Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/09/2026, 10:32
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe
- Size 33KB
- Sample260908-mk1ansxvbz
- SHA256 af8c164e94d485448d0b53430691878e6bd1c6db0104a51b17ea966cc181bab2
- MD5 f303256ceabf0eb5900c84d33c0ff89d
- SHA1 8e35551599138303c26d81eb8557d674ff0aebd7
- SHA512 fd1d214d631f37d4093fd2a870b16926053a8b29c0004f55d1a5870b50eec9b366ff48e3f08b64dcfc7c4c3b0ecf494723cb0f7c1486eec98dd0b384e1535f32
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HKr42T3lJ/1cwve1nuw:bIDOw9UiaCHfjnE0SKrzBhwn2K
- TLSH T16FE2B83C6EE56872E2B7AB7594F792C2BC74B9123E25484E94CF63850932F12FC6160D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3024-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000243cc-13.dat CryptoLocker_rule2 behavioral1/memory/1332-17-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1332-19-0x0000000008000000-0x0000000008009000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation 2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1332 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 2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_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 3024 wrote to memory of 1332 3024 2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024 -
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:1332
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 33KB
- SHA256 b72b9bb38908367c908893029b73b19a278132b77d40b77175c7a4b38ea4512c
- MD5 33580efb9d1d5a6e3b292dec2b7c7dc3
- SHA1 79799bee494341057a613ab346541b7f3a165ef4
- SHA512 6ccf34e2fe21f99df396abb33656b75f02f36a4b6c5305e3b963e22c552d70af095baa288f4959c18b9998848a9ecd54f89524e1fbf6f791b6d98f8162777e50
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HKr42T3lJ/1cwve1nuR:bIDOw9UiaCHfjnE0SKrzBhwn2v
- TLSH T135F2B83C6EE56872E2B7AB7595F781C2BC74B9123E25484E94CF63850932F12FC6160E
- MD5 SHA1 SHA512 SSDEEP TLSH