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
05/08/2026, 04:46
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe
- Size 42KB
- Sample260805-fd3znavzcx
- SHA256 de3dbcd3d529a54f44569af2369e2bbe6361496bcc1b45ea7d8a1ce88ff9f8cb
- MD5 4c46fb617c593cca1440bddf687e48c1
- SHA1 20047a19ec675c559b2cfd726c82ff250216b5b3
- SHA512 fe94967127d5121dbaf645613a0315c8443703b673fa8707aae89e54d85a8beb0e9144ee8f426cb20f305b25399c54ed6cf2741d8ab89d7ded3e50b01a7ad668
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCg:bgGYcA/53GAGgIvFF
- TLSH T1221374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1984-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00160000000118ee-13.dat CryptoLocker_rule2 behavioral2/memory/5104-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5104-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5104 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 2026-08-05_4c46fb617c593cca1440bddf687e48c1_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 1984 wrote to memory of 5104 1984 2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_4c46fb617c593cca1440bddf687e48c1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984 -
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:5104
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 7bd3d69370f3d152ccb7cb23f89644a81752b29894d717b42c75ba35f2eb5849
- MD5 437220796e8758c24386481e6124e732
- SHA1 d1399c3ad6ef9bff1965a1f0815e99c57867c9a5
- SHA512 02459e8fc83f909a152fcbfed226d6d0e7886a6793416a1d71873f7179ab26b3ced3f1921bd3fe9169b7617a247e1b1591b7896ecd9b8428a2e3e28f31fe6cc9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCq:bgGYcA/53GAGgIvFD
- TLSH T1D61374387FE62972E37BDFB586F691C27975B8223D16880D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH