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fassurun.Repmon.dll

fassurun

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module fassurun.Repmon.dll by fassurun has been detected as adware by 9 anti-malware scanners. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
fassurun  (signed and verified)

Version:
1.0.5387.30562

MD5:
1dd8b1e44b781a9060d8fb8da0ca1c9a

SHA-1:
27974b755b3a5e458e37161a4c4aab3696aa0a9d

SHA-256:
f9b6cf770da9a42786bda0f6c33bf15f0a4c8d18796440725a10226926c3f044

Scanner detections:
9 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/27/2024 2:14:50 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Fasuru
2015.0.3334

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14102

Dr.Web
Trojan.BPlug.229
9.0.1.05190

ESET NOD32
MSIL/BrowseFox.G potentially unwanted application
7.0.302.0

F-Prot
W32/A-db42cb3b
v6.4.7.1.166

Kaspersky
not-a-virus:HEUR:AdWare.MSIL.Kranet
14.0.0.3164

McAfee
BrowseFox.b
5600.6990

Reason Heuristics
PUP.fassurun.O
14.10.2.6

VIPRE Antivirus
Threat.4741131
33120

File size:
110.3 KB (112,920 bytes)

Product version:
1.0.5387.30562

Original file name:
fassurun.Repmon.dll

File type:
Dynamic link library (Win32 DLL)

Language:
Language Neutral

Common path:
C:\Program Files\fassurun\bin\plugins\fassurun.repmon.dll

Digital Signature
Signed by:
fassurun

Authority:
VeriSign, Inc.

Valid from:
8/20/2013 5:00:00 PM

Valid to:
8/20/2015 4:59:59 PM

Subject:
CN=fassurun, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=fassurun, 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:
6EA3A2D62F7379560AF4974E60282338

File PE Metadata
Compilation timestamp:
10/1/2014 10:58:53 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
1536:IyxVIenltnuezFG/BRckg3TJmNHDjzUJHpereGpX+wYz+opO+v347iLyDbu:IyzBnbuMFGhHyJezl+3+B+vI4yfu

Entry address:
0x1B7FA

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 10, 00, 00, 00, 18, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00, 00, 00, 30, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 00, 00, 00, 00, 48, 00, 00, 00, 54, C0, 01, 00, 94, 02, 00, 00, 00, 00, 00, 00, 94, 02, 34, 00, 00, 00, 56, 00, 53, 00, 5F, 00, 56, 00, 45, 00, 52, 00, 53, 00, 49, 00, 4F, 00, 4E, 00, 5F, 00, 49, 00, 4E, 00, 46, 00, 4F, 00, 00, 00...
 
[+]

Entropy:
6.1206

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
102 KB (104,448 bytes)

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