Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
08/08/2026, 14:34
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe
- Size 4.6MB
- Sample260808-rxqzzssxcx
- SHA256 4ecf74edc61cce0d62082f33b7c853bd79a9c7af43b36bdae13f8ad2757ce611
- MD5 58d461d57708c819e5d69d4650e2a414
- SHA1 133b582680015503798d42962c1753b17fdfba57
- SHA512 1928030fc7746fde1122c97d0b2908bb46c65531807044fdacfb41f5466e7202b3952f13ea5a2c282f87b01e9c45021f3433b84795a0c925411c8cd65d3a1f5b
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTN:w/ZFIjBzF/ZFIjBzPEUusN
- TLSH T144363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/752-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000011377-12.dat CryptoLocker_rule2 behavioral2/memory/3324-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3324-25-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000b000000011377-12.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 3324 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 2026-08-08_58d461d57708c819e5d69d4650e2a414_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 752 wrote to memory of 3324 752 2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_58d461d57708c819e5d69d4650e2a414_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:752 -
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:3324
-
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 c65991f1edf74fff54436f572cf73b7a75f80252b7a725b4bddc24c4c9120091
- MD5 5b742a653e1a9a111439a898bf644232
- SHA1 7cdd30837d4834f7664122232d94da29ea705d5e
- SHA512 16a98883bbc4fcfbb146c460b8c2276622000f41efcfc5bd25339b325d5f1b04cb8c808e3f5c2e2b6d324cb75b3957f355ea97ae544670dbd762a10473364045
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTQ:w/ZFIjBzF/ZFIjBzPEUusQ
- TLSH T1CA363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH