Analysis
- max time kernel
149s - max time network
130s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
04/05/2026, 11:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe
- Size 62KB
- Sample260504-n5eedaev5m
- SHA256 662b0853788e4bdf5827abe93a6852a22cb9d24d84a95d48786e01dad648c199
- MD5 0c11a943c69b71373fd5fec0db25d3a1
- SHA1 ab27413565c9fe71ebd691f37f6e6c318e828e35
- SHA512 d4fcb839ddbb9d6b4e12900678c19acbeb0faa110fcc8da42201392f98f6510f20b770e3e06b8971a927d3b1cfe2ce4fbffb862a3335a78192d990399f009a79
- SSDEEP 768:b7o/2n1TCraU6GD1oVzX0WcO+wMVm+slAMvcWsUavRwz8l7lLF6dIZbCGu:bc/y2ikF0+B2qK8PUMbq
- TLSH T16F53123C7FD51672E377C6B585F6A1C6FA75B82239029C0D50CB93840833F5AADA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x001200000002ad8a-13.dat CryptoLocker_rule2 behavioral2/memory/2488-17-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2488 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 2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_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 2552 wrote to memory of 2488 2552 2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-04_0c11a943c69b71373fd5fec0db25d3a1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552 -
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:2488
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 62KB
- SHA256 9257c6b0ee6253c61477b2acb9327072f33733c7694c92adccf93511d33086ed
- MD5 3fe8f6096e51153f9012ebd5d937fb34
- SHA1 109384871d80ecea82c80028a4b21e598b114349
- SHA512 481fe98205b556d02d0f8f9c62b258975d838e73a662a91bbc814faf08910cb0ca3568f213e41112ba96d65f83f1450d7b5faf2e9988ef1902c700877c5972e1
- SSDEEP 768:b7o/2n1TCraU6GD1oVzX0WcO+wMVm+slAMvcWsUavRwz8l7lLF6dIZbCGb:bc/y2ikF0+B2qK8PUMbX
- TLSH T1F153123C7FD51672E377C6B585F6A1C6FA75B82239029C0D50CB93840833F5AADA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH