Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/07/2026, 22:15
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe
- Size 40KB
- Sample260720-16dkpahx4y
- SHA256 afe742c5eea3272ad815f2a98589f8cb4bd7d13f685d8a9a8535717c5233030f
- MD5 452cdc35293b74b9a64be4f155beffa9
- SHA1 b52ae81ff0cd22853911cdae4d786e63e519e432
- SHA512 473dafa684982d9ec9292f0f89a8b574325d6f81c23157a790ab7ad13f1cb531919b5edcee4d64b7bded6b5e40c795c4c184dbe7468961fbcb05843fccd88ec6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCZ:bgGYcA/53GAGgIvFM
- TLSH T17A1385387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1076-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000000082a-12.dat CryptoLocker_rule2 behavioral2/memory/3656-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3656-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3656 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 2026-07-20_452cdc35293b74b9a64be4f155beffa9_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 1076 wrote to memory of 3656 1076 2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-20_452cdc35293b74b9a64be4f155beffa9_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1076 -
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:3656
-
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 fec4a035ce37a19fb5724078ea3ae7a8ff0a54f671a15fb14a9031b1d445da23
- MD5 7e493708431cab38834a9094e43fc2c8
- SHA1 a167214039c7d74314dce52e511a94c45226be93
- SHA512 741c2b7ad4a78dcfe649fd4da3cd2a99c3f1e7f64994cc14bd352a57e157d026a4acf3ba00aed607e61a4142634019dbdb2eae5b6fdd477d7c7c1bd8b4dcbcaf
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCP:bgGYcA/53GAGgIvF+
- TLSH T1601385387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH