Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
10/08/2026, 12:17
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe
- Size 42KB
- Sample260810-pgaxqaga22
- SHA256 ff4855d4698205941a303a713b9890e9370ee49a00b7c1e6d04da378ca47f5d7
- MD5 3b3e2ffd2c0ef6ff384f6ae1b9cb7de4
- SHA1 14b32cfe24cb11edf26f5a2534dfa883f1367e9f
- SHA512 46ac5c8b85d59631b07adaf5f356df6871136ecef83539225d8d59f1bef148c38060a766dfe4283f88b50c61bfdaaa25660c2c5d093c46d351177db6fa32d2e5
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCQ:bgGYcA/53GAGgIvFd
- TLSH T1551374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2572-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cdb-13.dat CryptoLocker_rule2 behavioral2/memory/4260-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4260-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4260 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 2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2572 wrote to memory of 4260 2572 2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-10_3b3e2ffd2c0ef6ff384f6ae1b9cb7de4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2572 -
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:4260
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 d3090787d34d1b7767a2c8563c799bb94fa787df55e002807c5523204e2700cc
- MD5 3b75ab66e5e4b4e32b169a69b28421bf
- SHA1 9c40a99cca608283f9d8f8a32131407955004689
- SHA512 f346521b9c4979fd30acc2c36b9f166a6666ae7ce0096f2e9e0deb374fc3e4b868836a78c2d519ec43f8e73aea8bee8cbfb90131f8c69705d9918202d97098b2
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCq:bgGYcA/53GAGgIvFb
- TLSH T16C1374387FE62972E37BDFB586F691C27975B8223D16980D40CA53844833F62DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH