Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
25/05/2026, 14:27
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe
- Size 42KB
- Sample260525-rsplcses2x
- SHA256 82347d3b6b51d3ac9444e2c6d1c8ca23d328f5c1503b7ccad902c3c80d88d6d5
- MD5 619ebfec39041cf80fcac9d17effefda
- SHA1 17693d32a5e694af3f6d0720de8bc701ec778f84
- SHA512 a0187a677b1444568af4f0e152a01b023c2032e99c4c91a3d4432380aa0a8c44a2eb68e3c3163b61115abae4213eaeb52bb5f3890d45defb6e38b14ae288b52e
- SSDEEP 768:bFo/2n1TCraU6GD1aIXcn62tH/1/LpP+TX:bC/y2Zm6iH/NLpIX
- TLSH T1AA1343387FE45972E377C67595F3A1C6B93A78123D029C0E55CBA3880833B5AED90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000d000000025e21-13.dat CryptoLocker_rule2 behavioral2/memory/2812-19-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2812 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 rewok.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 816 wrote to memory of 2812 816 2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:816 -
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:2812
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 43KB
- SHA256 f3bab724a42b12aba5d27007aa66781a137bd36df0ce214723ad52d978b0d85a
- MD5 5051e8bd156b712aff5ab4a7deccb7f6
- SHA1 da84ab2ea2a2a46e70163ea4df4059f004163dee
- SHA512 f4364b22167924126c1ed493f388a57399975bd5a89380ffeb148b8a084072252b7c03e947cf18ef930eb31705b1f02db8ed8df7374b5a27eb4afc91df823036
- SSDEEP 768:bFo/2n1TCraU6GD1aIXcn62tH/1/LpP+T5:bC/y2Zm6iH/NLpI5
- TLSH T1C51333387FE45972E377C67595F3A1C6B93A78123D029C0E55CBA3880833B5AED90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH