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, 15:32
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe
- Size 33KB
- Sample260820-symjmaeb97
- SHA256 b66629f356c649c7f8998eaa50e82d4313d10f4292c6f552c9a56b55d4f6483b
- MD5 550cdc342bcfaee40549a91ae62472fc
- SHA1 865436f462a0b286218928dc77078c90192b0dcf
- SHA512 2023142c875929943f5302ca7cb9e0e2f86d068ed37fd85ceb1563a8d69e2ffb102e0ba6439cf22daca6924a02a795f7cb1d74a3416622738ac76281d9ecf320
- SSDEEP 384:bdDl1ovmXAw9PMDREhi9OUSPlRxMc/cip58TfjDN0g/HNblX7QCOBqYlmX6:bdDOw9Uiaw8fjR0STX73OBqY
- TLSH T1DBE2A5387EE52972E377AB7185F391C6B874B9123E25490E98CF63440932F62FC6160E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x001300000001b1d0-13.dat CryptoLocker_rule2 behavioral2/memory/4340-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1804 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_550cdc342bcfaee40549a91ae62472fc_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 4340 wrote to memory of 1804 4340 2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_550cdc342bcfaee40549a91ae62472fc_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4340 -
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:1804
-
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 c51e04ae23c72fc56ec471c6a9f582cdf9a0b5fef58a6442ed944b8275b6cbf9
- MD5 032103d375c016e00bf750a054ba8896
- SHA1 732f3f56bff436c565f72e45deb2e6dd3c3c4a79
- SHA512 d741e7b41949b6d0dc53febea70982818c8a843c1afcd369cbb6946ada6ec5b05c3756253a41056a8ecae18c51987684afdcbc59e7b2c07f5ccc24f8774dd67e
- SSDEEP 384:bdDl1ovmXAw9PMDREhi9OUSPlRxMc/cip58TfjDN0g/HNblX7QCOBqYlmXm:bdDOw9Uiaw8fjR0STX73OBqM
- TLSH T143F2A5387EE52972E377EA7185F391C6B874B9123E15490E94CF67480932F62FC6160E
- MD5 SHA1 SHA512 SSDEEP TLSH