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
07/08/2026, 01:48
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe
- Size 41KB
- Sample260807-b8cczade23
- SHA256 dc59469158bfdb3485d477048a80b59527bd0d7b321994826e26b1510820f851
- MD5 8e1a897aeba40a700a824ba8c134409e
- SHA1 544a2254097db0b75bc1f070e47416bfd0165ac5
- SHA512 3437dae67e844194e56c38fead43f30911e9757001865b1c4cbee00a6712e6d9ee618235ceddcf048240b16d19474edf9298ec8472337aaea3e58d0257979124
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCq:bgGYcA/53GAGgIvFb
- TLSH T17C1374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3728-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b315-13.dat CryptoLocker_rule2 behavioral2/memory/6004-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/6004-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 6004 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 2026-08-07_8e1a897aeba40a700a824ba8c134409e_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 3728 wrote to memory of 6004 3728 2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_8e1a897aeba40a700a824ba8c134409e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3728 -
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:6004
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:5532
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 49109b8233ca499acc6fd37af1bfe348469ca3ac11cd1646421148776d8dd14a
- MD5 16647129a4ec6b2bfd1890fd19d63627
- SHA1 3a41ecb827371a8334f09a154ba4a8d8e9aad7b1
- SHA512 7c5fa9142d98a226ad738e604f6d73bd65f8307f9283593fa5109a95745b13bdbaef7349de216f4bc61df8600dfee3e8fabfd0cfb45443c3e4d29a4e83e8dfdc
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCK:bgGYcA/53GAGgIvFj
- TLSH T11F1374387FE62972E37BDFB586F691C27979B8223D16880D44CA53844833F66DC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH