Krab Web - 35% Detection Rate *
Did you just run into a download or a file on your computer that is digitally signed by Krab Web? Some of the security products refers to the detected files as Trojan.Win32.Generic!BT and Adware.SwiftBrowse.CH. The detection rate for the Krab Web files collected here is 35%. Please read on for more details.
You will probably notice Krab Web when clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:
You can view the additional details from the Krab Web digital signature with the following procedure:
- Open up Windows Explorer and locate the Krab Web file
- Right-click the file and select Properties
- Click on the Digital Signatures tab
- Click on the View Certificate button
Here's a screenshot of a file that has been digitally signed by Krab Web:
As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This implies that the file has been published by Krab Web and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also view the address for Krab Web, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA and DigiCert Assured ID Code Signing CA-1 has issued the Krab Web certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
Krab Web Files
These are the Krab Web files I've gathered, thanks to the FreeFixer users.
Scanner and Detection Names
Here is the detection names for the Krab Web files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.SwiftBrowse.CH |
| AVG | Generic.A80, Generic.498, BrowseFox.F |
| AVware | Trojan.Win32.Generic!BT, Yontoo |
| Ad-Aware | Adware.SwiftBrowse.CH, Gen:Variant.Adware.SwiftBrowse.1 |
| Agnitum | Riskware.Agent!, Trojan.BPlug!, PUA.Yotoon! |
| AhnLab-V3 | Adware/Win32.SwiftBrowse, PUP/Win32.BrowseFox, Win-PUP/BrowseFox.Gen, Trojan/Win64.SwiftBrowse |
| Antiy-AVL | GrayWare[AdWare:not-a-virus]/Win32.Kranet, GrayWare[NetTool:not-a-virus]/Win64.NetFilter.a |
| Avast | Win32:Adware-BYZ [PUP], Win32:BrowseFox-FD [PUP] |
| Avira | ADWARE/BrowseFox.Gen7, Adware/BrowseFox.A.168, ADWARE/BrowseFox.Gen2 |
| Baidu-International | Adware.Win32.BrowseFox.bV, Adware.Win64.BrowseFox.AU |
| BitDefender | Adware.SwiftBrowse.CH, Gen:Variant.Adware.SwiftBrowse.1 |
| Bkav | W64.HfsAdware.D3BC |
| ClamAV | Win.Adware.Swiftbrowse-497, Win.Adware.Agent-22685 |
| Comodo | Application.Win32.RiskWare.NetFilter.D, Application.Win32.BrowseFox.JM |
| Cyren | W64/A-59c9c70a!Eldorado |
| DrWeb | Tool.NetFilter.313, Trojan.BPlug.281, Tool.NetFilter.1, Trojan.BPlug.123, Trojan.BPlug.144, Trojan.Yontoo.1734 |
| ESET-NOD32 | a variant of Win64/BrowseFox.CG, Win32/BrowseFox.V, a variant of Win32/BrowseFox.O, a variant of Win64/BrowseFox.AU, a variant of Win64/NetFilter.A potentially unsafe |
| Emsisoft | Adware.SwiftBrowse.CH (B), Gen:Variant.Adware.SwiftBrowse.1 (B) |
| F-Prot | W64/A-89938c80!Eldorado, W64/A-59c9c70a!Eldorado, W64/A-6238163f!Eldorado |
| F-Secure | Adware.SwiftBrowse.CH, Gen:Variant.Adware.SwiftBrowse.1 |
| Fortinet | Adware/BrowseFox |
| GData | Adware.SwiftBrowse.CH, Gen:Variant.Adware.SwiftBrowse.1 |
| Ikarus | AdWare.SwiftBrowse |
| Jiangmin | TrojanDownloader.Adload.way, AdWare/Yotoon.l, AdWare/Yotoon.aq, AdWare/Yotoon.m |
| K7AntiVirus | Trojan ( 0040f9921 ), Adware ( 0040f9f21 ) |
| K7GW | Trojan ( 0040f9921 ), Adware ( 0040f9f21 ) |
| Kaspersky | not-a-virus:AdWare.Win32.Yotoon.bfm, not-a-virus:NetTool.Win64.NetFilter.a |
| Kingsoft | Win32.Troj.Generic.a.(kcloud) |
| Malwarebytes | PUP.Optional.KrabWeb.A |
| McAfee | Artemis!A5C934EFC174, BrowseFox-FRR, Artemis!326CF4BF1BFD, Artemis!21A5077F9C52, Artemis!A43602FCB69E, Artemis!707577029D75 |
| McAfee-GW-Edition | Artemis, BrowseFox-FRR, Adware-BrowseFox, BehavesLike.Win64.PUPAmonetize.ph |
| MicroWorld-eScan | Adware.SwiftBrowse.CH |
| NANO-Antivirus | Riskware.Win32.Kranet.dgiwfc, Riskware.Win32.Yotoon.dfewso, Trojan.Win32.BPlug.dfogbn, Riskware.Win64.NetFilter.dlwzuy |
| Panda | Trj/CI.A |
| Qihoo-360 | HEUR/QVM10.1.Malware.Gen, Win32/Virus.NetTool.32d |
| Rising | PE:Trojan.Win32.Generic.17F0E69F!401663647 |
| Symantec | Yontoo.C, Trojan.Gen.2 |
| Tencent | Win32.Adware.Yotoon.Dxci |
| TrendMicro | TROJ_GEN.R0C1C0OAJ15 |
| TrendMicro-HouseCall | TROJ_GEN.R0C1C0OAJ15 |
| VBA32 | AdWare.Kranet, AdWare.Win64.Yotoon, AdWare.SwiftBrowse |
| VIPRE | Trojan.Win32.Generic!BT, Yontoo |
| Zillya | Adware.Yotoon.Win64.14, Adware.Kranet.Win32.476, Adware.Yotoon.Win64.7, Adware.Yotoon.Win64.3 |
| nProtect | Adware.SwiftBrowse.CH |
* How the Detection Percentage is Calculated
The detection percentage is based on that I've collected 1164 scan reports for the Krab Web files. 410 of these scan results came up with some sort of detection. You can review the full details of the scan results by examining the files listed above.
Analysis Details
The analysis is based on certificates with the following serial numbers:
- 7267fff9de9b65fb24d2ca9cb6a3e8f9
- 0572744c4944ff55fb05a9a82a78d271