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obw_istartsurf.exe

3447_obw_istartsurf

Fuyuan Zhou

The application obw_istartsurf.exe by Fuyuan Zhou has been detected as adware by 7 anti-malware scanners. This is a setup program which is used to install the application. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from d2drfrdurj6mvo.cloudfront.net.
Publisher:
HTabp.com  (signed by Fuyuan Zhou)

Product:
3447_obw_istartsurf

Description:
HTabp

Version:
6.6.86.1606

MD5:
3d2352cc88d29a21051f728c02ca81ba

SHA-1:
222d92fec07fdac6b69d99df64ef4e9d843217d1

SHA-256:
312a413e038cdb581b9518fb7f854d48ee714ee2f088f5169f5376f02271c875

Scanner detections:
7 / 68

Status:
Adware

Analysis date:
12/25/2024 8:03:33 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

Baidu Antivirus
Adware.Win32.ELEX
4.0.3.15716

Dr.Web
Adware.Mutabaha.306
9.0.1.0197

ESET NOD32
Win32/ELEX.EH potentially unwanted (variant)
9.11942

K7 AntiVirus
Adware
13.206.16567

Malwarebytes
PUP.Optional.IStartSurf.A
v2015.07.16.03

Reason Heuristics
PUP.FuyuanZhou (M)
15.7.16.15

File size:
655.6 KB (671,328 bytes)

Product version:
6.6.86.1606

Copyright:
Copyright (C) HTabp.com 2010

Original file name:
HTabp.exe

File type:
Executable application (Win32 EXE)

Language:
English (Marea Britanie)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\obw_istartsurf.exe

Digital Signature
Signed by:
Fuyuan Zhou

Authority:
DigiCert Inc

Valid from:
1/15/2015 2:00:00 AM

Valid to:
1/20/2016 2:00:00 PM

Subject:
CN=Fuyuan Zhou, O=Fuyuan Zhou, L=Jilin, S=Jilin, C=CN

Issuer:
CN=DigiCert SHA2 Assured ID Code Signing CA, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
05BF5E9600D59EE9CB02166FF1F03A70

File PE Metadata
Compilation timestamp:
3/31/2015 10:45:11 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:Z/NAXBvXnouRKH2n+tm1h/a14HpXrr8fywqVXTmu:1Ngv4uRJnBO1qpXEfylRTmu

Entry address:
0x29EB7

Entry point:
E8, A8, C9, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, D0, 76, 47, 00, 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, A4, 71, 47, 00, C9, C2, 08, 00, CC, CC, CC, 8B, 4C, 24, 04, F7, C1, 03, 00, 00, 00, 74, 24, 8A, 01, 83, C1, 01, 84, C0, 74, 4E, F7, C1, 03, 00, 00, 00, 75, EF, 05, 00, 00, 00, 00, 8D, A4, 24, 00, 00...
 
[+]

Code size:
468.5 KB (479,744 bytes)

The file obw_istartsurf.exe has been seen being distributed by the following URL.

http://d2drfrdurj6mvo.cloudfront.net/.../obw_istartsurf.exe

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