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
03/08/2026, 10:53
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe
- Size 46KB
- Sample260803-mzeyaavele
- SHA256 487d2d5e5e7f55f108b1718c8c08dd1531e72905681c17e17cd7684d6025d701
- MD5 df8b71fa564e767c7a46a7481841e795
- SHA1 73a2c89486ea052570cf18d7b853269d2b990f8d
- SHA512 19e691d72319a7afb0a4874805fc324164e76becd177ac772c598b02a3ee431254441026ec3eee20aafdf0b2c6ce55f4863ac5dc4784693a69a256da6ac4caca
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhzj:bgGYcA/53GAGgIvF7Eh
- TLSH T1B42322387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5640-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000019cc1-13.dat CryptoLocker_rule2 behavioral2/memory/1116-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1116-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1116 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 2026-08-03_df8b71fa564e767c7a46a7481841e795_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 5640 wrote to memory of 1116 5640 2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_df8b71fa564e767c7a46a7481841e795_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5640 -
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:1116
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:5348
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 c4f011b5ddafff008fb591e1cd44a0b6dd208ab11df6ef1883dfbc8a6c9c5cf5
- MD5 7476b8a9745fd1defddeb75f6fb3900b
- SHA1 ea2a9537c6a0e462793b044213dbf6f1b32a7498
- SHA512 2022b0efe3a5d80e1cde28d8e117aaf7af7a9fbfebe46145eca2575d939394e5a02eac0190c6a9d4ac7e3bbfa4335a867b08953c22327c4cd44d3fe298f3fece
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhz4:bgGYcA/53GAGgIvF7EW
- TLSH T1F42321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH