Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/10/2026, 14:59
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe
- Size 41KB
- Sample261020-scyd1aa19t
- SHA256 c99ac331f85202a741ba3f81de8ec368b2dad7b356c3b71ab0f7ac7eae07890e
- MD5 8125c9774bdd7a1c6ba4ec705f804565
- SHA1 d9967e786ce2dd417230a2d48becad0ee7e7452c
- SHA512 2ec3692a3019a13ab4c3d45f0e9c21ce2103a6ccb7267c33299b8522a023dfc2063f832baea46437db9093061650f10ef210d24b98bb08700fdea3250819899b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzW:bgGYcA/53GAGgIvF96
- TLSH T1F31366387FD62972E37BDFB586F691C67935B8223D16880D44CA53844833B56EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3696-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001b2c5-12.dat CryptoLocker_rule2 behavioral2/memory/4648-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4648-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4648 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hasfj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname hasfj.exe - 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 2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_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 3696 wrote to memory of 4648 3696 2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-19_8125c9774bdd7a1c6ba4ec705f804565_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:4648
-
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 0dd685729c4415de6c4aa72c24375d10b100cfa147bc911059a92149f309aea1
- MD5 de31a407dae41895616a4a45490c011d
- SHA1 4de0396328832bfa815d6ec40082c30a976eab4d
- SHA512 e5de3ab383d14284ea7a284b101026ae9298492bccdc69eab840f1c3096998a74587f1f8edc1dab88bca8d78e6af5601ac774110d53ed51501b723025ef337cd
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzk:bgGYcA/53GAGgIvF9Q
- TLSH T10D1376387FE62972E37BDFB586F691C67935B8223D16880D44CA53844833F56EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH