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
23/07/2026, 00:04
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe
- Size 45KB
- Sample260723-acpsrabk31
- SHA256 173e7b68d7601e4c6767bd2c3d3af63f371d58e354294f730fd44972a57f952b
- MD5 42b1516ca07b34902a15e53a237ffd4c
- SHA1 6d2f37bb087ff0aa093db0172edd11988e36d798
- SHA512 264b7bbd6bcbd03fec75449b7667917b48a22042b19a5e01fb3ef32a646c69f47066d0c3a3eed80d1d1fb6f3083422fe6453b081a5165bd4681ea68bba1d5ec6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTP:bgGYcA/53GAGgIvFS
- TLSH T19A2366387FE62972E37BDF7586F691C2B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3704-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000019ce0-13.dat CryptoLocker_rule2 behavioral2/memory/3776-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3776-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3776 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 2026-07-22_42b1516ca07b34902a15e53a237ffd4c_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 3704 wrote to memory of 3776 3704 2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-22_42b1516ca07b34902a15e53a237ffd4c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3704 -
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:3776
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 2a9956bee463452e68c83f05d9565b179ce61abaee2e616ab44dda1359ec22a5
- MD5 fd1ed258701b97bb752fc2823c593c90
- SHA1 f32cf75b67cbc41bb7ba5e1ee790ef8d31a2ac75
- SHA512 b5c4c6eb0795c0b924b27c484345af07cb62f6c303127ec9570ecfe5acb3c24e68f804b42176fc7dd6ec916f1d6ee08d1899e0a5b674cc65a1bd65fcdd10f45b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTc:bgGYcA/53GAGgIvF9
- TLSH T1252366387FE62972E37BDF7586F691C6B975B8223D16980D40CA43444833F65ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH