Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
21/08/2026, 03:45
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe
- Size 28KB
- Sample260821-ebk6dssbph
- SHA256 704de69b847e36c8f92f8c7259d300de2f4125e854740468bcb2c8d0ce400722
- MD5 ecfd1a0a2385dc96fbb77987b984c332
- SHA1 165327897c52141decce92388f427d47397f3ae3
- SHA512 d9f50a7cfe4a95d1a451b70bc811dff065529dea6bd5115c18f61ce31a15607aea6409e62a515d4d4af2d4b6534fcb9fe7d4f04b15f4769774440bfb9191b6fa
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HkxkAgvd7:bIDOw9UiaCHfjnE0SkxjgvR
- TLSH T1D2D2E839BEE66C72E177BB7154F39286A8757D423A24494EA8CF73890932E63FC1110D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4860-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000024323-13.dat CryptoLocker_rule2 behavioral1/memory/3972-17-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3972-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation 2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3972 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 2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_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 4860 wrote to memory of 3972 4860 2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_ecfd1a0a2385dc96fbb77987b984c332_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860 -
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:3972
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 28KB
- SHA256 575271d06b2ca247ab8cf0090db04c5c48932b3de11384c199d0f41ff45353e5
- MD5 c5e757f7215ce091ae1649147965c437
- SHA1 9aaeff0041cd83c8bd5959b5d76ffc72b97d8513
- SHA512 f8f58f5875d0ea8c4f11fb786f240eec31959af9f7de42b3490403746fb6f184c939fdb12e601dde69cba2c1cee34f50b0417085698d88315539135172b45686
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HkxkAgvd3:bIDOw9UiaCHfjnE0Skxjgv9
- TLSH T17DD2F839BEE66C72E177BB7154F39286A8757D423A24494EA8CF73890932E63FC1110D
- MD5 SHA1 SHA512 SSDEEP TLSH