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installer.exe

Nano Surfer

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application installer.exe by Nano Surfer 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 the user's temporary directory. The file has been seen being downloaded from j.versscom.net.
Publisher:
Nano Surfer  (signed and verified)

MD5:
245796f856ae2fbf3dd03a7ff13b820a

SHA-1:
04cee04e79cc4a46b38a4b7d3f08a8b6ea0dc5b2

SHA-256:
4b000f5f29dbf4bd778a56242e6e589a2b9982956b82152e93b61b8eb12752d7

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
12/24/2024 4:42:44 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.NanoSurfer.Installer (M)
16.2.26.4

File size:
511 KB (523,256 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Nano Surfer

Authority:
VeriSign, Inc.

Valid from:
12/17/2014 12:00:00 AM

Valid to:
12/17/2015 11:59:59 PM

Subject:
CN=Nano Surfer, O=Nano Surfer, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
4C3408B948BFE38825B699D7ED92B282

File PE Metadata
Compilation timestamp:
12/5/2009 10:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:h7dnrMIA2We1s15AxIrbnL/G/8/3D0Fw/tN8dkmLtpHHHrh7:h7RrMlK6fbnE8/z0FmcLbH1

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9777

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

http://j.versscom.net/inst/software/CF2ACE29-115D-4662-8718-375CC82A9509/.../installer.exe

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