gbstub.exe

GBStub

IncrediMail, Inc.

The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from gbstorage.stgbssint.com.
Publisher:
IncrediMail, Inc.  (signed and verified)

Product:
GBStub

Version:
1.0.1.9

MD5:
966db826b76337fe968ce9214b0b2a02

SHA-1:
e5626777f5321d144242c326a53c7e759697a48b

SHA-256:
eae7967132df0841b7c2e351f9b2b04acaf28c4d9b551afc6053c25d9c26347e

Scanner detections:
5 / 68

Status:
Inconclusive  (not enough data for an accurate detection)

Analysis date:
11/5/2024 7:03:46 AM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
W32.HfsAdware
1.3.0.6379

IKARUS anti.virus
PUA.Conduit.SearchProtect
t3scan.1.9.5.0

McAfee
Artemis!966DB826B763
5600.6740

Panda Antivirus
Trj/Chgt.O
15.06.09.08

Trend Micro House Call
Suspicious_GEN.F47V0512
7.2.160

File size:
230.5 KB (236,000 bytes)

Product version:
1.0.1.9

Copyright:
© 2014 IncrediMail, Inc.

Original file name:
GBStub

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

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

Digital Signature
Authority:
Symantec Corporation

Valid from:
3/4/2015 10:00:00 AM

Valid to:
3/5/2017 9:59:59 AM

Subject:
CN="IncrediMail, Inc.", OU=GuardBox, O="IncrediMail, Inc.", L=Redmond, S=Washington, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
0A94D8A33B5A91604406868292AF29E7

File PE Metadata
Compilation timestamp:
9/26/2011 11:21:33 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:yweqOYEUXPn1VCDKfJBovjoCEle+UdFkd7t3/Ze0eKToM54kh4Qyp4uXGbQXvlgV:PEUXamfJ/1Qrkd7NZgu4QyNXMQdg8O

Entry address:
0x39E3

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, D8, 91, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B8, 80, 40, 00, 55, FF, 15, C0, 82, 40, 00, 6A, 08, A3, B8, 2E, 47, 00, E8, 37, 2A, 00, 00, 55, 68, B4, 02, 00, 00, A3, D0, 2D, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 1C, 93, 40, 00, FF, 15, 84, 81, 40, 00, 68, 04, 93, 40, 00, 68, C0, AD, 46, 00, E8, 19, 27, 00, 00, FF, 15, B4, 80, 40, 00, 50, BF, A0, 30, 4C, 00, 57, E8, 07, 27, 00, 00...
 
[+]

Entropy:
7.8128

Packer / compiler:
Nullsoft install system v2.x

Code size:
28 KB (28,672 bytes)

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

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