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wajam_afterdownload.exe

Wajam

Wajam

The file is part of Wajam, a web browser extension that injects social search integration into various search portals such as Google. The application wajam_afterdownload.exe by Wajam 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 an Internet Explorer cache folder. The file has been seen being downloaded from download.wajam.com.
Publisher:
Wajam  (signed and verified)

Product:
Wajam

Version:
1.40

MD5:
772f5ae3194e5d73c421d1917f6467dd

SHA-1:
86c09fdf89e7d94f90ac842078e438402fc98e6b

SHA-256:
a4cff16f9bea104d0a9fe2f50d2fb255cdafa552968d32fa77f5144906027f1f

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:
11/5/2024 2:41:53 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajam.Installer (M)
16.2.21.17

File size:
381 KB (390,192 bytes)

Copyright:
© Wajam. All right reserved.

Trademarks:
Wajam – Great minds search alike.

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\wajam_afterdownload.exe

Digital Signature
Signed by:
Wajam

Authority:
The USERTRUST Network

Valid from:
6/2/2011 9:00:00 PM

Valid to:
6/2/2012 8:59:59 PM

Subject:
CN=Wajam, O=Wajam, STREET=4115 St-Laurent, STREET=suite 200, L=Montreal, S=Quebec, PostalCode=H2W1Y7, C=CA

Issuer:
CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, S=UT, C=US

Serial number:
008A53AAD542C919DF7172AA6AFB312B17

File PE Metadata
Compilation timestamp:
12/5/2009 8:53:18 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:7Tq+5yUTaxIKISH258hbYkm6vNrD9vGl1CfcYXwVKzRX5R2bjFwHi7Ggo6d1FC2A:XnyUTaxxDH25EbvjDCycOh5RkwHiKg9A

Entry address:
0x36A0

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 88, A7, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 80, 40, 00, 53, FF, 15, 88, 82, 40, 00, 6A, 08, A3, B8, 63, 42, 00, E8, EE, 2E, 00, 00, A3, 04, 63, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, B0, 0C, 42, 00, FF, 15, 58, 81, 40, 00, 68, 10, A8, 40, 00, 68, 00, 5B, 42, 00, E8, F4, 29, 00, 00, FF, 15, B0, 80, 40, 00, BF, 00, C0, 42, 00, 50, 57, E8, E2, 29, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
24.5 KB (25,088 bytes)

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

http://download.wajam.com/.../wajam_afterDownload.exe

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