Malware Analysis Report

2025-08-05 14:36

Sample ID 250702-x35m8agj6v
Target 2025-07-02_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex
SHA256 3803777c6d13e30c381ff440d87a3dc2af6452f2d0451d3d86f5e3d857850875
Tags
discovery upx
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 Overview

score
7/10

SHA256

3803777c6d13e30c381ff440d87a3dc2af6452f2d0451d3d86f5e3d857850875

Threat Level: Shows suspicious behavior

The file 2025-07-02_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery upx

Checks computer location settings

Executes dropped EXE

UPX packed file

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-07-02 19:23

Reported

2025-07-02 19:26

Platform

win10v2004-20250610-en

Max time kernel

105s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_0c42e6f529d5afa9d216be1688f6c908_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\asih.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\2025-07-02_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex.exe N/A

Executes dropped EXE

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

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2025-07-02_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex.exe

"C:\Users\Admin\AppData\Local\Temp\2025-07-02_0c42e6f529d5afa9d216be1688f6c908_cryptolocker_elex.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 13.216.111.180:443 emrlogistics.com tcp
US 8.8.8.8:53 e5.c.lencr.org udp
US 104.18.20.213:80 e5.c.lencr.org tcp
US 8.8.8.8:53 www.hugedomains.com udp
US 104.26.6.37:443 www.hugedomains.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog 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/5072-0-0x0000000000500000-0x000000000050F000-memory.dmp

memory/5072-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/5072-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

memory/5072-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

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

MD5 cc18f506aa2e95938e02b3c7a2f267ee
SHA1 d609a0f40d45128d4d74310af603b61248c63c2b
SHA256 c707aaae801c53d36f4e61f4866bcab37b8d50981607046ffd946c5f3e1f4ff3
SHA512 41fce77377432da7a3cd9e1d39a23e99b4d4bfecd2be9602bc280385b850439ad835e4c1584f9a538eeafe4f10cd621d915986f6f73f5eee35d03df2d8ba51cf

memory/5072-18-0x0000000000500000-0x000000000050F000-memory.dmp

memory/776-49-0x0000000000500000-0x000000000050F000-memory.dmp