Analysis
- max time kernel
150s - max time network
148s - 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, 23:47
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe
- Size 46KB
- Sample260805-3swkfsydkf
- SHA256 162058f7c8f93e18043fb9f6219f277fb950036a1eb968a340843fc5dfac04a7
- MD5 da75d0f6019faf7b3a19dd1ddcb09ffe
- SHA1 f9727491b2262cd1296c0a33fdcca025eccc9af0
- SHA512 427e6b4b23b1e1d142b9b7304379ffb2859b56a0dbcfbe9129934892a96badeeac225518353849e92a6639a1665d398b9e8c9d2acc7dee56b3931dd73ff9ecb6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCT8:bgGYcA/53GAGgIvFV
- TLSH T1692355387FD62972D37BDF7586F691C6B975B8223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4256-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/4852-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4852-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4852 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_da75d0f6019faf7b3a19dd1ddcb09ffe_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 4256 wrote to memory of 4852 4256 2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_da75d0f6019faf7b3a19dd1ddcb09ffe_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4256 -
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:4852
-
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 79b3aec669edfa4d3e3ce96285d648f6fb7af72b0aa4c81a130bbefb8098109e
- MD5 7f1aa77c5aebe343f181119eeb5bb49e
- SHA1 f19e47a417f57f9437b89563a66b355aed88bb19
- SHA512 a3ade07361439607028b5b2e782f33d6ae72bde0a63563059cb5c413ff1cc2193eac35201cc3c97217cbe970a35bc934aa14eef1a57a817847f1c534d5e79944
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTA:bgGYcA/53GAGgIvFB
- TLSH T1F82355387FE62972D37BDF7586F691C6B975B8223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH