Analysis Overview
SHA256
1b41a17f665da5aa94b2ca75031ade1dd760c8a6bf95e4a5e4cb0563e6200dc5
Threat Level: Likely malicious
The file b250c295ec5bfe1575a29b350a13f688 was found to be: Likely malicious.
Malicious Activity Summary
Adds policy Run key to start application
Loads dropped DLL
Installs/modifies Browser Helper Object
Drops file in System32 directory
Unsigned PE
Modifies Internet Explorer start page
Modifies registry class
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-04 14:05
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-04 14:05
Reported
2024-03-04 14:07
Platform
win7-20240221-en
Max time kernel
119s
Max time network
124s
Command Line
Signatures
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\nvctrl.exe = "nvctrl.exe" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{72853161-30C5-4D22-B7F9-0BBC1D38A37E} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B4F3A835-0E21-4959-BA22-42B3008E02FF} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\ | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\hp8BDB.tmp | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ncompat.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File created | C:\Windows\SysWOW64\ncompat.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File created | C:\Windows\SysWOW64\interf.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\Search | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\SearchUrl | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies Internet Explorer start page
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "about:blank" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\ = "Nothing" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ = "C:\\Windows\\SysWow64\\hp8BDB.tmp" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe
"C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe"
Network
Files
\Windows\SysWOW64\hp8BDB.tmp
| MD5 | aaa4d8f2e5259a64da931b1d99d2a615 |
| SHA1 | 608acb7476ff36f0a7f4254888fe15fa8403097c |
| SHA256 | c1951c3add8a86ffff249160c215f1da19c55b25a389856d26925ebe4941732c |
| SHA512 | 4211beba14922a36284a74526d7cec77b089d225dd624ecd2f335e5880753d70b15e2518c5bda39846cedf94ab2058a0fe07451dc393c327031b86640cc74d8d |
\Windows\SysWOW64\interf.tlb
| MD5 | aa8c73f100420cbdfda7ddc4c036d3b5 |
| SHA1 | fb9d2a76b38464147cd754dafd50878b869876ff |
| SHA256 | 54db2eb0c7e7bf1b533b58f48a1f1af54fe3df1c2e48de20f1864cc442b5f63b |
| SHA512 | e97532d2ced7897e097892de51d36f254d4b01b2ff9c9bfaee6ff661172acde7837dbb530b129dca0bad9f9c65f0109544f4da73e04f137845ccf21dae10880a |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-04 14:05
Reported
2024-03-04 14:07
Platform
win10v2004-20240226-en
Max time kernel
104s
Max time network
113s
Command Line
Signatures
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\nvctrl.exe = "nvctrl.exe" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.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\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\ | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\hp730D.tmp | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\ncompat.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File created | C:\Windows\SysWOW64\ncompat.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| File created | C:\Windows\SysWOW64\interf.tlb | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\Search | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\SearchUrl | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies Internet Explorer start page
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "about:blank" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22} | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\ = "Nothing" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ = "C:\\Windows\\SysWow64\\hp730D.tmp" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe
"C:\Users\Admin\AppData\Local\Temp\b250c295ec5bfe1575a29b350a13f688.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.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 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
C:\Windows\SysWOW64\hp730D.tmp
| MD5 | aaa4d8f2e5259a64da931b1d99d2a615 |
| SHA1 | 608acb7476ff36f0a7f4254888fe15fa8403097c |
| SHA256 | c1951c3add8a86ffff249160c215f1da19c55b25a389856d26925ebe4941732c |
| SHA512 | 4211beba14922a36284a74526d7cec77b089d225dd624ecd2f335e5880753d70b15e2518c5bda39846cedf94ab2058a0fe07451dc393c327031b86640cc74d8d |
C:\Windows\SysWOW64\interf.tlb
| MD5 | aa8c73f100420cbdfda7ddc4c036d3b5 |
| SHA1 | fb9d2a76b38464147cd754dafd50878b869876ff |
| SHA256 | 54db2eb0c7e7bf1b533b58f48a1f1af54fe3df1c2e48de20f1864cc442b5f63b |
| SHA512 | e97532d2ced7897e097892de51d36f254d4b01b2ff9c9bfaee6ff661172acde7837dbb530b129dca0bad9f9c65f0109544f4da73e04f137845ccf21dae10880a |