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
21/08/2026, 15:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe
- Size 41KB
- Sample260821-tek25axtdv
- SHA256 4bd708f6a90943e216727cf269f08bda09a55d7b955c3cc6eb14c9e0aff7052f
- MD5 8e6fe0f718dec4ba869c3f80cfc50817
- SHA1 5f0a8aa18e446d5b996b6442eebefec4ac119ed0
- SHA512 b1ecf4dc9e696c0a43be2c84f445d968f73d6da7c4b2ae80b2ed2663c95703646221e53a6f512122624526c9b4472d28ad050e70a0aa0263baec9e7c2fb54979
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpazDPa/:bA6YcA/X6G0igEggevC/
- TLSH T18C1341386FD62972D3BBDEB695F791C2B935B8237A158C0E44CF13844C23B12AD9291D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4980-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/3520-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3520-26-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3520 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 2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_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 4980 wrote to memory of 3520 4980 2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_8e6fe0f718dec4ba869c3f80cfc50817_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4980 -
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:3520
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 f228cb6d148f2379ca754b96558dece140d8365d9030a58cc0f0e8afb4abef4b
- MD5 166ec1b916d09459860c9b5b5f50e2f1
- SHA1 9ea51f486541e06d8c4f48ed1f8658d7509bac8d
- SHA512 86bc2183af0634556a1b2772a1aa5456f4cadd47870fef84750b0d7a8667770f3912dbd7354278f774d6111839c1a2f1223f88bb9dbc0379bfc5854f9c40190e
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpazDPaew:bA6YcA/X6G0igEggevCew
- TLSH T1741341386FD62972D3BBDEB595F791C2B935B8237A158C0E44CF13844C23B12AD9291D
- MD5 SHA1 SHA512 SSDEEP TLSH