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plugincontainer.exe

High Stairs

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application plugincontainer.exe by High Stairs has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Service Mgr HighStairs”.
Publisher:
High Stairs  (signed and verified)

Version:
1.0.5720.8417

MD5:
c66ad71314875492496e0157cd609c1d

SHA-1:
c04022581335c93f34e7862be27c7a3c9e406e74

SHA-256:
45b76b5189df2bd3f9b278185f62c8287580a3818a8149fe4c65f5fba6b3c477

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/20/2024 1:30:45 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Threat.Win.Reputation.IMP
15.8.30.13

File size:
1.1 MB (1,199,328 bytes)

Product version:
1.0.5720.8417

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\b4bc9939-75e9-422b-af5c-653de35c4f4b\plugincontainer.exe

Digital Signature
Signed by:
High Stairs

Authority:
VeriSign, Inc.

Valid from:
6/7/2015 7:30:00 PM

Valid to:
6/7/2016 7:29:59 PM

Subject:
CN=High Stairs, O=High Stairs, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
6698E8E8576717D380DB0BBF631821E1

File PE Metadata
Compilation timestamp:
8/30/2015 7:10:43 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
24576:+pgMISshS2AnSmmRoevR5c79r3KiZX5PPgx8tyyUpR:+pgIsS2cGzcLZpi8ApR

Entry address:
0x5E714

Entry point:
E8, EF, 79, 01, 00, E9, 39, FE, FF, FF, 55, 8B, EC, 83, EC, 20, 56, 57, 6A, 08, 59, BE, 34, F0, 4B, 00, 8D, 7D, E0, F3, A5, 8B, 75, 0C, 8B, 7D, 08, 85, F6, 74, 13, F6, 06, 10, 74, 0E, 8B, 0F, 83, E9, 04, 51, 8B, 01, 8B, 70, 18, FF, 50, 20, 89, 7D, F8, 89, 75, FC, 85, F6, 74, 0C, F6, 06, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 24, B1, 4B, 00, 5F, 5E, 8B, E5, 5D, C2, 08, 00, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F, 5F, 5E, 5B, 8B, E5, 5D, 51...
 
[+]

Code size:
740.5 KB (758,272 bytes)

Service
Display name:
Service Mgr HighStairs

Type:
Win32OwnProcess

Depends on:
RPCSS


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