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mountainbike.expextdll.dll

Mountain Bike

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module mountainbike.expextdll.dll by Mountain Bike has been detected as adware by 28 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:
Mountain Bike  (signed and verified)

Version:
1.0.5597.17971

MD5:
7e168c00a7eafa1397adfb2c02cbc2ad

SHA-1:
6072725a5b3876e4827e68a2dca9f589549438f0

SHA-256:
bccdd10ab7f2f0241fc3e7db86c983bc035b2891857865b543f5ba2109532bca

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
5/14/2024 11:55:32 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Graftor.173093
646

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.04.30

avast!
MSIL:BrowseFox-V [PUP]
2014.9-150730

AVG
Adware AdPlugin.CVO
2014.0.4311

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.15430

Bitdefender
Gen:Variant.Adware.Graftor.173093
1.0.20.600

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Browsefox-438
0.98/20163

Comodo Security
TrojWare.Win32.AltBrowse.SHHH
21941

Dr.Web
Trojan.Yontoo.1742
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Adware.Graftor.173093
8.15.04.29.11

ESET NOD32
Win64/BrowseFox.CJ potentially unwanted application
9.7.0.302.0

F-Prot
W32/S-3e9914e7
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.Graftor
11.2015-29-04_4

G Data
Gen:Variant.Adware.Graftor.173093
15.4.25

herdProtect (fuzzy)
variant of fortunitas.expextdll.dll (Adware)
2015.7.30.0

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.8.9.0

K7 AntiVirus
Trojan
13.203.15753

McAfee
Program.BrowseFox-FUZ
5600.6780

MicroWorld eScan
Gen:Variant.Adware.Graftor.173093
16.0.0.360

NANO AntiVirus
Riskware.Win32.SwiftBrowse.dodrvj
0.30.24.1357

Panda Antivirus
Generic Suspicious
15.04.30.12

Reason Heuristics
Adware.Yontoo.MountainBike
15.4.29.19

Rising Antivirus
PE:Malware.SwiftBrowse!6.1B54
23.00.65.15428

Vba32 AntiVirus
AdWare.SwiftBrowse
3.12.26.3

VIPRE Antivirus
Threat.4741131
39486

Zillya! Antivirus
Trojan.Katusha.Win32.37101
2.0.0.2161

File size:
79.7 KB (81,656 bytes)

Product version:
1.0.5597.17971

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\mountain bike\bin\mountainbike.expextdll.dll

Digital Signature
Signed by:
Mountain Bike

Authority:
VeriSign, Inc.

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

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

Subject:
CN=Mountain Bike, O=Mountain Bike, 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:
25B97080EDAA57F7AD57607CEEA9C13E

File PE Metadata
Compilation timestamp:
4/29/2015 10:00:04 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
768:wC8jy694/7LsWkFMalLepofSEtkU5yXNkOhPpEniteDH/J6/Wfed76n2YEDZ4w4x:eWuKk3lIo8kCanqeV1fwCfQm

Entry address:
0x37C0

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 0E, 2F, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 60, D2, 00, 10, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 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, 74, D0, 00, 10, C9, C2, 08, 00, B8, 23, 72, 00, 10, A3, D8, 19, 01, 10, C7, 05, DC, 19, 01, 10, 19...
 
[+]

Entropy:
6.4028

Code size:
47 KB (48,128 bytes)

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