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4j.exe

Ostap Laponov

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application 4j.exe by Ostap Laponov has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from iframe.yourfilesdatak.asia.
Publisher:
Ostap Laponov  (signed and verified)

MD5:
814bc4165b03bcaac89893969f0259d4

SHA-1:
43278e01740ee421cf4fb53c6956c6f4e1e6edef

SHA-256:
cb2585b8665f8b465c0e66b234c82c09e0f6ea908696e9a20333bce6c0c0af2a

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses Web-Pick's 'File Product', an Installer which wraps various products and downloads and installs it silently through the process.

Analysis date:
11/24/2024 3:56:49 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.OstapLap (M)
16.6.21.22

File size:
1.8 MB (1,865,304 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\4j.exe

Digital Signature
Signed by:
Ostap Laponov

Authority:
COMODO CA Limited

Valid from:
9/9/2013 4:00:00 AM

Valid to:
9/10/2014 3:59:59 AM

Subject:
CN=Ostap Laponov, O=Ostap Laponov, STREET=Minskаya 16, L=Kiev, S=Kiev, PostalCode=04078, C=UA

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00EA64F94CDE70375038736C9F1C0960DF

File PE Metadata
Compilation timestamp:
12/2/2013 1:48:22 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
49152:5fJ/GZIkoAfhzBcFW1G3lggbG/O4kdhZY+zZ7L0hqjzsgfX+Y:5fRLkogB83rAO4GvY+tsqc0

Entry address:
0xF8F7

Entry point:
E8, 38, 3F, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 8B, 45, 08, 33, C9, 3B, 04, CD, 28, F0, 41, 00, 74, 13, 41, 83, F9, 2D, 72, F1, 8D, 48, ED, 83, F9, 11, 77, 0E, 6A, 0D, 58, 5D, C3, 8B, 04, CD, 2C, F0, 41, 00, 5D, C3, 05, 44, FF, FF, FF, 6A, 0E, 59, 3B, C8, 1B, C0, 23, C1, 83, C0, 08, 5D, C3, E8, DC, 07, 00, 00, 85, C0, 75, 06, B8, 90, F1, 41, 00, C3, 83, C0, 08, C3, E8, C9, 07, 00, 00, 85, C0, 75, 06, B8, 94, F1, 41, 00, C3, 83, C0, 0C, C3, 8B, FF, 55, 8B, EC, 56, E8, E2, FF, FF, FF, 8B, 4D, 08...
 
[+]

Entropy:
7.9489  (probably packed)

Code size:
92.5 KB (94,720 bytes)

The file 4j.exe has been seen being distributed by the following URL.

http://iframe.yourfilesdatak.asia/ccd910a50df326e730da7dd88987c5f3/sido/dl.php?id=1387377788881916044&r=http://datasafedepoty.asia/?e=wxd&clsb=1&sfx=1&osid=601&aff=1851006&publisher=1851&ip=1449258362&f=Biology-G12-uae.zip&pi=http://.../dumper?esetup=2&idos=601&op=1449258362&idb=4&wg1=http://.../dumper?esetup=1&idos=601&op=1449258362&idb=4&wg2=http://.../dumper?esetup=3&idos=601&op=1449258362&idb=4&__rnd=59ec1fd82d657bdd4f8632369976fa79

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