Categories: Adware

Adware.Yontoo (file analysis)

The Adware.Yontoo 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 Adware.Yontoo virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (1 unique times)
  • Presents an Authenticode digital signature
  • Creates RWX memory
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Creates a copy of itself

Related domains:

ocsp.verisign.com
sf.symcd.com
install.specialboxsite.com

How to determine Adware.Yontoo?


File Info:

crc32: 85ECD906md5: 937a836155e9a33e9e4902d2953ff167name: SpecialBoxUninstaller.exesha1: 68efd3f9d9abb583bc4c641e68fff296b4acdc08sha256: 8d0f57057f6fce840502b4e1628a9e16e021c4d4af5eadf4a9f54a895b4d48e3sha512: b8b319744cbfd3073fe84194d1d60b55d468247ccd60ebc785c2b6a70e05d390e6685353da57c1850cd9c41ca5fb2cc7b6282689ffa9ab8eed6648e4f4036122ssdeep: 6144:hcnpVZFphwVEufwj1hW6AAgKjIOvuJaL0NVXBVcmiaNbXPpUQ2cQr0tZ5/ai0kPG:hcnpVZFphwVEuIj1hVIeqRa/Qr5pbpctype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: Assembly Version: 1.0.0.0InternalName: Special Box Uninstaller.exeFileVersion: 1.0.0.0ProductVersion: 1.0.0.0FileDescription: OriginalFilename: Special Box Uninstaller.exe

Adware.Yontoo also known as:

MicroWorld-eScan Gen:Variant.Adware.MSILPerseus.1523
FireEye Generic.mg.937a836155e9a33e
CAT-QuickHeal PUA.AdwareFC.S7914100
ALYac Gen:Variant.Adware.MSILPerseus.1523
Malwarebytes Adware.Yontoo
VIPRE Trojan.Win32.Generic!BT
K7AntiVirus Adware ( 004c4fe71 )
BitDefender Gen:Variant.Adware.MSILPerseus.1523
K7GW Adware ( 004c4fe71 )
Cybereason malicious.155e9a
TrendMicro TROJ_GEN.R002C0GGU19
F-Prot W32/S-4623373a!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Adware.BrowseFox.O
APEX Malicious
GData Gen:Variant.Adware.MSILPerseus.1523
Kaspersky not-a-virus:HEUR:AdWare.MSIL.BrowseFox.gen
Alibaba AdWare:MSIL/BrowseFox.f516eb5d
NANO-Antivirus Riskware.Win32.Yontoo.eutrba
AegisLab Adware.MSIL.Generic.2!c
Avast MSIL:BrowseFox-IV [Adw]
Ad-Aware Gen:Variant.Adware.MSILPerseus.1523
Emsisoft Application.BrowserExt (A)
Comodo Application.MSIL.BrowseFox.AO@60es5y
F-Secure Adware.ADWARE/BrowseFox.Gen7
DrWeb Trojan.Yontoo.1735
Zillya Adware.BrowseFoxCRTD.Win32.5279
Invincea heuristic
McAfee-GW-Edition Artemis!PUP
Sophos Generic PUA GI (PUA)
Ikarus PUA.Multiplug
Cyren W32/S-4623373a!Eldorado
Webroot Pua.Browsefox
Avira ADWARE/BrowseFox.Gen7
MAX malware (ai score=60)
Antiy-AVL Trojan/Win32.TSGeneric
Endgame malicious (high confidence)
Arcabit Trojan.Adware.MSILPerseus.D5F3
SUPERAntiSpyware PUP.SpecialBox/Variant
AhnLab-V3 PUP/Win32.BrowseFox.R152414
ZoneAlarm not-a-virus:HEUR:AdWare.MSIL.BrowseFox.gen
Microsoft BrowserModifier:Win32/Foxiebro
McAfee Artemis!937A836155E9
VBA32 TScope.Trojan.MSIL
Cylance Unsafe
TrendMicro-HouseCall TROJ_GEN.R002C0GGU19
Tencent Malware.Win32.Gencirc.10b618d4
Yandex PUA.Agent!
SentinelOne DFI – Malicious PE
eGambit Unsafe.AI_Score_99%
Fortinet Adware/Generic
AVG MSIL:BrowseFox-IV [Adw]
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_80% (D)
Qihoo-360 Generic/Virus.Adware.d0c

How to remove Adware.Yontoo?

  • 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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