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update.exe

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 update.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.
Publisher:
Wajam  (signed and verified)

MD5:
a510e23ebb41b16e6f56651868af4d7b

SHA-1:
f60803ec08ce90dfceeca48c26f3da6a7ffbfcec

SHA-256:
8c97774229461d75dfda6961d90a3693bcd29864e5e452a91db5141ed8a28c49

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:
12/25/2024 2:18:58 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajam (M)
16.7.25.9

File size:
129.9 KB (133,056 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Program Files\wajam\updater\update.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):
3072:nstajHKBvYXJLAC898VFV5nWjb8YDprfzqCmHZ40ShjeNMyEsQ2x6:nTq+P898V/Ze8YJuCm5XMyEsTx6

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)

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