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
21/07/2026, 16:43
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe
- Size 4.6MB
- Sample260721-t8np4seq6t
- SHA256 9a971286a2b76c535dac93c0488a673c94d3199538de6b8e8a7eacc1fd593788
- MD5 bb5ba8b27d54f998e258815209d9acf0
- SHA1 8e4fea6a10c05460984ab7e1ca5f84788bd30030
- SHA512 dbd84d66805cf887d5e0ad243553a0e52c60f13f6284b033a3964779f0d3efb948620a235fd5d56d16bfcf1cc30819ad47bc4841d58b4ac5089caffc321c7055
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTl:w/ZFIjBzF/ZFIjBzPEUusl
- TLSH T1DC363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/924-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/1928-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1928-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000a000000011390-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 1928 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 2026-07-21_bb5ba8b27d54f998e258815209d9acf0_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 924 wrote to memory of 1928 924 2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-21_bb5ba8b27d54f998e258815209d9acf0_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:924 -
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:1928
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 166cbb53a94f7c7b9d835b9e52006865da1dfe9bfbf6f016e4ce2dc82f58e75e
- MD5 8d7dad702592eabce77f7e308ee377b3
- SHA1 0d55b962cb296c2e6f4a5d54245916bbdeec7b89
- SHA512 b19302ff02776d3de920d410252320cee6428a60a73bc8aa107c7c6b1d1acad10a8a12d85ce5486e3c0fcc8070840752d751fd18e25ac72a156954bcd770c286
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTP:w/ZFIjBzF/ZFIjBzPEUusP
- TLSH T15F363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH