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77.exe

7-Zip SFX

Jiajie Yin

The application 77.exe, “7z Setup SFX (x86)” by Jiajie Yin has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. It is also typically executed from the user's temporary directory.
Publisher:
Oleg N. Scherbakov  (signed by Jiajie Yin)

Product:
7-Zip SFX

Description:
7z Setup SFX (x86)

Version:
1.5.0.2478

MD5:
cca7b3736b13f9500904c8b48d832d51

SHA-1:
852e2e7f744629256dcd4af45a7d8ae9ce10d99f

SHA-256:
9899be2897f3def9cc93fc4f0c37995385b9db18dfd1f74058d19f6c42c3bcf7

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
4/23/2024 10:02:24 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.JiajieYi.Installer (M)
16.3.20.15

File size:
752.5 KB (770,608 bytes)

Product version:
1.5.0.2478

Copyright:
Copyright © 2005-2012 Oleg N. Scherbakov

Original file name:
7ZSfxMod_x86.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\77.exe

Digital Signature
Signed by:
Jiajie Yin

Authority:
WoSign CA Limited

Valid from:
5/14/2014 2:46:39 PM

Valid to:
5/15/2015 2:46:39 PM

Subject:
CN=Jiajie Yin, E=cpa.baidu@gmail.com, L=桂林市, S=广西壮族自治区, C=CN

Issuer:
CN=WoSign Class 2 Code Signing CA, O=WoSign CA Limited, C=CN

Serial number:
3F13D1662B5F2172EF525E77D131CC4E

File PE Metadata
Compilation timestamp:
5/10/2012 1:34:11 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
12288:oEvK4vimrITUbGqaRBDoe6Svqb/YA0cp5g7tvsPpd/3LRZB5zpAA6:oEvpvLUTUbGq8BMmW70H+XPzk

Entry address:
0x168CF

Entry point:
55, 8B, EC, 6A, FF, 68, 60, A0, 41, 00, 68, 60, 6A, 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, DC, 81, 41, 00, 59, 83, 0D, 24, EB, 41, 00, FF, 83, 0D, 28, EB, 41, 00, FF, FF, 15, E0, 81, 41, 00, 8B, 0D, 04, CB, 41, 00, 89, 08, FF, 15, E4, 81, 41, 00, 8B, 0D, 00, CB, 41, 00, 89, 08, A1, E8, 81, 41, 00, 8B, 00, A3, 20, EB, 41, 00, E8, 1D, 01, 00, 00, 39, 1D, D0, C7, 41, 00, 75, 0C, 68, 58, 6A, 41, 00, FF, 15, EC, 81...
 
[+]

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

Code size:
88.5 KB (90,624 bytes)

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