Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 10:29
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe
- Size 43KB
- Sample260804-mjk5cscp71
- SHA256 35e680b4161a1a6973c372f471d2ac557bed1a03f39530cbb3e072b35d538623
- MD5 a13e74ad2569bfa7e6f357c387358b8d
- SHA1 3a05fa5f80a24fbbdad90946dbdb01653db3d3dd
- SHA512 a5f28985d7aafc21350456ab9ffe82e38ecd3df8a28431b6c5b65bd0a5f78e31c49e43e5d2a45004759673eed745e9acb6a3d648e00d0734b9aafd189695dce8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJYUa9:bgGYcA/53GAGgIvF76d9
- TLSH T1371344387FE62932D37BDFB586F651C6B975B8223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/552-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cdf-13.dat CryptoLocker_rule2 behavioral2/memory/352-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/352-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 352 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 2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 552 wrote to memory of 352 552 2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_a13e74ad2569bfa7e6f357c387358b8d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:552 -
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:352
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 43KB
- SHA256 492a56cef859699ef3f9213edb5fbb6ee1b7919480dfff9681f506b9f2342c5b
- MD5 f40eebc6d0eb59b0b4ecad0f467bfc19
- SHA1 207a27a33ff32ab30f2bf40e280e5694cecfdca4
- SHA512 059e404e2c3c3e2deef6ce79bfc82756679e53a50fb34a9db31222bb94752108774291719c399ad5d84371233d1b97531d832f516281d96c17dedee1e9c9891f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJYUaMi:bgGYcA/53GAGgIvF76dMi
- TLSH T1251344387FE62932D37BDF7586F651C6B975B8223D16980D40CA53444833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH