Malware Analysis Report

2025-08-05 14:36

Sample ID 250702-x3r25azyas
Target 2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex
SHA256 a3af7d268b36983b9ca11c49444c758802d7def7705252fedfd09c47560b542d
Tags
discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

a3af7d268b36983b9ca11c49444c758802d7def7705252fedfd09c47560b542d

Threat Level: Shows suspicious behavior

The file 2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

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: behavioral2

Detonation Overview

Submitted

2025-07-02 19:23

Reported

2025-07-02 19:25

Platform

win11-20250619-en

Max time kernel

106s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\gewos.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_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\gewos.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 nasap.net udp
US 35.212.119.5:443 www.nasap.net tcp
US 35.212.119.5:443 www.nasap.net tcp
GB 142.250.179.227:80 c.pki.goog tcp

Files

memory/3016-0-0x0000000000404000-0x0000000000405000-memory.dmp

memory/3016-1-0x0000000002640000-0x0000000002646000-memory.dmp

memory/3016-2-0x0000000000400000-0x0000000000408000-memory.dmp

memory/3016-3-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 1f2f33856b5eddd1903cc1228f1eb274
SHA1 2b64abb3a01db7f4d615beb071b62a640c9c4102
SHA256 5bf9023ff404152f57c41523187ccf8f77a5da3f4ffe2b4d67042eac1c067ff9
SHA512 9f436a3c26b57d0cf5e5fc4d0fdf4fc7f5b77663efab09754720c5511e7c77d4c049be7e07e33c5e00da523602b668837381292806f5b9c23e6e7f070099fa39

memory/4464-19-0x0000000000400000-0x0000000000408000-memory.dmp

memory/4464-21-0x0000000000400000-0x0000000000408000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-07-02 19:23

Reported

2025-07-02 19:25

Platform

win10v2004-20250610-en

Max time kernel

104s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3001560346-2020497773-4190896137-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3001560346-2020497773-4190896137-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\gewos.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\gewos.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_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\gewos.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_08fb7ad04d865a1949ae174450f534fc_cryptolocker_elex.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 nasap.net udp
US 35.212.119.5:443 nasap.net tcp
US 8.8.8.8:53 www.nasap.net udp
US 35.212.119.5:443 www.nasap.net 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 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp

Files

memory/2440-0-0x0000000000404000-0x0000000000405000-memory.dmp

memory/2440-1-0x0000000002160000-0x0000000002166000-memory.dmp

memory/2440-2-0x0000000000400000-0x0000000000408000-memory.dmp

memory/2440-3-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 1f2f33856b5eddd1903cc1228f1eb274
SHA1 2b64abb3a01db7f4d615beb071b62a640c9c4102
SHA256 5bf9023ff404152f57c41523187ccf8f77a5da3f4ffe2b4d67042eac1c067ff9
SHA512 9f436a3c26b57d0cf5e5fc4d0fdf4fc7f5b77663efab09754720c5511e7c77d4c049be7e07e33c5e00da523602b668837381292806f5b9c23e6e7f070099fa39

memory/3180-18-0x0000000000400000-0x0000000000408000-memory.dmp

memory/3180-27-0x0000000000400000-0x0000000000408000-memory.dmp