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
04/08/2026, 03:05
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe
- Size 41KB
- Sample260804-dk7kba1brh
- SHA256 2267a2490b2dd412ed09d82b27189610408c9733c0eceffa49139a3782fab336
- MD5 33b0ca42fec46ddf0cefbfe3ba2dea33
- SHA1 b96e8bb3f67aee76313917afceef0d3cf7fff69b
- SHA512 c013173d9c9d23081c238c8a422da932258319c7dd62a84f9c0a773b4191ff1fcc21a51b3f848306a56a29f0d9bc6dab54cd33624aeea6b8e97b865a1854d4f9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCPh:bgGYcA/53GAGgIvFU
- TLSH T1491375387FD62972E37BDFB586F691C6B975B8223D16880D44CA53844833F62DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3008-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cdf-13.dat CryptoLocker_rule2 behavioral2/memory/292-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/292-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 292 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 2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_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 3008 wrote to memory of 292 3008 2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_33b0ca42fec46ddf0cefbfe3ba2dea33_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008 -
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:292
-
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 1fb3ed53573bab58954482d5d62462712a953c4187fb5868abfbf2c777ca2139
- MD5 f8f2798d0b8dab4289b59ee2ed8edffc
- SHA1 beb28c3b7df8aa8f2286511978e8bbc27aabe12d
- SHA512 6e83f2e6f53266dd8891eeebde67844b2e5349dbe95150c82d59716a3b6ea509bb64a29c2789ab3da9e6be81364cebd34169a41f352c96e5228639e6c1506e69
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCPz:bgGYcA/53GAGgIvFq
- TLSH T1581375387FD62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH