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, 14:19
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe
- Size 27KB
- Sample260820-rms2lasscv
- SHA256 eb82a435e8977c82b85cf9d6aff9bdbafa87ad23c17949874cdea9fd253315b9
- MD5 e17c5cbee557d8d7b8d13d90769077dd
- SHA1 c0ed60173310e478f52c81cce194b96aac4085c3
- SHA512 6e880b6b2ee4076e6bc28d5ce5cb02acd5b01d398d3fc0408daddebf7961b83927eb5cc58787bd1830c291ed085d770255f46578fc9e7dc323680954a3501763
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HNblXf:bIDOw9UiaCHfjnE0STXf
- TLSH T1F2C20939BEAA6C62E1777B7054F39246A8797D413B38094FACCF77980A71E52BC1210D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4900-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b86d-13.dat CryptoLocker_rule2 behavioral2/memory/4552-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4552-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4552 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_e17c5cbee557d8d7b8d13d90769077dd_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 4900 wrote to memory of 4552 4900 2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_e17c5cbee557d8d7b8d13d90769077dd_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900 -
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:4552
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 27KB
- SHA256 b7852aa3bae95d33b45bb2984c8fc794477881f1d68968e086b04ee347c79e56
- MD5 ee71b62e3752f9ce2525707f81900c8f
- SHA1 d4da8a56273199142862bf248745fc632dc2b7ab
- SHA512 8fa593d363bd9bc0a23f753e49495bf92635af033efc5405df960a52ea0dab71681c0be4db4e6b195a8d093ab17ecf1be84b45ae05135ed122e75780984504b5
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HNblX+:bIDOw9UiaCHfjnE0STX+
- TLSH T1C4D20939BEAA6C62E1777B7054F39246A8797D413A38094FACCF77980A31E12FC1210D
- MD5 SHA1 SHA512 SSDEEP TLSH