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utiltanzuki.exe

tanzuki

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utiltanzuki.exe by tanzuki has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Update tanzuki”.
Publisher:
tanzuki  (signed and verified)

Version:
1.0.5156.29414

MD5:
1ca0afe719a793a50a61238829b4510c

SHA-1:
116be5d639c30f6be58408ee0ad7f3f94831c585

SHA-256:
e3877b60544b0ef3787d5c3eac58b71d77915d373019ec688923fe823fffac3e

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:
4/27/2024 12:46:27 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.tanzuki (M)
15.10.21.18

File size:
78.8 KB (80,664 bytes)

Product version:
1.0.5156.29414

Original file name:
tanzuki.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\tanzuki\bin\utiltanzuki.exe

Digital Signature
Signed by:
tanzuki

Authority:
VeriSign, Inc.

Valid from:
8/21/2013 3:00:00 AM

Valid to:
8/21/2015 2:59:59 AM

Subject:
CN=tanzuki, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=tanzuki, 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:
5094CECD4B5D21903C384E60AC45C6C4

File PE Metadata
Compilation timestamp:
2/12/2014 7:20:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
1536:x4Rf5ktlGcjIUWFAQCyHxDt24IlrgBPa0A/weXl0XkObXKh6Hh866XX2:xQf2ecErAQ3HevrsabBl0XFb6I56n2

Entry address:
0x13612

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Entropy:
6.1509

Code size:
70 KB (71,680 bytes)

Service
Display name:
Update tanzuki

Type:
Win32OwnProcess


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