Malware Analysis Report

2025-08-05 14:35

Sample ID 250702-x3yvnszyav
Target 2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex
SHA256 e4de265d3bd47185815ecb263e506b4f01d403d115fca2fb8c3ae32242336dfd
Tags
discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

e4de265d3bd47185815ecb263e506b4f01d403d115fca2fb8c3ae32242336dfd

Threat Level: Shows suspicious behavior

The file 2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-07-02 19:23

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-07-02 19:23

Reported

2025-07-02 19:25

Platform

win10v2004-20250619-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3008489981-1977616533-741913813-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\rewok.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rewok.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe"

C:\Users\Admin\AppData\Local\Temp\rewok.exe

"C:\Users\Admin\AppData\Local\Temp\rewok.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
GB 2.18.27.82:443 www.bing.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp

Files

memory/372-0-0x0000000000404000-0x0000000000405000-memory.dmp

memory/372-1-0x0000000002200000-0x0000000002206000-memory.dmp

memory/372-2-0x0000000000400000-0x0000000000408000-memory.dmp

memory/372-3-0x0000000000400000-0x0000000000406000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\rewok.exe

MD5 8254dfef0594b8669d6c38ae60f84efe
SHA1 b03c42e8ca49915cb109ddbdaf73adf57cc27121
SHA256 8a12d2de566c7685588155a129d608e22bf2be4ec7f7de0ebec4f649b85ef23c
SHA512 c9b37dbd22539f82a3de780a95dcaeaa93db7b5f205ab2a682bcd329927dc9766452d99ad109ff733dc2247c8ffbfbb54517ae29cc1b4423e09fc46811de2bd6

memory/3164-19-0x0000000000400000-0x0000000000408000-memory.dmp

memory/3164-27-0x0000000000400000-0x0000000000408000-memory.dmp

memory/3164-29-0x0000000000400000-0x0000000000408000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-07-02 19:23

Reported

2025-07-02 19:25

Platform

win11-20250619-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\rewok.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rewok.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_09f23b132f8975e4916479ab29c57cde_cryptolocker_elex.exe"

C:\Users\Admin\AppData\Local\Temp\rewok.exe

"C:\Users\Admin\AppData\Local\Temp\rewok.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp

Files

memory/5088-0-0x0000000000404000-0x0000000000405000-memory.dmp

memory/5088-1-0x0000000000710000-0x0000000000716000-memory.dmp

memory/5088-2-0x0000000000400000-0x0000000000408000-memory.dmp

memory/5088-3-0x0000000000400000-0x0000000000406000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\rewok.exe

MD5 8254dfef0594b8669d6c38ae60f84efe
SHA1 b03c42e8ca49915cb109ddbdaf73adf57cc27121
SHA256 8a12d2de566c7685588155a129d608e22bf2be4ec7f7de0ebec4f649b85ef23c
SHA512 c9b37dbd22539f82a3de780a95dcaeaa93db7b5f205ab2a682bcd329927dc9766452d99ad109ff733dc2247c8ffbfbb54517ae29cc1b4423e09fc46811de2bd6

memory/5108-18-0x0000000000400000-0x0000000000408000-memory.dmp

memory/5108-21-0x0000000000400000-0x0000000000408000-memory.dmp

memory/5108-28-0x0000000000400000-0x0000000000408000-memory.dmp