Categories: Malware

3721 (file analysis)

The 3721 is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What 3721 virus can do?

  • Attempts to connect to a dead IP:Port (3 unique times)
  • Creates RWX memory
  • Reads data out of its own binary image
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • Attempts to modify proxy settings
  • Anomalous binary characteristics

Related domains:

z.whorecord.xyz
a.tomx.xyz
www.bing.com
www.uzzf.com
pic.uzzf.com
nz.qqtn.com

How to determine 3721?


File Info:

crc32: 0CFC9DA0md5: b40ce944ebf581cb99627c4367e8d4e3name: realproducerplusszl.exesha1: a1b7c2fa36358168b0b0c95ef8b56180d9da9a6fsha256: a71b72c3ae454f097d5e36ab2d7eb64cf12e95f7c0226d30af8b02781a4d0be3sha512: 573f6ccbab8a7e6ae85270d5fdd26f970636e79e7b4c90fa181985b87ce3e354e8cb41e8f2a7b80e0c9e91ebc39fe89f11beb890be3e4bac9a5b06c511f6569cssdeep: 393216:8Tap7H+qNh7bbWLQkIj9/rrJrBH0Hm9fa89:+g7eu7vWLQk+VrjUHmFtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

3721 also known as:

Bkav W32.FamVT.StartPage.e.Trojan
MicroWorld-eScan Trojan.StartPage.ZZT
CAT-QuickHeal Trojan.ZAgent.r4
McAfee Artemis!B40CE944EBF5
Malwarebytes Trojan.Startpage
K7AntiVirus Adware ( 000050001 )
K7GW Adware ( 000050001 )
TheHacker Trojan/Agent.adv
Agnitum Trojan.DL.Agent!ORb7mw1twy8
F-Prot REG/StartPage
Symantec WS.Reputation.1
Norman DLoader.SHHS
TotalDefense Tnega.XAVF!suspicious
TrendMicro-HouseCall VBS_PASTA.ZX
Avast Win32:Trojan-gen
Kaspersky Trojan.Win32.StartPage.balf
NANO-Antivirus Trojan.Reg.StartPage.bdjfd
Tencent Win32.Trojan.Startpage.Pbyq
Ad-Aware Trojan.StartPage.ZZT
Comodo TrojWare.Win32.StartPage.~ZZT
F-Secure Trojan.StartPage.ZZT
DrWeb Trojan.StartPage.54021
VIPRE Trojan.StartPage
TrendMicro VBS_PASTA.ZX
McAfee-GW-Edition StartPage-NY!reg
Sophos 3721
Cyren REG/StartPage
Jiangmin Trojan/StartPage.run
Avira TR/StartPage.zzta
Antiy-AVL Trojan/Win32.StartPage.balf
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Spyware:Win32/CnsMin
GData Win32.Trojan.Agent.PKKV0I
AhnLab-V3 Win-Trojan/Startpage.117587
AVware Trojan.StartPage
VBA32 REG.StartPage.NAN
Baidu-International Trojan.Win32.StartPage.balf
ESET-NOD32 REG/StartPage.NAN
Rising NORMAL:Trojan.Win32.WinREG.StartPage.g!1599298
Ikarus Trojan.Win32.StartPage
Fortinet W32/WSearch
AVG Toolbar.FC
Panda Trj/OCJ.E
Qihoo-360 Malware.Radar05.Gen

How to remove 3721?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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