Analysis
- max time kernel
86s - 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
30/07/2026, 01:29
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe
- Size 4.6MB
- Sample260730-bv7xqaaa76
- SHA256 f41743e8ccd2fa9dd1ffab47786a29d8ed8f2f17aadbb0d19b135cdf52481029
- MD5 5a1f59cc8e9747f892c8c6f786319c0c
- SHA1 00f81132a4bc87559aa27fa30d95f8bb54a0305b
- SHA512 35f865b60e7a6d26db02a21c9982465fe4c8d0afb3e513df1e70bcb508263e3346849029862e292f04f5fe0ab665c97f581e00d2a5007cfa81500d0163000681
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT8:w/ZFIjBzF/ZFIjBzPEUus8
- TLSH T1EB363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4504-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c607-13.dat CryptoLocker_rule2 behavioral2/memory/4644-20-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4644-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000d00000001c607-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 4644 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 2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_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 4504 wrote to memory of 4644 4504 2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-30_5a1f59cc8e9747f892c8c6f786319c0c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4504 -
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:4644
-
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 3869f3fac34b145c59a6281f0942f0475f5a9e01cb85117d464d780a53b7b0b3
- MD5 1f992bebba7dfb7984df9a8f8b0b826f
- SHA1 2c2d363b0fbb1ee1d62a5dcf339518e13ecfcb8b
- SHA512 cc82124dec84099482437884d9b7efcdaa538a823e322565790ca2ca6a865be9680355559f403e9958325fdfd09b706a7d0370c3c04605c1c9c2e3ea9c90baf9
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTY:w/ZFIjBzF/ZFIjBzPEUusY
- TLSH T170363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH