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21c63c073dae48cc95ab64.dll

fassurun

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module 21c63c073dae48cc95ab64.dll by fassurun has been detected as adware by 9 anti-malware scanners. 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.
Publisher:
fassurun  (signed and verified)

MD5:
6706968873356c4a9a76bea031b40d74

SHA-1:
57820e33878282535695e53641b7517886db559c

SHA-256:
50df09f011f2df721b607222b6465c1610bed2cb00f8ee1be7673ca477b7e36b

Scanner detections:
9 / 68

Status:
Adware

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

Analysis date:
4/26/2024 2:58:17 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.BPlug
7.1.1

AVG
Generic
2015.0.3345

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14920

Dr.Web
Trojan.BPlug.218
9.0.1.0263

herdProtect (fuzzy)
variant of f55471625df242169d7d64.dll (Adware)
2014.12.3.9

nProtect
Trojan-Clicker/W32.LinkSwift.197408
14.09.18.01

Reason Heuristics
PUP.fassurun.W
14.9.20.18

Sophos
Browse Fox
4.98

VIPRE Antivirus
Threat.4741131
32938

File size:
192.8 KB (197,400 bytes)

File type:
Dynamic link library (Win64 DLL)

Common path:
C:\Program Files\fassurun\bin\21c63c073dae48cc95ab64.dll

Digital Signature
Signed by:
fassurun

Authority:
VeriSign, Inc.

Valid from:
8/20/2013 7:00:00 PM

Valid to:
8/20/2015 6:59:59 PM

Subject:
CN=fassurun, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=fassurun, 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:
6EA3A2D62F7379560AF4974E60282338

File PE Metadata
Compilation timestamp:
8/14/2014 1:52:31 AM

OS version:
5.2

OS bitness:
Win64

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:qP1njdfnYakEYPDXy4VTfFGUTRQJhuK1wpt+xCib67:qP1RYEYPDXbTfFnTRQJhve2Zm7

Entry address:
0x11648

Entry point:
48, 89, 5C, 24, 08, 48, 89, 74, 24, 10, 57, 48, 83, EC, 20, 49, 8B, F8, 8B, DA, 48, 8B, F1, 83, FA, 01, 75, 05, E8, 43, 61, 00, 00, 4C, 8B, C7, 8B, D3, 48, 8B, CE, 48, 8B, 5C, 24, 30, 48, 8B, 74, 24, 38, 48, 83, C4, 20, 5F, E9, A7, FE, FF, FF, CC, CC, CC, 48, 89, 5C, 24, 10, 48, 89, 7C, 24, 18, 55, 48, 8B, EC, 48, 83, EC, 60, 48, 8B, FA, 48, 8B, D9, 48, 8D, 4D, C0, 48, 8D, 15, 75, 00, 01, 00, 41, B8, 40, 00, 00, 00, E8, DA, F4, FF, FF, 48, 8D, 55, 10, 48, 8B, CF, 48, 89, 5D, E8, 48, 89, 7D, F0, E8, B6, DD...
 
[+]

Entropy:
6.1648

Code size:
128 KB (131,072 bytes)

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