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, 06:59
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe
- Size 4.5MB
- Sample260822-hsf5jsfm7v
- SHA256 724cf1bf288b934f52c73568d3671679ff071c76d801a4608fbf50690204bcf0
- MD5 bc7feda188e81caf625537e36e7b5985
- SHA1 0e3200f0b29701f7981ab729790939217a99023c
- SHA512 6c86241d3c0bbd26ffb1e33fa2089d97dd968e9bf5586575d9b4fb9138a7d3cbea39b8371df3e7697031a17fa9b14dd52d5b3f8c7e0615f8b4ba0effffda7e01
- SSDEEP 98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTc:g/ZFIjBzF/ZFIjBzPEUusc
- TLSH T1C0263C5FA8E650A4C8EAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1088-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000011371-13.dat CryptoLocker_rule2 behavioral2/memory/4372-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4372-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000a000000011371-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 4372 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_bc7feda188e81caf625537e36e7b5985_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 1088 wrote to memory of 4372 1088 2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_bc7feda188e81caf625537e36e7b5985_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1088 -
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:4372
-
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 1a51f5fac925e3989617701e988911681d1a16be651a475596d54938d1df2288
- MD5 d6c5d17a2bd612caa25324d771f52f6a
- SHA1 8b5d374f71c4ce8febf4fb4cf73fc8afe6debb01
- SHA512 ecce2d778f181112b79a5a12824da1ac313a6cea8a0a24e67b6ffefa448d8851b1fa99cd210d494627ecf46516cbb042aecb714bfa99c42dc9b5319649c56b26
- SSDEEP 98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTN:g/ZFIjBzF/ZFIjBzPEUusN
- TLSH T1C1263C5FA8E650A4C8EAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH