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followrules.dll

Follow Rules

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module followrules.dll by Follow Rules has been detected as adware by 16 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. The file has been seen being downloaded from install-cdn.followrulessoftware.com.
Publisher:
Follow Rules  (signed and verified)

Product:
Follow Rules

Version:
1.0.0.7

MD5:
e07e33c1878406dc4578caa028c68687

SHA-1:
2befe0411c0d1b3f928b65bd4adf56b5db49e5c5

SHA-256:
0c74cc39d7a0e0455bef0e42f79e33feaffc0a68fcef8a5aeef24aff0958ade9

Scanner detections:
16 / 68

Status:
Adware

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

Analysis date:
11/24/2024 11:11:37 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/BrowseFox.Gen2
7.11.217.28

avast!
MSIL:BrowseFox-S [PUP]
150303-0

AVG
Generic
2016.0.3171

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15314

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Browsefox-411
0.98/21511

Dr.Web
Trojan.Yontoo.1016
9.0.1.05190

ESET NOD32
Win32/BrowseFox.AE potentially unwanted application
7.0.302.0

F-Prot
W32/S-f64f6ec1
v6.4.7.1.166

herdProtect (fuzzy)
variant of dynamocombobho.dll (Adware)
2015.6.20.6

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.8.6.0

K7 AntiVirus
Trojan
13.200.15259

Malwarebytes
PUP.Optional.FollowRules.A
v2015.03.14.12

NANO AntiVirus
Trojan.Win32.Yontoo.dnkubo
0.30.0.296

Reason Heuristics
PUP.Yontoo
15.3.14.0

Vba32 AntiVirus
AdWare.MSIL.Agent
3.12.26.3

File size:
262.7 KB (269,040 bytes)

Product version:
1.0.0.7

Copyright:
(c) Follow Rules. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\content.ie5\nhwq7hbw\followrules.dll

Digital Signature
Signed by:
Follow Rules

Authority:
VeriSign, Inc.

Valid from:
1/10/2015 4:00:00 PM

Valid to:
1/11/2016 3:59:59 PM

Subject:
CN=Follow Rules, O=Follow Rules, 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:
360C16AC576B09F5DFA927EA0089856F

File PE Metadata
Compilation timestamp:
2/23/2015 5:06:59 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:qmiYckCqEbUViVqUsVNXBB+/DFK3wY+K19ZKT3h2fjcEy:qmiYckOiiVMrXBdD9ZwEAx

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, D8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 4C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Entropy:
6.0740

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

The file followrules.dll has been seen being distributed by the following URL.

http://install-cdn.followrulessoftware.com/bed?r=2015022403&bet=3

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