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
08/08/2026, 08:57
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe
- Size 46KB
- Sample260808-kwxyksxtft
- SHA256 9f898f0ade736fcf8798d2e9b67670dd4ca33559c90526616af57b9c34650a0b
- MD5 37e3fc0dbe313d00fc8158058e314e4d
- SHA1 0bca648f4de6bc55a9f2b75ee69051d84d54fcaf
- SHA512 d236b5af2cd0b6d790111d5469ae6f44f3b0f7d3bb7606efa6c32311fcc1ea096266e5876ce3100a35aca971e0d081d11c615ce8042eca10f22c1c1e0ab5108d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEh2:bgGYcA/53GAGgIvF7Ec
- TLSH T1082322387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4600-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000016cdc-13.dat CryptoLocker_rule2 behavioral2/memory/2976-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2976-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2976 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 2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_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 4600 wrote to memory of 2976 4600 2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_37e3fc0dbe313d00fc8158058e314e4d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600 -
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:2976
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 cc33793a8e1e4a7bc303321f68b1043af19300ebcc159981c380fd5efe647e1a
- MD5 2c1e5c272105dc98175ccaeaa0c659e8
- SHA1 1186c8ef809cf929387a19230da8a7426a64281e
- SHA512 8605a2135bb1473fee959bb48fb048193ae54928d11d9601b3a7cd4cb010cd2db24b17e692b519ee5c019502da4bc3755ef5abd9458054b112b049b652b0c1bc
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhT:bgGYcA/53GAGgIvF7E1
- TLSH T18B2322387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH