Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
12/08/2026, 03:34
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe
- Size 47KB
- Sample260812-d4tskahq3y
- SHA256 ac1cfa2fb470fa03d95445f83cad749f03d908ebaaedb8032b7be1c32b23e28c
- MD5 8b6bbf9e19d95e7b03663a65e8c13ff4
- SHA1 625b2c0cb3b913e8f109d0a547d5f41c99841315
- SHA512 a25c8538034dc2a79b812b423b9f56d632dabfa1c81c939f84cf6864459fbe291872c9b00b5c03e0f9f5322474666e9cb26e6aa5661c1e7ed3621402349637cc
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCp:bgGYcA/53GAGgIvF9v2ZZCp
- TLSH T1692355387FE66972E37BCFB586F651C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5860-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b83c-13.dat CryptoLocker_rule2 behavioral2/memory/3084-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3084-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3084 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 2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_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 5860 wrote to memory of 3084 5860 2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-12_8b6bbf9e19d95e7b03663a65e8c13ff4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5860 -
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:3084
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:4212
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 48KB
- SHA256 79beaaa96a195eea7e71ab86c3f0412ddd8c891ea2860179d8e4cefd23df3d7e
- MD5 264fa54aaf68e338eee3b077b4bf3d8b
- SHA1 4ab7d1dbeb31e8ec3e9b4f297b7fe06b208c7b70
- SHA512 f720c5ad218590062159d07f0e093c619509085a62ae22a39d5de76927996d111152c2fd535003185b5b43b964de7fc7d138fe7a3035460a3981e64c90e02663
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCc:bgGYcA/53GAGgIvF9v2ZZCc
- TLSH T1632355387FE66972E37BCFB586F651C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH