Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
22/08/2026, 08:16
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe
- Size 4.5MB
- Sample260822-j6a15asera
- SHA256 98feb88a4fc1dee19e9ca6907685032bc3c49ddc660249b1fddbc98da4193bc1
- MD5 aca63cc83e5691b4eebd54d3c88fc822
- SHA1 69726a059899b87cdc95500aa50af73121c8894f
- SHA512 ef708741bdab898b3a40536a8c4c69fc40f3c74c7ee5c7edd7763f9076a01ecc9498b1b145b307163848e3c684c181d8650fd43e093adeb9a15b9816dbecd6f6
- SSDEEP 98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTq:g/ZFIjBzF/ZFIjBzPEUusq
- TLSH T164263C5FA8E650A4C8EAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5408-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e000000016ccb-13.dat CryptoLocker_rule2 behavioral2/memory/6992-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/6992-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000e000000016ccb-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 6992 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 2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_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 5408 wrote to memory of 6992 5408 2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_aca63cc83e5691b4eebd54d3c88fc822_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5408 -
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:6992
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.5MB
- SHA256 2d5432b3eac2d4ca1b07d8cd6dea95ecf36d95922bc33513836b9dec7e61fe2c
- MD5 5fdafdd2003b0d5143ad6871f4b4ef10
- SHA1 e8eafcc6d046737acc343ee3a4179d244aad2c19
- SHA512 d742e8eef959f87970457544b633f9df734b43c33ef1093980eaafde306b5004b0ec4dedcdf9b343483599cc09ece2ebd036ca866a62b4c016af3c79bedcd7d2
- SSDEEP 98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTC:g/ZFIjBzF/ZFIjBzPEUusC
- TLSH T1FA263C5FA8E650A4C8EAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH