Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
19/08/2026, 00:02
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe
- Size 45KB
- Sample260819-abftfsvthy
- SHA256 d981fb235672c97bb6f1965546776a61327303cc716a2628b8c93d021125dbed
- MD5 26251df99101c190285c0d9a58be145b
- SHA1 2cda98302b5c0da26c28b0d5e38d8ee843adb9a5
- SHA512 db09195da431e127cf768cf9144406694a04fb2285f153adf4a8e869d27b302d30042182fc427e4bf76df2887b5527c97ac138c725b54d5d4262f93c738498ac
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTm:bgGYcA/53GAGgIvFb
- TLSH T1132355387FE62972D37BDFB586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3280-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000245a5-13.dat CryptoLocker_rule2 behavioral1/memory/5084-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/5084-19-0x0000000008000000-0x000000000800A000-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-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation 2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 5084 hasfj.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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3280 wrote to memory of 5084 3280 2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-18_26251df99101c190285c0d9a58be145b_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3280 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5084
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 14b5c3b8869141120623f1bab558848686c63aa5fc69d93aeab775e6738dc9c8
- MD5 1da6f0fb0e3f6ecda1351cc94c9b0210
- SHA1 787b31df90d21f59dc592ce22ee871ebd1b325bc
- SHA512 9b9552503f79e54ccd8fc3a031334ba9a7e277c77047666bf2fa47df3b499cc6c0bd8f02546cb110040b4bd27e6d724bb2f84ff6022c6808639704cb43fabcad
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTQ:bgGYcA/53GAGgIvF5
- TLSH T1AC2355387FE62972E37BDF7586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH