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
20/08/2026, 03:09
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe
- Size 65KB
- Sample260820-dnnavayere
- SHA256 dd8ccdacb74bee3d194fc64136f3884be5b57478c28b8360bd9f322932f604fd
- MD5 4a699bff64d33799bcb56a9d6c730218
- SHA1 f5dad0158515ed73d584340d2fab06fcd02052fc
- SHA512 fdf68dbd511ebcfe755e72133f5c1189d7ae1b58fc6a6f820e9ebcc709b2df5b74e2661ae24704c9bda440768e9fccd64128bf8765bd80b89f6b7381e5cff9ec
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16zle/H:bG6YcA/X6Gw8qDxRWP6JG
- TLSH T11163F83D7BC61672D3778AB196F791C3BA36B4323912884D44CE53480933F62EDA2A4D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4624-2-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019cb8-13.dat CryptoLocker_rule2 behavioral2/memory/1188-18-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1188-26-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1188 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 2026-08-20_4a699bff64d33799bcb56a9d6c730218_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 4624 wrote to memory of 1188 4624 2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_4a699bff64d33799bcb56a9d6c730218_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4624 -
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:1188
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 66KB
- SHA256 eb880d355c4e6ca4ba01941f317108907476d5a70ccf38a020e7a49e6f95e44f
- MD5 4fffa3a18c00bfd3fc29a83f701b5a52
- SHA1 584899159cd796de282c291cd9ad85d1fc5e13fb
- SHA512 ba5590c91469ffcb13a3441bab51370452971f3836cf7e2ab7f4d6555e6be72d9482c0addf235807cb3602e571db0d270dc118a58e15e65ecda46c3116bf42e2
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16zle/T:bG6YcA/X6Gw8qDxRWP6Ji
- TLSH T1DB63E73D7BC61672D3778AB196F791C7BA35B4323912884D44CE53480933F62EDA2A4E
- MD5 SHA1 SHA512 SSDEEP TLSH