Did you just find a download or a file on your computer that has a digital signature from Sivi Technology Limited? Some of the security products refers to the detected files as Adware.Generic.1630662 and Adware.Generic.1654328. The detection rate for the Sivi Technology Limited files collected here is 17%. Please read on for more details.
You will typically see Sivi Technology Limited when clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can view additional details from the Sivi Technology Limited certificate with the following steps:
Here's a screencap of a file that has been digitally signed by Sivi Technology Limited:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by Sivi Technology Limited and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can examine 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 Sivi Technology Limited, such as the street name, city and country.
GlobalSign CodeSigning CA - SHA256 - G2 and GlobalSign CodeSigning CA - G3 has issued the Sivi Technology Limited certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Sivi Technology Limited files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/56 | Legpat.exe |
| 24/55 | HisarahUpdate.exe |
| 1/53 | chrome.exe |
| 29/57 | LegpatUpdate.exe |
| 11/56 | YestonyUpdate.exe |
| 17/52 | Yestony.exe |
| 1/55 | chrome.exe |
| 9/55 | chrome.exe |
Here is the detection names for the Sivi Technology Limited files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.Generic.1630662, Adware.Generic.1654328 |
| AVG | Luhe.Fiha.A, Ransom_r.RP |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Adware.Generic.1630662, Adware.Generic.1654328 |
| AegisLab | Troj.Crypt.Zpack!c |
| Arcabit | Adware.Generic.D18E1C6, Adware.Generic.D193E38 |
| Avast | Win32:Malware-gen |
| Avira | TR/Crypt.ZPACK.mabb, TR/Crypt.ZPACK.sfag, TR/Crypt.ZPACK.lwjl |
| Baidu | Win32.Trojan.WisdomEyes.151026.9950.9984, Win32.Trojan.WisdomEyes.151026.9950.9999, Win32.Trojan.WisdomEyes.151026.9950.9995 |
| BitDefender | Adware.Generic.1630662, Adware.Generic.1654328 |
| Comodo | Application.Win32.CADD.A |
| CrowdStrike | malicious_confidence_100% (D) |
| Cyren | W32/Adware.JTOS-0943 |
| DrWeb | Adware.Mutabaha.1364, Adware.Mutabaha.1333, Adware.Mutabaha.1478 |
| ESET-NOD32 | a variant of Win32/ELEX.IL potentially unwanted, a variant of Win32/Obfuscated.NHQ |
| Emsisoft | Adware.Generic.1630662 (B), Adware.Generic.1654328 (B) |
| F-Secure | Adware.Generic.1630662, Adware.Generic.1654328 |
| Fortinet | Riskware/Elex |
| GData | Adware.Generic.1630662, Adware.Generic.1654328 |
| Ikarus | Trojan.Crypt, Trojan.Win32.Ghokswa |
| Invincea | trojanspy.win32.skeeyah.a!rfn |
| K7AntiVirus | Adware ( 004f1e241 ) |
| K7GW | Adware ( 004f1e241 ) |
| Malwarebytes | PUP.Optional.Ghokswa |
| McAfee | Artemis!5F20639E1B1B, RDN/Generic.grp, Artemis!07082DECE8F3 |
| McAfee-GW-Edition | Artemis, RDN/Generic.grp, Artemis!Trojan |
| MicroWorld-eScan | Adware.Generic.1630662, Adware.Generic.1654328 |
| Microsoft | Trojan:Win32/Ghokswa |
| NANO-Antivirus | Riskware.Win32.Mutabaha.edmpny, Riskware.Win32.Mutabaha.ednhch, Riskware.Win32.Mutabaha.eedhwj |
| Panda | PUP/Winzipper |
| Qihoo-360 | HEUR/QVM19.1.Malware.Gen, HEUR/QVM19.1.0000.Malware.Gen |
| Rising | Trojan.Crypto!8.364-mm1P8D7MTtJ (cloud) |
| SUPERAntiSpyware | PUP.ELEX/Variant |
| Sophos | Generic PUA AM (PUA), Generic PUA LP (PUA), Generic PUA JI (PUA) |
| Symantec | Trojan.Gen.2, Suspicious.Cloud.2, Heur.AdvML.C |
| Tencent | Win32.Adware.Malware.Skmh |
| TrendMicro | TROJ_GEN.R0CCC0EFH16 |
| VIPRE | Trojan.Win32.Generic!BT |
| ViRobot | Trojan.Win32.Z.Crypt.399768[h] |
| Yandex | Riskware.Agent! |
The detection percentage is based on that I have collected 550 scan results for the Sivi Technology Limited files. 94 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: