Malware Analysis Report

2025-01-18 21:29

Sample ID 240321-tdm54agf2v
Target dc06ac13dbaa78b63d9d5ed3bc320325
SHA256 7b9b1a64a811390acb3384677420ed0508176891723708ac43cf980bf40c8701
Tags
adware stealer
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

7b9b1a64a811390acb3384677420ed0508176891723708ac43cf980bf40c8701

Threat Level: Shows suspicious behavior

The file dc06ac13dbaa78b63d9d5ed3bc320325 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Loads dropped DLL

Installs/modifies Browser Helper Object

Drops file in Program Files directory

Unsigned PE

Modifies Internet Explorer settings

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-21 15:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-21 15:56

Reported

2024-03-21 15:59

Platform

win7-20240221-en

Max time kernel

118s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"

Signatures

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{00A6FAF1-072E-44CF-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
File created C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\UrlSearchHooks C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\URLSearchHooks\{00A6FAF6-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\URLSearchHooks\{CFBFAE00-17A6-11D0-99CB-00C04FD64497} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\Programmable C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\ C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\Programmable C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe

"C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"

Network

N/A

Files

\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL

MD5 fc7fb80d01d6d4c66ea91e9feebc2800
SHA1 488dd6c91963c1d5d4a8f82949f78d4e2b137297
SHA256 48cb732a3c288fcee8b33045b8a58622fd3dfcd56cfd9b730d90fa154207de92
SHA512 60ea3137e514e8bc8d8fb9d93da58bde11f8507d54bcb94bc6a69095d224a9236c086b7ea288d0d5a3c3b52aa9f16897601a2dbfde09a59cf5338640c9e7232a

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-21 15:56

Reported

2024-03-21 15:59

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"

Signatures

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{00A6FAF1-072E-44CF-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
File created C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\UrlSearchHooks C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\URLSearchHooks\{00A6FAF6-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\URLSearchHooks\{CFBFAE00-17A6-11D0-99CB-00C04FD64497} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\Programmable C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\Programmable C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D} C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\ C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe

"C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 195.177.78.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 206.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 218.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 128.227.79.178.in-addr.arpa udp
US 8.8.8.8:53 207.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 253.15.104.51.in-addr.arpa udp
GB 96.17.178.211:80 tcp

Files

C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL

MD5 fc7fb80d01d6d4c66ea91e9feebc2800
SHA1 488dd6c91963c1d5d4a8f82949f78d4e2b137297
SHA256 48cb732a3c288fcee8b33045b8a58622fd3dfcd56cfd9b730d90fa154207de92
SHA512 60ea3137e514e8bc8d8fb9d93da58bde11f8507d54bcb94bc6a69095d224a9236c086b7ea288d0d5a3c3b52aa9f16897601a2dbfde09a59cf5338640c9e7232a