Analysis Overview
SHA256
7b9b1a64a811390acb3384677420ed0508176891723708ac43cf980bf40c8701
Threat Level: Shows suspicious behavior
The file dc06ac13dbaa78b63d9d5ed3bc320325 was found to be: Shows suspicious behavior.
Malicious Activity Summary
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
Enterprise Matrix V15
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
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
| 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
| 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
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
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
| 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
| 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 |