216713593336e3a1a41e601ff1d02dec694a619dd90e30a58bbad0e423bd1ba81db3ba1802e
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOFhYI+:bG74zYcgT/Ekd0ryfjZ2
- TLSH T16CF2E535FBEA3826DE37AEF4A1F650B1673F78187C1074CE48ABE74C84B2651991C40A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/5888-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5888-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b871-14.dat CryptoLocker_rule2 behavioral2/memory/4800-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4800-27-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4800 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 2026-08-20_4871e2034c65feff6e81d2011a2dbe91_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 5888 wrote to memory of 4800 5888 2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_4871e2034c65feff6e81d2011a2dbe91_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5888 -
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:4800
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 35KB
- SHA256 7b1bdc088caa30724846cd6ed36ba386bdab95b634b09c31740e21ce2a2ded9b
- MD5 7b3ce19538a2b392346b1377f08627c5
- SHA1 c88d7ba5faf3696970cf1cd5c9e1a7a2f7114010
- SHA512 1f05432ea1a4610b79d69131d49f3943c35d14792838fc2d8b3a7e9f678838c8ca3dab54f91e495a1bc99d7e7fa91326a6d2503d3361486b59094d93b44e8382
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOFhYIf:bG74zYcgT/Ekd0ryfjZX
- TLSH T1A1F2E535FBEA3826EE37AEF4A1F650B1673F78187C1074CE44ABE74C8872651995C40A
- MD5 SHA1 SHA512 SSDEEP TLSH