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1stoffer.exe

First Offer LTD

The is the installer for the WebPick InstalleRex download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The application 1stoffer.exe by First Offer has been detected as adware by 2 anti-malware scanners. It uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme. The file has been seen being downloaded from firstoffertravel.com.
Publisher:
First Offer LTD  (signed and verified)

MD5:
349e2d8660c1a20f6542eacebc4643a5

SHA-1:
eb56b12ea82bc26105acf6d48ccd72e8f8e8ff10

SHA-256:
e274233b6e280d9fe6543d9d52caa0518d3f2407276e71b6c7a6e6085a1c9319

Scanner detections:
2 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
4/19/2024 6:18:20 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:InstalleRex-BF [PUP]
2014.9-140126

AVG
MalSign.Generic
2015.0.3583

File size:
495.4 KB (507,240 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\1stoffer.exe

Digital Signature
Signed by:
First Offer LTD

Authority:
COMODO CA Limited

Valid from:
10/7/2013 5:00:00 PM

Valid to:
10/8/2014 4:59:59 PM

Subject:
CN=First Offer LTD, O=First Offer LTD, STREET=Habarzel 21 Tel Aviv, L=Tel aviv, S=Israel, PostalCode=69710, C=IL

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

Serial number:
49900242461D96CB7B045BE0A258338E

File PE Metadata
Compilation timestamp:
11/7/2013 7:31:38 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
6144:8QcvOEWZwb5dlwDfTcLOjsh1rwaxeKT85wZWm5FH6JzBx0G:8TvCwNufTcLOjsTwSJ85wrET5

Entry address:
0x1C100

Entry point:
E8, ED, 65, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 38, E0, 43, 00, E8, 9A, 0C, 00, 00, E8, DB, 4F, 00, 00, 0F, B7, F0, 6A, 02, E8, 80, 65, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 96, 01, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
6.9030

Code size:
203 KB (207,872 bytes)

The file 1stoffer.exe has been seen being distributed by the following URL.

http://firstoffertravel.com/1stOffer.exe

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