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vstub.exe

Wajamu

The file is part of Wajam, a web browser extension that injects social search integration into various search portals such as Google. The application vstub.exe by Wajamu has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is also typically executed from the user's temporary directory.
Publisher:
Wajamu  (signed and verified)

MD5:
a94c3a80d638fa536ba3ef70f5d534ff

SHA-1:
acb96ab799fc084f4c0103b7d7764de16d242b1c

SHA-256:
d58e7dc7b8c8c8243fc0c865670990c388643944faf47e3e3402730807321c0a

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 2:54:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajam (M)
16.11.6.5

File size:
259.4 KB (265,576 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\vstub.exe

Digital Signature
Signed by:
Wajamu

Authority:
Thawte, Inc.

Valid from:
8/25/2013 9:00:00 PM

Valid to:
8/26/2014 8:59:59 PM

Subject:
CN=Wajamu, O=Wajamu, L=Herzlia, S=Israel, C=IL

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
254859747F512412BB92CB81D0C020A7

File PE Metadata
Compilation timestamp:
4/8/2014 5:52:38 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:xEzppZrEzppZeEir3Mj2DoIB+f622ZAqqqqWtW3w0pUPZ60msnru+vikMPLdKfob:xEVpVEVpDibwWvBfDtW3wKkRdk

Entry address:
0x8EF3

Entry point:
00, 00, 05, 00, 01, 00, 00, 00, 00, 00, 00, A0, 04, 00, 00, 04, 00, 00, 3B, 7E, 04, 00, 02, 00, 40, 81, 00, 00, 10, 00, 00, 10, 00, 00, 00, 00, 10, 00, 00, 10, 00, 00, 00, 00, 00, 00, 10, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 8C, 64, 02, 00, B4, 00, 00, 00, 00, 20, 03, 00, E0, E4, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FE, 03, 00, 68, 0F, 00, 00, 00, 10, 04, 00, 90, 1C, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Code size:
114 KB (116,736 bytes)

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