UCBrowser.exe

UC浏览器

TAOBAO (CHINA) SOFTWARE CO.,LTD.

The application UCBrowser.exe by TAOBAO (CHINA) SOFTWARE CO.,LTD has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. While running, it connects to the Internet address yabs.yandex.ru on port 443.
Publisher:
UCWeb Inc.  (signed by TAOBAO (CHINA) SOFTWARE CO.,LTD.)

Product:
UC浏览器

Version:
6.1.2107.204

MD5:
164d27c9830ccdf485bbd1701f9e577e

SHA-1:
a9d201267787234eaa31e433824097be28e9c4a7

SHA-256:
0b613074a628964dad8259624c7055ff47eabe415ee979ff3416c4fb34212277

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
3/8/2017 9:54:02 AM UTC  (eight months ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Taobao (L)
17.3.8.4

File size:
1.1 MB (1,174,416 bytes)

Product version:
6.1.2107.204

Copyright:
Copyright 2008-2016 UCWeb Inc. All rights reserved.

Original file name:
UCBrowser.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\Program Files\ucbrowser\application\ucbrowser.exe

Digital Signature
Authority:
VeriSign, Inc.

Valid from:
6/16/2016 7:00:00 AM

Valid to:
7/15/2018 6:59:59 AM

Subject:
CN="TAOBAO (CHINA) SOFTWARE CO.,LTD.", OU=RDC, O="TAOBAO (CHINA) SOFTWARE CO.,LTD.", L=Hangzhou, S=Zhejiang, C=CN

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:
780A0032A6CE7D0B5D5452F5CDE520DC

File PE Metadata
Compilation timestamp:
3/7/2017 3:39:16 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
14.0

Entry address:
0x6FD1F

Entry point:
E8, BA, 08, 00, 00, E9, 80, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, 57, 56, 53, 33, FF, 8B, 44, 24, 14, 0B, C0, 7D, 14, 47, 8B, 54, 24, 10, F7, D8, F7, DA, 83, D8, 00, 89, 44, 24, 14, 89, 54, 24, 10, 8B, 44, 24, 1C, 0B, C0, 7D, 14, 47, 8B, 54, 24, 18, F7, D8, F7, DA, 83, D8, 00, 89, 44, 24, 1C, 89, 54, 24, 18, 0B, C0, 75, 18, 8B, 4C, 24, 18, 8B, 44, 24, 14, 33, D2, F7, F1, 8B, D8, 8B, 44, 24, 10, F7, F1, 8B, D3, EB, 41, 8B, D8, 8B, 4C, 24, 18, 8B, 54, 24, 14, 8B, 44, 24, 10, D1, EB, D1, D9, D1, EA, D1, D8...
 
[+]

Entropy:
6.7404

Code size:
594 KB (608,256 bytes)

Shell Open Command
Open type:
ftp

Command:
"C:\Program Files\ucbrowser\application\ucbrowser.exe" -- "%1"


Windows Firewall Allowed Program
Name:
chromium (mdns-in)


The executing file has been seen to make the following network communications in live environments.

TCP (HTTP SSL):
Connects to yabs.yandex.ru  (87.250.250.91:443)

TCP (HTTP SSL):
Connects to tapelogd.go.mail.ru  (217.69.133.176:443)

TCP (HTTP SSL):
Connects to r.mradx.net  (217.69.139.244:443)

TCP (HTTP SSL):
Connects to bs.yandex.ru  (213.180.193.90:443)

TCP (HTTP SSL):
Connects to stepan-fe.go.mail.ru  (217.69.133.168:443)

TCP (HTTP):
Connects to v-5-226-d2816-169.webazilla.com  (78.140.181.169:80)

TCP (HTTP):
Connects to portal.mail.ru  (94.100.180.59:80)

TCP (HTTP SSL):
Connects to pegasus.mail.ru  (217.69.133.165:443)

TCP (HTTP SSL):
Connects to likemore-go.imgsmail.ru  (217.69.139.14:443)

TCP (HTTP):
Connects to host42.rax.ru  (88.212.196.72:80)

TCP (HTTP SSL):
Connects to 203.130.61.92-BJ-CNC  (203.130.61.92:443)

TCP (HTTP SSL):
Connects to yandex.ru  (77.88.55.50:443)

TCP (HTTP):
Connects to rfko.r.smailru.net  (217.69.139.42:80)

TCP (HTTP SSL):
Connects to rfbo2.r.smailru.net  (94.100.180.76:443)

TCP (HTTP):
Connects to mobile.yandex.net  (77.88.21.110:80)

TCP (HTTP):
Connects to is-radar17.common.radar.imgsmail.ru  (185.5.137.174:80)

TCP (HTTP SSL):
Connects to inline.go.mail.ru  (217.69.139.83:443)

TCP (HTTP):
Connects to go.mail.ru  (217.69.139.51:80)

TCP (HTTP):
Connects to go.imgsmail.ru  (217.69.135.132:80)

TCP (HTTP):
Connects to b-app04-04.boldchat.com  (66.150.108.87:80)

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