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6d3c7ee4_stp.exe

DigiHelp

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application 6d3c7ee4_stp.exe by DigiHelp has been detected as adware by 11 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages. It is also typically executed from the user's temporary directory.
Publisher:
DigiHelp  (signed and verified)

MD5:
1516ce420e54d007d5cd004116f1683c

SHA-1:
f38a3adf12acf3e76ac4a8b8760a3038d1b97a20

SHA-256:
8bdb6a91142898a3e979ce29acb3e2a2a8b4602f1c738bee7f3ae2a659df05fb

Scanner detections:
11 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/24/2024 12:02:31 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
NSIS:BrowseFox-D [PUP]
2014.9-150302

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1532

Dr.Web
Trojan.BPlug.181
9.0.1.061

ESET NOD32
Win32/BrowseFox
9.10819

G Data
NSIS.Application.BrowseFox
15.3.24

Malwarebytes
PUP.Optional.BPlug
v2015.03.02.12

NANO AntiVirus
Trojan.Win32.BPlug.dfsehz
0.28.6.63850

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo
15.3.2.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.15228

VIPRE Antivirus
Trojan.Win32.Generic
35374

File size:
569.6 KB (583,304 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\6d3c7ee4_stp.exe

Digital Signature
Signed by:
DigiHelp

Authority:
VeriSign, Inc.

Valid from:
9/1/2014 5:00:00 PM

Valid to:
9/2/2015 4:59:59 PM

Subject:
CN=DigiHelp, O=DigiHelp, L=San Diego, 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:
1A7686F9F81F8C322CBB5D0915469B2B

File PE Metadata
Compilation timestamp:
12/5/2009 3:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:KEZTZJ1f21s15Ap/G/8/3D0Fw/tN8dkmLtpHHHrh7dAM55PceeusGA:KEHO6j8/z0FmcLbH1dAE5Pg

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:
7.9813

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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