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wzShellctx.dll

WinZiper

Chencheng Cai

The module wzShellctx.dll, “WinZiper Shell Context Menu” by Chencheng Cai has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Winziper Pvt Ltd.  (signed by Chencheng Cai)

Product:
WinZiper

Description:
WinZiper Shell Context Menu

Version:
2.2.28.0

MD5:
2ed9f59c92db9dc482fc5744200a995f

SHA-1:
818acf7b735b97943920543918979c880bcebc14

SHA-256:
9df4592d266ce944f41a93a3d7ed6653334b17e42a1705e4c42aa1ecab703b96

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
12/16/2025 12:55:56 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Winzipper (M)
16.8.4.10

File size:
174 KB (178,224 bytes)

Product version:
2.2.28.0

Copyright:
Copyright (c) 2015 Winziper Pvt Ltd. All Rights Reserved.

Original file name:
wzShellctx.dll

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\tools\wzp\omigazip_patch\wzshellctx.dll

Digital Signature
Signed by:
Chencheng Cai

Authority:
thawte, Inc.

Valid from:
8/3/2016 7:00:00 AM

Valid to:
1/18/2017 6:59:59 AM

Subject:
CN=Chencheng Cai, OU=Individual Developer, O=No Organization Affiliation, L=Beijing, S=Beijing, C=CN

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
76EA77925866248FB3EB702E5A5E225B

File PE Metadata
Compilation timestamp:
8/4/2016 9:14:02 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:6Fkns7kh+YqKujrw+QzOPy9bIR+b+2IK7x+GK:Wkh/uIVNK2+27V+n

Entry address:
0xD6E1

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 28, 4C, 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, E8, EB, 01, 10, E8, C0, 01, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 0C, 1C, 02, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, A4, 84, 01, 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:
6.0521

Developed / compiled with:
Microsoft Visual C++

Code size:
87 KB (89,088 bytes)

Approved Shell Extension
Name:
WinZipper Shell Extension

CLSID:
{DC638EEA-2BA2-4459-9C46-85A2F0BE6040}

CLSID name:
wzShellContextMenu Class


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