Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
23/08/2026, 01:26
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe
- Size 29KB
- Sample260823-btlyvs1gnf
- SHA256 7b6c10f870ece2135556d2461e8d487df716d60a622dd42af605bf071e1cd3f4
- MD5 bd216a79fda1bbeaaf9a084f9ca4d7ef
- SHA1 c792d798adc6359297bcf82255650b2656ce4d7b
- SHA512 da643257dce31b6a31b50dde72afa65866ef56adb4237282f87fcffdf6c15544df940be1e5f35a8c7c2dcccd7bcf9f8c08048c51d82b48d1596f0d4532122cd8
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HqO4//u:bIDOw9UiaCHfjnE0SqO4u
- TLSH T1B8D2E839BEE56C72E177BB7054F39286A979BD123A24494F98CF73880932E53BC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4128-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019cb8-13.dat CryptoLocker_rule2 behavioral2/memory/4764-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4764 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 2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_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 4128 wrote to memory of 4764 4128 2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-22_bd216a79fda1bbeaaf9a084f9ca4d7ef_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128 -
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:4764
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 29KB
- SHA256 2d79776c233ebd68c7028f556a388b336b98520d5731e973119205c486dcf47a
- MD5 ce719d12da86b9c9aa14c8d463c10e7a
- SHA1 5b32106e30cdf671872f4060d273fb20910aa23a
- SHA512 caa465498aa80ffdc1dbfa132b8cbc7a7e1da8cb4fb301876a50ab4f71ca4787b4e4f4aee166ced918dec9f18cda31219400873793a6359f08bcbd86bb9fe1e2
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/HqO4//+:bIDOw9UiaCHfjnE0SqO4+
- TLSH T1B3D2E839BEE56C72E177BB7054F39286A978BD123A24494F98CF73880932E53BC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH