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
25/08/2026, 07:55
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe
- Size 36KB
- Sample260825-jsfpfsfn5t
- SHA256 972ca4ab5897930dc9b00d9b972faa9014f715b92abc5520305c15e797ddccd7
- MD5 8d76fc61ca8df1a3b05fe497bd6291e9
- SHA1 f64e40f4ef0282200e1605489433bd30c9429b49
- SHA512 8d3aca39fefdb652d9c198956eaed312ccd8d6b8d8c0a5c267a913bd1f1d81dffb71dbcaa777b0cbdf2dc1918bf9a7d1814624cc852ad97db7cf7548e2a90eb3
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YjyAFkt5ChXD:bA74zYcgT/Ekd0ryfjLzViYuAN
- TLSH T10CF295386BD62972D3BBDEB595F750C2B935B8233E158C0E54CB23884D32B26EC5261D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2072-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0006000000006977-13.dat CryptoLocker_rule2 behavioral2/memory/4788-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4788-24-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4788 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 2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_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 2072 wrote to memory of 4788 2072 2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-24_8d76fc61ca8df1a3b05fe497bd6291e9_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2072 -
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:4788
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 36KB
- SHA256 51f5fae6667f8ae1c4ccdc6260df4c21b92a844abbb5768b8854b8257cd591e5
- MD5 3c8f19996c8b2771c35ae5215ed8f0f9
- SHA1 dffd227f7a208f3d777ab549e10e608c46fe51db
- SHA512 4a0718bfa7d049d2c818d2482cf98ee1fd43b098dec9bad025a70752e4f475d5f54fd5c2b57cd79ed90c67f0970d80367c27f2fd5d3694c6080c2bdc6c4cb8f9
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YjyAFkt5ChXJ:bA74zYcgT/Ekd0ryfjLzViYuAX
- TLSH T169F284386BD62972D3BBDEB595F750C2B975B8233E158C0E54CB23884C32B26EC5261D
- MD5 SHA1 SHA512 SSDEEP TLSH