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greatwall99.exe

7-Zip

Igor Pavlov

The application greatwall99.exe has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the 7z Setup installer, however the file is not signed with an authenticode signature from a trusted source. The file has been seen being downloaded from kfb88.com and multiple other hosts.
Publisher:
Igor Pavlov

Product:
7-Zip

Description:
7z SFX

Version:
9.20

MD5:
2906ca57bb9328dbc50cb05ac61e28a4

SHA-1:
20b96614d8aa5fadb46b2d3704e3177da07ede49

SHA-256:
b64271bb3d2c1890d6522251eb26848f4845f34f98dff6a30223ef951f065412

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/18/2025 6:18:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.InstallAssistant
16.2.22.1

File size:
72.2 MB (75,719,386 bytes)

Product version:
9.20

Copyright:
Copyright (c) 1999-2010 Igor Pavlov

Original file name:
7z.sfx.exe

File type:
Executable application (Win32 EXE)

Installer:
7z Setup

Language:
English (United States)

Common path:
C:\users\{user}\downloads\greatwall99.exe

File PE Metadata
Compilation timestamp:
11/19/2010 12:27:33 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1572864:A/L6h19mD6z+mKejq9cMU+YexScY2OvE0qGjHjlj4Co1pURTsx6OyE5/c:r19muz+mXkiXj2CE0RHxEfcRe6Orc

Entry address:
0x1D262

Entry point:
55, 8B, EC, 6A, FF, 68, 20, 1E, 42, 00, 68, 5C, D2, 41, 00, 64, A1, 00, 00, 00, 00, 50, 64, 89, 25, 00, 00, 00, 00, 83, EC, 68, 53, 56, 57, 89, 65, E8, 33, DB, 89, 5D, FC, 6A, 02, FF, 15, 04, 11, 42, 00, 59, 83, 0D, 90, BD, 42, 00, FF, 83, 0D, 94, BD, 42, 00, FF, FF, 15, 00, 11, 42, 00, 8B, 0D, 70, 9D, 42, 00, 89, 08, FF, 15, FC, 10, 42, 00, 8B, 0D, 6C, 9D, 42, 00, 89, 08, A1, 64, 11, 42, 00, 8B, 00, A3, 8C, BD, 42, 00, E8, 1C, 01, 00, 00, 39, 1D, 20, 7A, 42, 00, 75, 0C, 68, EA, D3, 41, 00, FF, 15, 0C, 11...
 
[+]

Entropy:
8.0000

Developed / compiled with:
Microsoft Visual C++ v6.0

Code size:
124.5 KB (127,488 bytes)

The file greatwall99.exe has been seen being distributed by the following 3 URLs.

https://kfb88.com/.../pc

http://download1.gw99.asia/Installer/.../GreatWall99.exe

http://54.251.36.117/Installer/.../GreatWall99.exe

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