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
20/08/2026, 01:13
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe
- Size 25KB
- Sample260820-blejtaxdrf
- SHA256 964df89b30e56ab1704f81ac3e3615091d644a3b35e8f8b16dd31437c7c726a3
- MD5 329fb9d3ba7abaf05729f7b88e8aabdd
- SHA1 c3a977a494febfcaf0b139d884bd95c7b395aa67
- SHA512 2ba955f74fe6bd299b7e439bc9ef323598d2776d766a7248c71bbfb6a73a4ceac30e019b53a51f636e93fe9685ada329d84e42a0044a692ebda5444c7ab6a161
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4Hv5:bIDOw9UiaCHfjnEv5
- TLSH T149C23B36BE6A6C22F0773B7014F7925598797E413B38098FECCF77991A74A62F812109
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/944-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f00000001b1d0-13.dat CryptoLocker_rule2 behavioral2/memory/1760-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1760 lossy.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 2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 944 wrote to memory of 1760 944 2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_329fb9d3ba7abaf05729f7b88e8aabdd_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1760
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 26KB
- SHA256 a32805c188b3269ffa254cc9012fff920af52316fe252b024274e43ed2e8da64
- MD5 a4a408715f6fecb651b01c813c6c25d8
- SHA1 4b464d5e4c542baa0f216b6301284b169fd24686
- SHA512 29889443d311aa3bf99a5c9f9d3825409929cde3d245a0ae96b2d57bd1dbbdec98360a70447a805ed2f885156b8493160d9c1a2f75d201fc449d1e62fd1f8e18
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4HvS:bIDOw9UiaCHfjnEvS
- TLSH T184C23B36BEAA6C22F0777B7014F3925198797E413B38098FECCF77991A74A52B812109
- MD5 SHA1 SHA512 SSDEEP TLSH