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
30/07/2026, 01:05
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe
- Size 4.6MB
- Sample260730-bftfsaap91
- SHA256 e0e5133b49feb1c11a066aabcecb1a615ad67fe1fd4b21dece5301f57af02f77
- MD5 e85c9b31fd8d94d46a9925cdae000cc1
- SHA1 f8997abb573dc6ebbcc1fbce656d34fcaed0dd6d
- SHA512 535daaa678820ba1312a6d6d120afa7665d880ec0b696fa6b15eb838cf8485baf51ca3a33f5b80b55f43cf909f71171d8c939dd351519926ce9d8c065478f273
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTf:w/ZFIjBzF/ZFIjBzPEUusf
- TLSH T1B7363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5036-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e00000001c4be-13.dat CryptoLocker_rule2 behavioral2/memory/2608-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2608-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000e00000001c4be-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 2608 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_e85c9b31fd8d94d46a9925cdae000cc1_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 5036 wrote to memory of 2608 5036 2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-30_e85c9b31fd8d94d46a9925cdae000cc1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5036 -
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:2608
-
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 91f8779f0ea2c6a333eb429895ca2e83079b7dc072a01227fdc77e0d05eeb913
- MD5 a73b719e9bca3ffca643deeeee177236
- SHA1 8ae16328f83407e7ff38b513979d7fb623d4b6d6
- SHA512 491f3678779fc69ccbb17e36f40346d7ae2bd51ed34b8aa430affaa9f904890703a275d708e2fffd31cea740070b74807911cad19616a6152d56451b7559d829
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTO:w/ZFIjBzF/ZFIjBzPEUusO
- TLSH T138363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH