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Bu_.exe

Wajam Internet Technologies Inc

The file is part of Wajam, a web browser extension that injects social search integration into various search portals such as Google. The application Bu_.exe by Wajam Internet Technologies Inc has been detected as adware 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 NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from www.socialwebsearch.co.
Publisher:
Wajam Internet Technologies Inc  (signed and verified)

MD5:
86ffc056aeae321f1360b6ca7792033f

SHA-1:
009ec12870781bf79989348466b2ed1b76b6906d

SHA-256:
176f53f07b3b159a8b2dde4edb7e08287ef24705777cf1b12ca9616426ad7ad5

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:
4/27/2024 4:11:10 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajam.WajamInternetTechnologies.Installer (M)
15.11.28.12

File size:
899.2 KB (920,784 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Wajam Internet Technologies Inc

Authority:
COMODO CA Limited

Valid from:
7/9/2013 3:00:00 AM

Valid to:
7/10/2018 2:59:59 AM

Subject:
CN=Wajam Internet Technologies Inc, O=Wajam Internet Technologies Inc, STREET=4115 Saint-Laurent Blvd, L=Montreal, S=Quebec, PostalCode=H2W 1Y7, C=CA

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

Serial number:
008DAB5910F20F42BD7B16C6EBC90BB13C

File PE Metadata
Compilation timestamp:
12/6/2009 12:53:24 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:DPWPU3+HbIXQW4hR7kjT7FtAN6ReTMB9LIjOtFUAd4L5m/szNt6z77BycStTSJRz:LH3IIOH7kXvAN6J+EmAd44yty9Qtm6O

Entry address:
0x355E

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B8, A7, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 80, 40, 00, 53, FF, 15, 88, 82, 40, 00, 6A, 08, A3, 98, 10, 43, 00, E8, D6, 2E, 00, 00, A3, E4, 0F, 43, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, E8, A7, 42, 00, FF, 15, 58, 81, 40, 00, 68, AC, A7, 40, 00, 68, E0, 07, 43, 00, E8, DC, 29, 00, 00, FF, 15, AC, 80, 40, 00, BF, 00, 70, 43, 00, 50, 57, E8, CA, 29, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
25 KB (25,600 bytes)

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

http://www.socialwebsearch.co/.../wajam_uninstall.exe

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