Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 04:48
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe
- Size 52KB
- Sample260805-ffbm7adf79
- SHA256 14541c4edef7013c65bc635596c6ab0789c6ca1d97f68d4b726ea027977f798a
- MD5 0303fe32b810ca1eb95c16354b994c0d
- SHA1 e637143986dd83408db7c3bb78a26070ca63e36e
- SHA512 1657cb7ed9918e16c24b9d040fb6d05d5847764b98a76726848b441b6ef3b49d5dfa932f429293dda0f759e6c3909e177bfeb8867476b9b388d8a78761899c46
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1yc8:bgGYcA/53GAGgIvFW17W
- TLSH T1C13311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5812-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000c00000001b1b7-11.dat CryptoLocker_rule2 behavioral2/memory/3920-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3920-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3920 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 2026-08-05_0303fe32b810ca1eb95c16354b994c0d_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 5812 wrote to memory of 3920 5812 2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_0303fe32b810ca1eb95c16354b994c0d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5812 -
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:3920
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 23fd41c246c07061b7e57c1b9a54639e0181f9feac9f54739b7c674fd0566109
- MD5 490c3cb3313bae7f515065873e7daa6f
- SHA1 a0316aa05f7c496747afc2f88131ab48ae2fc70f
- SHA512 60f1282c0965839e3340427770095e8a34ab549ca2be0290f1b7b7d8c06acb4bfd95b0355fa1f78cb9c8c699e51a429c497d5aa40cd09a1ec9bcf466cbb95da0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycd:bgGYcA/53GAGgIvFW177
- TLSH T1D23301387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH