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
09/08/2026, 04:07
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe
- Size 46KB
- Sample260809-eprkbszeja
- SHA256 bcd1ec6702852630ac12b29f213f1f512903178a2dc8987e63cf6cb71241b8a6
- MD5 79d1bf4fa40c49b75d7ed991917741bc
- SHA1 2fe63dab79ce565f65b21109f5cce4f17c0087ee
- SHA512 a2e13d72ee1bc15cca9189e5b1eb3142768dd9fd279f5b102ce83d1cc5558f449eaf50dfe83a635944eeaf7d46e83dd2ee1c8cd3161f52c9c0e6e38a42fd1441
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhS:bgGYcA/53GAGgIvF7EQ
- TLSH T16A2322387FD52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3912-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b871-13.dat CryptoLocker_rule2 behavioral2/memory/4712-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4712-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4712 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 2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_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 3912 wrote to memory of 4712 3912 2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_79d1bf4fa40c49b75d7ed991917741bc_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3912 -
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:4712
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 437d99943fd6b4d45885a534494f1c594e22507d15d0b9e48a9c5ea2ba0a3185
- MD5 0965054eadd7134dcae37145834ea07a
- SHA1 e35e93029d3e105447dbbd6e7201f27dea353be0
- SHA512 deb2b4105c2eb2bbdb7a9f6afa663db491822388d11c9c093bbd59dd16ff697dc0e59e60003b01b0915d21a083d1d8e241adf709b712137a15afdf0645df2703
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhS:bgGYcA/53GAGgIvF7Eg
- TLSH T1132321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH