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, 01:03
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe
- Size 49KB
- Sample260820-beh9esxcqb
- SHA256 475f86a996fe45e55397a2611dcac1bb620a195fa3d25951fd83104bea093c32
- MD5 cff00a5e2c9445844ae9a085834c4d0e
- SHA1 0f67ae781f8360b4235d81f45d4830d98a756308
- SHA512 719ceddcb9f1d1d91afe7b356e547025f35fbdbbaf6f19a9c07dd14c80c962310e6c949cdab29e4fefbd6ffb6e0c8e62ad3be018f99649891509380d4fa7c2ea
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoBcpb:bIDOw9a0DwitDkvmoib
- TLSH T1E833C83C6EE45872D3BBDAB699F651C6BC34B4223E155C0E44CB53850C22F27EDA261E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5936-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b884-13.dat CryptoLocker_rule2 behavioral2/memory/2320-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2320-26-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2320 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_cff00a5e2c9445844ae9a085834c4d0e_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 5936 wrote to memory of 2320 5936 2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_cff00a5e2c9445844ae9a085834c4d0e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5936 -
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:2320
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 49KB
- SHA256 f6f6904dfc17bc0e8a8e171c01552553a4efdc2ae2acfc2f1bb338bfdbd74a59
- MD5 1fe9a0595ee74e082b1f31a44a4bca59
- SHA1 72d34d9e98380350a285d47d1af0bb4aef8523fd
- SHA512 93340b45df268dc6720f31764e4de987a63448e096c2c9db1c978d715c8abd2bfa492303cb13957c4cd429c631dba6f130cf223cbd44977d24ce1796011210d0
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoBcp8:bIDOw9a0DwitDkvmoi8
- TLSH T13633C83C6EE45872D3BBDAB699F651C6B834B4223E155C0E44CB53850C23F27EDA261E
- MD5 SHA1 SHA512 SSDEEP TLSH