Analysis
- max time kernel
150s - max time network
154s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
21/04/2026, 04:41
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe
Resource
win11-20260130-en
6 signatures
150 seconds
General
- Target 2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe
- Size 93KB
- Sample260421-fa43jsbx9t
- SHA256 a69619b0628f35244693c605320d132bea3d2a0890e77ceae07457243b6a5512
- MD5 fe4f307d73e92b20c3e524c0c6b7e7d1
- SHA1 4509981cc83e51ba10f2fd57e822a4202ccb96b5
- SHA512 9e761aa62cd7e865b625f8ac7b802643f41e346dd1715dded07b7d9cfa33c1db99eac1f97195c1bb534acd3d4937308c359d21c6b7a8485c48aca2f35fccf5b8
- SSDEEP 1536:9Uj+AIMOtEvwDpjLizbR9Xwz/5OlEdwaW7Ob:+CA9OtEvwDpjmPvwnb
- TLSH T1DD93B575AED81532E37B9E7096F6D1C2BD35B9933D11980E80CAA7440C33B52EE61E1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/5728-2-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5728-3-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000c000000027002-14.dat CryptoLocker_rule2 behavioral2/memory/2548-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2548-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/5728-2-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/5728-3-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000c000000027002-14.dat CryptoLocker_set1 behavioral2/memory/2548-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/2548-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 2548 misid.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 2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language misid.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5728 wrote to memory of 2548 5728 2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5728 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2548
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 94KB
- SHA256 3fe812ade27385d87b9a1121ef41f1e5c09d174b4261c1765520964ca3847fbf
- MD5 84d92bd63d8c0bd324418a904600294f
- SHA1 e61c3cf6a483a3cf474ac812db3941a7de2f7527
- SHA512 f3fbd2909899e3fb1c21f843cd7fe52d0b7b16b1088ecba86924713ec6a1caa53f40237fa04a4ed0bdef55e6a258b7a58d8ad332ed8bb062a59fa068692ae8b8
- SSDEEP 1536:9Uj+AIMOtEvwDpjLizbR9Xwz/5OlEdwaW7OV:+CA9OtEvwDpjmPvwnV
- TLSH T12F93B475AED81522E37BDE7096F6D1C2BD35B9933D11980E80CAA7440C33B52EE61E1E
- MD5 SHA1 SHA512 SSDEEP TLSH