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
18/07/2026, 02:37
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe
- Size 46KB
- Sample260718-c359jadw3n
- SHA256 91f21cf533bc72bc1f7f2071f316c488314df9d5bff0165051bcbe994e87f847
- MD5 a841d3f77fa97220f3a979fcf1ed8d8f
- SHA1 d5e5c3f1780f1f1aadf5f34f07f71a4ebe5cdfab
- SHA512 cf2aeb95404b5b49e4056ca4433552085093a9d99df6f457227d83081f6b04f4db4ee57b5729e875ddd5beddfaf717ccb10373a43e30a0b4c552af3b98b862f9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhY:bgGYcA/53GAGgIvF7EK
- TLSH T1202322387BD62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1292-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b87e-13.dat CryptoLocker_rule2 behavioral2/memory/4856-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4856-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4856 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 2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_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 1292 wrote to memory of 4856 1292 2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-17_a841d3f77fa97220f3a979fcf1ed8d8f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1292 -
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:4856
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 2fd86bd6683685a43e6f355ee7f63ea203dd64dd5ccfda0cb22ca9b7f1aa2d8d
- MD5 7f4d3eda772fdce26a890e82c6be730c
- SHA1 f57ce4c34f454b2713f94a91977d86b34f2e8918
- SHA512 745751d4339ea9ca35ce3f9621b7309aaaa85e2235b2e6cf877f3800849f24cd5e2b3fc0931a48857a24cf2160787bb46b8609a4dabe08429a4a16a3edff9938
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhl:bgGYcA/53GAGgIvF7Ej
- TLSH T1792322387BD62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH