Categories: Malware

BrowserModifier:Win32/Vonteera malicious file

The BrowserModifier:Win32/Vonteera 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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What BrowserModifier:Win32/Vonteera virus can do?

  • Creates RWX memory
  • Detected script timer window indicative of sleep style evasion
  • A process attempted to delay the analysis task.
  • Attempts to connect to a dead IP:Port (10 unique times)
  • A named pipe was used for inter-process communication
  • Network anomalies occured during the analysis.
  • Reads data out of its own binary image
  • A process created a hidden window
  • Performs some HTTP requests
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • A scripting utility was executed
  • Uses Windows utilities for basic functionality
  • Detects Sandboxie through the presence of a library
  • Detects the presence of Wine emulator via function name
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Network activity contains more than one unique useragent.
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Checks the version of Bios, possibly for anti-virtualization
  • Detects VirtualBox through the presence of a file
  • Detects VirtualBox through the presence of a registry key
  • Detects VMware through the presence of a file
  • Detects VMware through the presence of a registry key
  • Attempts to modify browser security settings
  • Collects information to fingerprint the system
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

Related domains:

s3.amazonaws.com
ocsp.digicert.com
flashcart-helper.googlecode.com
www.gogostats.info
accounts.youtube.com
clients2.googleusercontent.com
fonts.gstatic.com
ocsp.pki.goog
curl.haxx.se
www.acdcads.com

How to determine BrowserModifier:Win32/Vonteera?


File Info:

crc32: 2FA70297md5: 986297ce826e86477cf9003ad499945cname: 986297CE826E86477CF9003AD499945C.mlwsha1: 84e201978701459487a31e54438efa0dea612e17sha256: 41ee88db50b0110c301b6769eefe2169157640776d114702c271d0481fe479d0sha512: a8b1f985502f2848f556ecc8bcf2db2678b70c0673b891219bdfdad077b56d0556f46d49b5d24b3cbc51d1975a2c727fa51f3720c8e33a8de1aa72e70d174b78ssdeep: 12288:Q5ILkfA7D8ZHHLzmMYnBLr2jD7HXXgjdOXtAAC0s:aILkA3iHLwh6D7HngjdOXOAXstype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2015InternalName: 7zFM.exeFileVersion: 9.22CompanyName: Igor PavlovProductName: 7-ZipProductVersion: 9.22FileDescription: 7-Zip File ManagerOriginalFilename: 7zFM.exeTranslation: 0x0409 0x04b0

BrowserModifier:Win32/Vonteera also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Adware ( 004ba2e11 )
Elastic malicious (high confidence)
DrWeb Adware.Volaro.8
Cynet Malicious (score: 99)
ALYac Gen:Trojan.Downloader.CmMfamIyyupi
Cylance Unsafe
Sangfor Ransom.Win32.Blocker.krde
CrowdStrike win/malicious_confidence_100% (D)
K7GW Adware ( 004ba2e11 )
Cybereason malicious.e826e8
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Adware.Vonteera.J
APEX Malicious
Avast Win32:Adware-CZS [Adw]
Kaspersky Trojan-Ransom.Win32.Blocker.krde
BitDefender Gen:Trojan.Downloader.CmMfamIyyupi
NANO-Antivirus Trojan.Win32.Agent.dyupsx
MicroWorld-eScan Gen:Trojan.Downloader.CmMfamIyyupi
Tencent Win32.Trojan.Blocker.Htvm
Ad-Aware Gen:Trojan.Downloader.CmMfamIyyupi
Sophos Generic PUA IE (PUA)
Comodo ApplicUnwnt@#36h45kkflta7e
BitDefenderTheta AI:Packer.423A086E1F
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.gc
FireEye Generic.mg.986297ce826e8647
Emsisoft Gen:Trojan.Downloader.CmMfamIyyupi (B)
SentinelOne Static AI – Malicious PE
Jiangmin TrojanDropper.Agent.gjyl
Avira TR/Vonteera.A.284
Antiy-AVL Trojan/Generic.ASMalwS.163995D
Microsoft BrowserModifier:Win32/Vonteera
GData Gen:Trojan.Downloader.CmMfamIyyupi
AhnLab-V3 Trojan/Win32.Generic.R163962
Acronis suspicious
McAfee Artemis!986297CE826E
MAX malware (ai score=87)
VBA32 BScope.Adware.Volaro
Malwarebytes Adware.Vonteera
Panda Trj/CI.A
Yandex Trojan.GenAsa!X8fmaUltJQE
Ikarus Trojan.Vonteera
Fortinet Riskware/Vonteera
AVG Win32:Adware-CZS [Adw]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HgIASRkA

How to remove BrowserModifier:Win32/Vonteera?

  • 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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