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
05/09/2026, 10:10
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe
- Size 34KB
- Sample260905-l7pl1sam8v
- SHA256 dbca41cd972b58f5dff8e2cd24a01ee026e9fda8903e560ea88eaff94cffbf67
- MD5 584d43a90288a273305d381aaaf377b3
- SHA1 3eb1a350388588542c3964bc2d3a986f9ab62d88
- SHA512 65f9f82fad2e186c3672db6743da7510bf679e6f06bc36616aac19407443a7f8cfedf7eb455948f69737260e44c7d37aa1bf73a4000d68605472a130f897b8e7
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXua/:bG74zYcgT/Ekd0ryfjW
- TLSH T1C0F2F835FBEA3C26DE36AEF4A0F750B16B3F7819791478DE089BE34D8872601991D009
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3268-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3268-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001200000001b303-14.dat CryptoLocker_rule2 behavioral2/memory/5692-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5692-21-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5692 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 2026-09-04_584d43a90288a273305d381aaaf377b3_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 3268 wrote to memory of 5692 3268 2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-04_584d43a90288a273305d381aaaf377b3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3268 -
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:5692
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 35KB
- SHA256 ffbac70a5caff4287c830d2a1fd1e44b9bd9a2cd0820800527f2a4529b965377
- MD5 59738998e787e43d0ad8f3126e3a9a82
- SHA1 44b8cd05da3097c327f6e4415b4c61edd93666fe
- SHA512 019b1e305377eebc1c44731b7d863c3136b46f818352c27919beabbf977e95f4724c6b09ad161a7c94c70095f87c844ccb0de911745f110a1eca054350b6c894
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXua2:bG74zYcgT/Ekd0ryfj3
- TLSH T145F2F835FBEA3826DE3BAEF4A0F750B16B3F7819791478DE089BE34D8872601591D109
- MD5 SHA1 SHA512 SSDEEP TLSH