Malware Analysis Report

2024-10-16 06:27

Sample ID 220201-b3zw3sfdd3
Target e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211
SHA256 e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211
Tags
ta505 persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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
10/10

SHA256

e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211

Threat Level: Known bad

The file e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211 was found to be: Known bad.

Malicious Activity Summary

ta505 persistence

TA505

Sets service image path in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-02-01 01:40

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-02-01 01:40

Reported

2022-02-01 01:43

Platform

win7-en-20211208

Max time kernel

122s

Max time network

143s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

Signatures

TA505

ta505

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1916 wrote to memory of 1656 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 store-in-box.com udp

Files

memory/1656-54-0x0000000076041000-0x0000000076043000-memory.dmp

memory/1656-55-0x0000000074850000-0x0000000074890000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-02-01 01:40

Reported

2022-02-01 01:43

Platform

win10v2004-en-20220112

Max time kernel

121s

Max time network

148s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

Signatures

TA505

ta505

Sets service image path in registry

persistence

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust C:\Windows\System32\WaaSMedicAgent.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3664 wrote to memory of 1912 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3664 wrote to memory of 1912 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3664 wrote to memory of 1912 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e61ad845dbc498651623c50da9bc45294b146b06c91b0031452783a521302211.dll,#1

C:\Windows\System32\WaaSMedicAgent.exe

C:\Windows\System32\WaaSMedicAgent.exe 2eac42d24485ba3165235efa426cf772 m1LUVBdGck63P0D30X+vRQ.0.1.0.0.0

Network

Country Destination Domain Proto
IE 40.126.31.141:443 tcp
IE 40.126.31.141:443 tcp
IE 40.126.31.141:443 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 crl3.digicert.com udp
US 93.184.220.29:80 crl3.digicert.com tcp
US 8.8.8.8:53 store-in-box.com udp
US 93.184.220.29:80 crl3.digicert.com tcp
US 8.8.8.8:53 settings-win.data.microsoft.com udp
US 52.167.249.196:443 settings-win.data.microsoft.com tcp
US 52.167.249.196:443 settings-win.data.microsoft.com tcp
US 52.167.249.196:443 settings-win.data.microsoft.com tcp
US 52.167.249.196:443 settings-win.data.microsoft.com tcp
US 52.167.249.196:443 settings-win.data.microsoft.com tcp
US 93.184.220.29:80 crl3.digicert.com tcp
US 93.184.220.29:80 crl3.digicert.com tcp

Files

memory/1912-130-0x0000000074AA0000-0x0000000074AE0000-memory.dmp