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
05/08/2026, 04:42
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe
- Size 52KB
- Sample260805-fb3acaycld
- SHA256 6eb6557dfa80cc3f38993d4d0ca2ae580faec831440c34fbd2b22fe4fa709c1d
- MD5 acf28453be7326cc211c527116c56d4e
- SHA1 d8100171ff6e0714d2223978cf57025cf1262d3e
- SHA512 21c10e18784e557717708e30f2668cc51f33e5ba9a2c084162575f3fbd8a1aacff2e30ecaad0eababf783793a57ef763dfb5d12915ddea76294215c8e6cfa6d2
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycK6:bgGYcA/53GAGgIvFW17Z
- TLSH T1FB3311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4144-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/2076-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2076-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2076 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 2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4144 wrote to memory of 2076 4144 2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_acf28453be7326cc211c527116c56d4e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4144 -
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:2076
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 7aee14a0e747088b7636523acbb7f1652e5a15b6f6099a73c4a13fdf7614b2f9
- MD5 fc755d56bcc123d06e3adc72de135ad6
- SHA1 b295c62987a778d71c7e077fd1a346fd48dd3ddb
- SHA512 5a6129b850e2d5b6223b50ef181a4b4d0c2204ffd2e9e04b01923ee3988dc5e1e1a79930dd383f0fbcdbba77b4861d2dbf60536e2c94ffdd19a62ef827bc5156
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycKm:bgGYcA/53GAGgIvFW17V
- TLSH T1F13311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH