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
07/08/2026, 01:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe
- Size 46KB
- Sample260807-cd8claem6y
- SHA256 8eab2deb639e03d70f14a5618d55046a2cada1d388e9a21053f59bcf2c87206e
- MD5 03c8f1c1fe18af2a60e8a2ceef05ef86
- SHA1 3cf18429a5ce5c912b252730080bd548daed6724
- SHA512 551220466cc388bed05d1b56314d098619e9f674f38be0e5bc3e1503acc380947353e89365dfdb4f90b3bf6a99b4f97ad5996230eb8ef4490cf03743a721d374
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEh3:bgGYcA/53GAGgIvF7ER
- TLSH T1B92321387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4572-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001b315-13.dat CryptoLocker_rule2 behavioral2/memory/4748-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4748 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 2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_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 4572 wrote to memory of 4748 4572 2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_03c8f1c1fe18af2a60e8a2ceef05ef86_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4572 -
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:4748
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 36fffa8d5450c9211bac8d813f1a3112d150790a0d45e8451c9e6950493f1f5c
- MD5 1b31a6b5327e536c79bc1c669e59db91
- SHA1 47f66c0a144a8ff76c9a337ba52aedd78b47e667
- SHA512 f0dbc39e28628fe02d85f0c48bca7c6487a74aec3ed3ca53eb8fc61af28f3970accea7c4101a3aa96a603593cd41edda252acc7455b616aa3c98ab62ed7e3836
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhs:bgGYcA/53GAGgIvF7E2
- TLSH T1642321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH