Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/11/2026, 01:47
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe
- Size 56KB
- Sample261102-b7m33sgw2p
- SHA256 5db5b8a6c4f2a886e2f09479d0b787fe2a7344853b22d73d65593d13eb0cf657
- MD5 fcd6c8bbf5bc832d5cb30bb4fa11a467
- SHA1 6d686511e61b8b1ce83f2716820339ffdee1240f
- SHA512 63be876fb601838308472668d40a0df01739e268a35762fde16d9f4e11c88c96ed692aff9fcc8f554cc7322ac4087265a966b13bb69dd1d786fb388135ff4261
- SSDEEP 768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqjrG4YC7PUZP+W:bCDOw9aMDooc+vAqjDrLlW
- TLSH T16643DE386FD5B672E377FA7585F241C2A8B4B4123E01C81D69CE43465823F7AEDA160E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3736-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3736-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e000000019caf-13.dat CryptoLocker_rule2 behavioral2/memory/5620-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5620 lossy.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain lossy.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname lossy.exe - 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 2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3736 wrote to memory of 5620 3736 2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-11-01_fcd6c8bbf5bc832d5cb30bb4fa11a467_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3736 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:5620
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 56KB
- SHA256 2f03cf56258edea858e8170634e3afcbecc77ce515d666d9c3eae5d99a83be58
- MD5 5c0f83b9f57b9990b76c41b974cfe161
- SHA1 a003b9ff960b78080792041aaeb0d1ac7a523618
- SHA512 8bae4a09752c444549f3fb66899a86dd7814df4b95aef3de9bc1b525c3a2b0e5195ad3d99c22033b7227c9173aa63f6e77e0496886781f7d1595dc3a7e7e4d91
- SSDEEP 768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqjrG4YC7PUZP+4:bCDOw9aMDooc+vAqjDrLl4
- TLSH T1DF43DE386FD5B672E377FA7585F241C2A8B4B4123E01C81D69CE43465823F7AEDA160E
- MD5 SHA1 SHA512 SSDEEP TLSH