Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
28/08/2026, 01:35
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe
- Size 48KB
- Sample260828-bzmscabe65
- SHA256 67f725336528d0c4ce5f6dc465bf334fbd8df346d249f724895299b844c9f08f
- MD5 f471aa07f6e7ae92f6d1da3e1d91dce6
- SHA1 f4b87c86953fcfb08760fbc71bba2abca6ce8c85
- SHA512 c025102b2246ebc251cc15b093fc4effe251eb484bbfc7f01ed5ac7cacf72fddb56f7349b21ab1a64184d97b5bc47a5d24a4cdf4678e66492ce624000c5e7ba3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJNM:bgGYcA/53GAGgIvF9v2ZIM
- TLSH T10D2344387FE66932E37BCFB586F691C6B93578223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2776-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/4864-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4864-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4864 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 2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_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 2776 wrote to memory of 4864 2776 2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-27_f471aa07f6e7ae92f6d1da3e1d91dce6_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776 -
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:4864
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 a72463a27ef82cd96330346103461df8a050000a0b93378d172440977f5d7644
- MD5 0bd21c9dbef793d1dd605baed0d7f84b
- SHA1 00d2859957da2664647aec66fe7f5212c0e3d1c1
- SHA512 7116f08b3fc4750e906f22b6a76a52729adb7b5b42c1f0ac5d05b39a38d63dbe38bfd2472e14ad707795cc1c582144ce55a6a754ea6671c387bb5f5f0ea27327
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJNQ:bgGYcA/53GAGgIvF9v2ZIQ
- TLSH T1EC3344387FE66932E37BCFB586F691C6B97578223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH