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_step8.exe

7-Zip

Igor Pavlov

The application _step8.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 web.lpes.ntpc.edu.tw.
Publisher:
Igor Pavlov

Product:
7-Zip

Description:
7z SFX

Version:
9.20

MD5:
20d1db87d6332c2965e7bd06d75f5e31

SHA-1:
c6c573e46467e1126dbe14931c9389988f424d7b

SHA-256:
4565b2c08a8ad551d7052a7e3ee7b3143d753beef3ffa633fbe5fec6d0dab49d

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/23/2024 4:57:06 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.InstallAssistant
16.8.4.19

File size:
8.6 MB (8,997,690 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

Common path:
C:\users\{user}\downloads\_step8.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):
196608:6Gw7qj0Xu+ztybcQDXB1F/sZDq7h6BvGHSsy+2unt7dHyXzaY:6Gh0Xjtyt10Dq7h2GbyinhBHY

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:
7.9977

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

Code size:
124.5 KB (127,488 bytes)

The file _step8.exe has been seen being distributed by the following URL.

http://web.lpes.ntpc.edu.tw/lptype/.../_step8.exe

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