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clingclang_setup.exe

Cling Clang

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application clingclang_setup.exe by Cling Clang has been detected as adware by 14 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. The file has been seen being downloaded from wpc.0952.edgecastcdn.net. While running, it connects to the Internet address api.yontoo.com on port 80 using the HTTP protocol.
Publisher:
Cling Clang  (signed and verified)

MD5:
8be5cbafa4a1928a27dc78cab58e414e

SHA-1:
744356bd426ae09846952c5f0ae4be65073841ce

SHA-256:
406bdb4c365ec51d2c833668f29e4e117276960e5d014e7d90e27fbfe2858315

Scanner detections:
14 / 68

Status:
Adware

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

Analysis date:
12/25/2024 1:33:08 AM UTC  (today)

Scan engine
Detection
Engine version

Comodo Security
Application.Win32.Altbrowse.AK
17547

Dr.Web
Adware.Searcher.2574
9.0.1.0356

ESET NOD32
Win32/BrowseFox
7.9246

Fortinet FortiGate
Adware/Agent
12/22/2013

IKARUS anti.virus
not-a-virus:AdWare.Win32.Agent
t3scan.2.2.29

K7 AntiVirus
Unwanted-Program
13.174.10720

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.4509

McAfee
Artemis!8BE5CBAFA4A1
5600.7273

NANO AntiVirus
Riskware.Win32.Agent.cqycvd
0.28.0.57029

Reason Heuristics
PUP.Installer.ClingClang.Q
14.3.3.11

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.131220

Sophos
Generic PUA HP
4.96

Trend Micro House Call
TROJ_GEN.F47V1218
7.2.356

Vba32 AntiVirus
AdWare.Agent
3.12.24.3

File size:
857.7 KB (878,320 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Cling Clang

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 2:00:00 AM

Valid to:
10/8/2014 1:59:59 AM

Subject:
CN=Cling Clang, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Cling Clang, 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:
5D74FBB0061E5BD76029878075B12101

File PE Metadata
Compilation timestamp:
12/5/2009 11:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:ulTC6F8/WT8AhDRiYwR+Q+vXfqrqOmVPTC6l8B:OF8I8AdRiOvC2Nhl8B

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...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

http://wpc.0952.edgecastcdn.net/800952/.../setup.exe

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wac.edgecastcdn.net  (72.21.81.13:80)

TCP (HTTP):
Connects to service.yontoo.com  (8.25.35.148:80)

TCP (HTTP):
Connects to api.yontoo.com  (8.25.35.15:80)

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