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
08/08/2026, 17:13
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe
- Size 36KB
- Sample260808-vrlpvsan7y
- SHA256 b2a0bb6b852b7317a01c1536ae908d93a8c6bb4979d162acac0ff8d88028d2af
- MD5 d329bf9dbaa21ed30d3721763947545e
- SHA1 72a222fdad7b08c2c974c3a8988459340bed7309
- SHA512 b0c06ed9f4f6eb897ab501daa5aff77456349b306447a37a87db566a6f1dbc81c88b6b6332354274f4e0037d99f91d5d1967e3f087763217feebe5a15d99fe3d
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjL:bG74zYcgT/Ekd0ryfjWlNGvL
- TLSH T1C903D435FBEA3822DA37AEF491F640F2BB3F7819791078CE449BE34D4872611995D409
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4484-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4484-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001300000001b1d0-14.dat CryptoLocker_rule2 behavioral2/memory/1688-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1688-21-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1688 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4484 wrote to memory of 1688 4484 2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_d329bf9dbaa21ed30d3721763947545e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4484 -
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:1688
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 37KB
- SHA256 75d67c2b25f7d12ed81cc6d07a0b400741f78cbdf85011eacdcfd3a94e4f1817
- MD5 54c68852ab4f3f188a4f35b7dbbb8f4c
- SHA1 ff8cb6ae858a01601689552d0a77e93a462962d7
- SHA512 393fa87c0fe7f532e76113a4f142438f928918392ea2c0c36ac4e02d2a48d36ea72ca4745550616d81e8f55db2b9971f10c29b3973d867de9942b0fce2e94ed1
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjP:bG74zYcgT/Ekd0ryfjWlNGvP
- TLSH T13E03D435FBEA3822DA3BAEF491F640F2BB3F7819791078CE049BE34D4872611995D509
- MD5 SHA1 SHA512 SSDEEP TLSH