Analysis
- max time kernel
150s - max time network
152s - 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, 11:02
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe
- Size 34KB
- Sample260820-m5gn3avfre
- SHA256 63970a619ef8c7f2504d0da99ffa957210897f1a701625a24a9f9ac5cca46dc6
- MD5 f907b50e0597314ce12758fe63aded46
- SHA1 6595c32efdd9e54d91dd9885825be55e83e5a2e4
- SHA512 6668815a70a939f5d6f7f756c15c3aabb7be7491a9eb3980d123d0ca14929751a376cd86c21b66165ffcfb5ac29856972f7ca9efde6732094ba58c2c975e35ce
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YtY3GoscwOK:bA74zYcgT/Ekd0ryfjLzViYtY+zOK
- TLSH T19AF295386BD62872D27BDEB595F791C2BD75B8223E158C4E58CB23884D33B52EC4250D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3416-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001136f-13.dat CryptoLocker_rule2 behavioral2/memory/4264-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4264-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4264 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_f907b50e0597314ce12758fe63aded46_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 3416 wrote to memory of 4264 3416 2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_f907b50e0597314ce12758fe63aded46_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3416 -
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:4264
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 34KB
- SHA256 c2e461542bf53b07e96b4d28e33016b50377a8461bb442a3c8c2f9cdd0631fdb
- MD5 e5b7c5cf89cd047c8b36ae4627ead42e
- SHA1 bf08bda614722ea8f4d2392572a2ac279a795808
- SHA512 03ec6a14b9d6346f75e53e38822633c160bde361160ba1f7f390e5404d697125085bd58c7b7d3e70cdac732d52d5e35c8604dbf62452b88d166e9c628829f43f
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YtY3GoscwOc:bA74zYcgT/Ekd0ryfjLzViYtY+zOc
- TLSH T161F294386BE62872D27BDEB595F791C2BD79B8223E158C4E54CB23884D33B52EC4250D
- MD5 SHA1 SHA512 SSDEEP TLSH