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
04/08/2026, 14:56
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe
- Size 46KB
- Sample260804-sa7jwsgr3t
- SHA256 b87d555e0ae349b199362819f07ff5b3672709874f4fbe695a5a47b26e63382e
- MD5 934636088748de1d1f850bad1e005563
- SHA1 a05dc819355c57b971a8de176140b243c2796063
- SHA512 7d65026aeda5d1034ccaae684714b357aa328fe3cc21113945a4529b235a8d82e258f02489405646b20c7044658da2e7457329ec54e8583e3ad38a81cbd0912e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ16J:bgGYcA/53GAGgIvFW1o
- TLSH T1B32344387FE62932D37BDFB586F691C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5108-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b315-13.dat CryptoLocker_rule2 behavioral2/memory/2596-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2596-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2596 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 2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5108 wrote to memory of 2596 5108 2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_934636088748de1d1f850bad1e005563_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5108 -
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:2596
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 9736b6fabaa95af99e2c3ffa806fd07686102807fef6cf4ae9a419de2ad4785e
- MD5 7c388f6183959c890f26ffd6a2296653
- SHA1 2b44c7e30034edd76679c2eb631b7c5b1f32ea27
- SHA512 8cb78894d6daad995dc20351f61ee7e0fae2366ddccf474687b79ae3b2a5cde6ca760f923d7735694f041424eadeac42e6ae7070b10f0425bbbb97a108ee3828
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ16/z:bgGYcA/53GAGgIvFW1Cz
- TLSH T1ED2344387FE62972D37BDFB586F691C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH