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
20/08/2026, 15:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe
- Size 35KB
- Sample260820-teha8styas
- SHA256 e1d97661f99353ae191a0a8a1bd7a3716254cddf0f496865e54d19fd9d5e01db
- MD5 1630ef2b4842683801eb882497971d69
- SHA1 66c8b9b0fd66484acd607d6b8563abbedbedb1bb
- SHA512 7d17e73bdc7405cc7f176766de10928cd81f8d8214fb26eb554ca8795f6243411020f053c66649efc2b7786d5ca5b65da8a8fe782a3ce8668dd927ca3a5627eb
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YjyAFkt5CG7X:bA74zYcgT/Ekd0ryfjLzViYuAOr
- TLSH T150F2A5386BD62972D37BDEB595F7A0C2B975B8233E158C0E54CB23884D32B62EC5211D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2836-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c5aa-13.dat CryptoLocker_rule2 behavioral2/memory/4604-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4604-26-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4604 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 2026-08-20_1630ef2b4842683801eb882497971d69_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 2836 wrote to memory of 4604 2836 2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_1630ef2b4842683801eb882497971d69_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836 -
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:4604
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 35KB
- SHA256 e545a3727a03c86dbf7c6038ec6b619d1f3d0b3fde0a9e449a51bc028b12b1c9
- MD5 6f05bf6fc82c77287aebd8554567ccce
- SHA1 7f29718d361ea508e2c5fe223175f38a6ca49757
- SHA512 b1fee71a4452dd05e4e743db6114e34450178dd156e65093075a03186b731536c4ce7bee5a345af26e76442060a95acf513dda34333a5c9dc4d91a91e9aa451d
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YjyAFkt5CG7eO:bA74zYcgT/Ekd0ryfjLzViYuAOj
- TLSH T156F2A5386BD62972D37BDEB595F7A0C2B975B8233E158C0E54CB23884D32B22EC5211D
- MD5 SHA1 SHA512 SSDEEP TLSH