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oiassistwtd.exe

WinZip 17.5

WinZip Computing

The application oiassistwtd.exe, “WinZip 17.5 Setup” by WinZip Computing has been detected as a potentially unwanted program by 2 anti-malware scanners. This is a setup and installation application and has been known to bundle potentially unwanted software. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from install.winzip.com and multiple other hosts. While running, it connects to the Internet address inst.avg.com on port 80 using the HTTP protocol.
Publisher:
WinZip Computing  (signed and verified)

Product:
WinZip 17.5

Description:
WinZip 17.5 Setup

Version:
1,18,0,3287

MD5:
97b09fa11760fd480076c531ce295a28

SHA-1:
59a70a83fbffa4651bda0819cd797e365fb974b8

SHA-256:
b1fb897ea8bc24bf111b62684f20f940f629fd108f6dac641efe30fe18de693f

Scanner detections:
2 / 68

Status:
Potentially unwanted

Explanation:
Includes Open Install, an installer which bundles legitimate programs with offers for additional 3rd-party applications that may be unwanted by the user.

Analysis date:
4/25/2024 4:29:42 PM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/OpenInstall (variant)
8.9389

Rising Antivirus
PE:Malware.XPACK/RDM!5.1
23.00.65.14209

File size:
414.4 KB (424,392 bytes)

Product version:
1,18,0,3287

Copyright:
Copyright © 2013

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\oiassistwtd.exe

Digital Signature
Signed by:
WinZip Computing

Authority:
VeriSign, Inc.

Valid from:
3/16/2012 12:00:00 AM

Valid to:
4/13/2014 11:59:59 PM

Subject:
CN=WinZip Computing, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=WinZip Computing, L=Mansfield, S=Connecticut, 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:
5E4842AC9691630B45F8266C0ADB1206

File PE Metadata
Compilation timestamp:
4/12/2013 10:55:13 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
7.10

CTPH (ssdeep):
12288:hZ0lscVC2dgU0rIvtDJ/nDsoGcO1WK/kLl:hZ0PcprIv7/D84l

Entry address:
0x1000

Entry point:
55, 8B, EC, 81, EC, 1C, 04, 00, 00, 53, 56, 57, BE, C0, 30, 40, 00, 8D, BD, E4, FB, FF, FF, A5, A5, A5, 6A, 7E, 66, A5, 59, 33, C0, 8D, BD, F2, FB, FF, FF, F3, AB, 66, AB, BB, 04, 01, 00, 00, 53, 8D, 85, E4, FB, FF, FF, 50, FF, 15, 5C, 30, 40, 00, 66, 83, A5, EC, FD, FF, FF, 00, 33, C0, B9, 81, 00, 00, 00, 8D, BD, EE, FD, FF, FF, F3, AB, 66, AB, 8D, 85, EC, FD, FF, FF, 50, 8D, 85, E4, FB, FF, FF, 50, C7, 45, F8, FD, FF, FF, FF, E8, 3A, 01, 00, 00, 84, C0, 59, 59, 74, 15, 8D, 75, F8, 8D, BD, EC, FD, FF, FF...
 
[+]

Code size:
7.5 KB (7,680 bytes)

The file oiassistwtd.exe has been seen being distributed by the following 9 URLs.

http://install.winzip.com/5f1e9f794dfb08791e27ddcf61cb8855/.../WinZip175.exe

http://c04.inst.avg.com/.../dl.php?&sid=lanall_xp&pid=2793661&hash=df7cabe9b7e41b09c66120f1689fb64b3d7d11f7

http://inst.winzip.com/.../dl.php?&sid=lanall_xp&pid=2793661&hash=df7cabe9b7e41b09c66120f1689fb64b3d7d11f7

http://inst.winzip.com/.../dl.php?&pid=2793661

http://logc7.xiti.com/go.click?xts=180213&s2=7&p=winzip_en_francais&clic=T&type=click&url=http://inst.winzip.com/.../dl.php?&pid=2793661

http://aka-files.inst.avg.com/dl/patched/2013/05/08/.../WinZip175.exe

http://soft.telecharger.com/WinZip175.exe

http://install.winzip.com/.../WinZip175.exe

http://inst.winzip.com/.../dl.php?&pid=2793661&hash=8c7c42632ff7c7d3878a7770cfb3bbc49dc26d69

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

TCP (HTTP):
Connects to st.openinstall.com  (184.168.221.46:80)

TCP (HTTP):
Connects to oi.cloud.avg.com  (204.193.144.33:80)

TCP (HTTP):
Connects to inst.avg.com  (204.193.144.89:80)

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