Analysis
- max time kernel
148s - 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
02/08/2026, 11:49
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe
- Size 41KB
- Sample260802-nzhvlsaj2x
- SHA256 d44783842f5dc1c0e10e1ac184660f109a0a0be79829d41494764a209cc91f0a
- MD5 3dd091a87908b3c4b2558a91560bb3a1
- SHA1 bb38d602d03012a5b1456cde86b0ea6a36721764
- SHA512 725f124c6a966b8b44918d08abac49cd2b03126f19e39977dad295b9a716b7bf05946bebb8919cf09bb911bda33bc860b758321828b998605b0673cdb370e401
- SSDEEP 384:bgM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorw7SigsXmyuvLVHN4X/xtBC:blo/2n1TCraU6GD1a4XcsSKNuxNwKph
- TLSH T172134138BFE55972D377C67585F2A1C2B9367C123D02980E55CBA3880D33B5BAC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/files/0x000700000001b811-13.dat CryptoLocker_rule2 behavioral2/memory/3204-20-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3204-22-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3204 rewok.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 2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rewok.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 936 wrote to memory of 3204 936 2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-02_3dd091a87908b3c4b2558a91560bb3a1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:936 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3204
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 41KB
- SHA256 10fbb64da4ea46013fb0034bdd1da07de160520b12997439c2d4793abd80eb85
- MD5 bdacbea332c2bb7391f4ccc447f4e3f6
- SHA1 67722a743a5978c965481274af8c037cd56e10b9
- SHA512 676fce79b57a6c484181e5d19a55c660d2bfd1f1cba8beeb9a2a12b5272221a14c850358be5429426b1e7e7ac5077bf8946058310d94b2521bcf7ac2575e3193
- SSDEEP 384:bgM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorw7SigsXmyuvLVHN4X/xtBd:blo/2n1TCraU6GD1a4XcsSKNuxNwKp+
- TLSH T14E134138BFE55972D377C67585F2A1C2B93A7C123D02980E55CBA3880D33B5BAD90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH