Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/08/2026, 08:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe
- Size 32KB
- Sample260820-kk1kbscc76
- SHA256 6a80dc8ee6ef21e2f3ee19ab69aa682087c7bbcad32cda235ec8d0526a5e3fab
- MD5 f4c71eb9cc4392a7db5c11dfaa2d2229
- SHA1 d9613775f39797485936c5a20c0c7aa62eb1bfc2
- SHA512 e4c9d7f07aaf54513b9ec4088e667bd79590a9125e0c8e684daefe43ca76022ea0a5bcf966afac9b36fe53bb2544b506e03c76b4efb4eb7865560379e33823c4
- SSDEEP 384:bgCOR4uGLLQRcsdeQ72ngEUKK7YmE8jI0nrlwfjDU5ynuKKiJjH:bgCS4zYcgT/ENr0ryfjGquKKitH
- TLSH T1A0E2C83C7BD32972D277DEB585F791C6B939B82239258C4D58CF23848973B92AC8144E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3780-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000019cd9-13.dat CryptoLocker_rule2 behavioral2/memory/1720-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1720-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1720 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 2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_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 3780 wrote to memory of 1720 3780 2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_f4c71eb9cc4392a7db5c11dfaa2d2229_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3780 -
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:1720
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 32KB
- SHA256 ac578dca16e5e9219d632c3b57a1cec415afffdb3bbd5caa51ee22779b0e1022
- MD5 9bce4c71fc0a9ec53081fd64b76792ae
- SHA1 83bba0120e46419691e34eb4c42c6b9313a69101
- SHA512 e6fd99637f4b243a0db50e5e5a859335eb3be40b19a3b55b71461fbae5eaf73ef031e889b2abddf19c11a97724742ba2b645cc36e0a04932054737007c8e5129
- SSDEEP 384:bgCOR4uGLLQRcsdeQ72ngEUKK7YmE8jI0nrlwfjDU5ynuKKiJjB:bgCS4zYcgT/ENr0ryfjGquKKitB
- TLSH T1C5E2C83C7BD32872D277DEB585F791C6B939B86239258C4D58CF23848933B92AC8154E
- MD5 SHA1 SHA512 SSDEEP TLSH