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
03/09/2026, 12:37
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe
- Size 32KB
- Sample260903-ptplmsgq9v
- SHA256 450cc90ed443de3a0c363e4af3c0f987f8c403146807a2bcd7d753299ec169e4
- MD5 4a683869ffca55572d28dede1c95cd0e
- SHA1 ea02130d758c26baaed3431267347b70b65b3cf8
- SHA512 214b3d9d5ca4260494636f1dc77af8a8045a5dd28c796dd4ef204b7e316b98734f26ac769f00f9ea6974301d75d53b4b13361b35be571ba2335b918a9197e87c
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ/Tl+bltoGozz:bA74zYcgT/Ekd0ryfjQRSlwltEzz
- TLSH T155E2D9387BD72D72D27B9EB585F790C6B93AB8223D25484E58CF23848D73B52AC4144E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4372-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/5048-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5048-26-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5048 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 2026-09-01_4a683869ffca55572d28dede1c95cd0e_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 4372 wrote to memory of 5048 4372 2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-01_4a683869ffca55572d28dede1c95cd0e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4372 -
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:5048
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 32KB
- SHA256 ade1bacd0a3a6035bb97c54a3f71288f13fb71ed252029cc08a4598d8655760b
- MD5 185a8741bb7d5ce0da7776bb9c0a7045
- SHA1 811eb4f271d2674acb0ffd6fda8e3f41ab6703d8
- SHA512 4f84bbb467f45e323418597568938cd947218d0bc95d43fc99421a4c2f61ab3fe3e1716509810a3f88b86947a0f52de5b8589c8c16d3ee1ec4e29c00f7ba7928
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ/Tl+bltoGoz5mVYQ:bA74zYcgT/Ekd0ryfjQRSlwltEzqf
- TLSH T1C8E2D9387BD72D72D27B9EB585F790C6B93AB8223D25484E58CF23848D33B52AC4150E
- MD5 SHA1 SHA512 SSDEEP TLSH