In this article, I am going to describe how the Olsa trojan injected right into your computer, and also how to get rid of Olsa trojan virus.
What is Olsa trojan?
| Name | Olsa |
| Infection Type | Trojan |
| Symptoms |
|
| Similar behavior | DxmStrt, Mycop, Dalexis, Ramnit, Biodata, Fakefolder |
| Fix Tool |
See If Your System Has Been Affected by Olsa trojan |
The name of this type of malware is an allusion to a well-known legend concerning Trojan Horse, that was put to work by Greeks to enter the city of Troy and win the war. Like a dummy horse that was left for trojans as a present, Olsa trojan virus is dispersed like something legit, or, at least, helpful. Harmful apps are hiding inside of the Olsa trojan virus, like Greeks within a big wooden dummy of a horse.1Trojan viruses are among the leading malware kinds by its injection frequency for quite a long period of time. And now, throughout the pandemic, when malware became significantly active, trojan viruses increased their activity, too. You can see plenty of messages on different websites, where people are grumbling about the Olsa trojan virus in their computer systems, and asking for aid with Olsa trojan virus elimination.
Trojan Olsa is a type of virus that injects right into your system, and afterwards executes various malicious functions. These features depend upon a type of Olsa trojan: it might act as a downloader for additional malware or as a launcher for an additional harmful program which is downloaded along with the Olsa trojan. During the last two years, trojans are additionally dispersed using email attachments, and in the majority of situations utilized for phishing or ransomware injection.
Olsa2 also known as
| Elastic | malicious (high confidence) |
| MicroWorld-eScan | Trojan.Bat.Salo.A |
| FireEye | Generic.mg.d12bdb084f1b6e80 |
| CAT-QuickHeal | Trojan.Orsam.A4 |
| Qihoo-360 | HEUR/QVM20.1.5CA1.Malware.Gen |
| ALYac | Trojan.Bat.Salo.A |
| Cylance | Unsafe |
| VIPRE | Trojan.Win32.Generic!BT |
| Sangfor | Malware |
| K7AntiVirus | Trojan ( 004c4cd31 ) |
| BitDefender | Trojan.Bat.Salo.A |
| K7GW | Trojan ( 004c4cd31 ) |
| Cybereason | malicious.84f1b6 |
| TrendMicro | TROJ_DROPPER.QBZ |
| Cyren | W32/Imaut.A.gen!Eldorado |
| Symantec | Trojan.Gen.2 |
| TotalDefense | Win32/SillyAutorun.AIL |
| Baidu | Multi.Threats.InArchive |
| APEX | Malicious |
| ClamAV | Win.Trojan.Pcclient-4245 |
| Kaspersky | Trojan.Script.Jobber.d |
| NANO-Antivirus | Trojan.Win32.PcClient.dgwtmn |
| Rising | Virus.Olsa!1.A24F (CLASSIC) |
| Ad-Aware | Dropped:Trojan.Generic.1624094 |
| Sophos | Troj/Olsa-A |
| Comodo | Malware@#nncvvfqmcjsy |
| F-Secure | Trojan.TR/Dropper.Gen |
| DrWeb | BackDoor.PcClient.3131 |
| Invincea | Generic ML PUA (PUA) |
| McAfee-GW-Edition | BehavesLike.Win32.Backdoor.bc |
| Emsisoft | Trojan.Bat.Salo.A (B) |
| Jiangmin | TrojanDropper.Agent.acdm |
| Avira | TR/Dropper.Gen |
| MAX | malware (ai score=87) |
| Antiy-AVL | Trojan/Win32.AGeneric |
| Kingsoft | Win32.Troj.DeepScan.a.(kcloud) |
| Microsoft | Trojan:Win32/Olsa!rfn |
| Arcabit | Trojan.Generic.D18C81E |
| AhnLab-V3 | Dropper/PcClient.Gen |
| ZoneAlarm | Trojan.Script.Jobber.d |
| GData | Dropped:Trojan.Generic.1624094 (2x) |
| Cynet | Malicious (score: 100) |
| ESET-NOD32 | multiple detections |
| McAfee | Artemis!D12BDB084F1B |
| VBA32 | Win32.Trojan.Dropper.Heur |
| Malwarebytes | Trojan.Dropper.SFXAI |
| TrendMicro-HouseCall | TROJ_DROPPER.QBZ |
| Tencent | Virus.Win32.SOLA.c |
| Yandex | Backdoor.PcClient!Whun8uuq72A |
| Ikarus | Trojan.SuspectCRC |
| Fortinet | W32/PcClient.FED!tr |
| AVG | VBS:Agent-ED [Trj] |
| Avast | VBS:Agent-ED [Trj] |
| CrowdStrike | win/malicious_confidence_80% (D) |
What are the symptoms of Olsa trojan?
- Reads data out of its own binary image;
- Unconventionial language used in binary resources: Chinese (Simplified);
- A scripting utility was executed;
- Creates a hidden or system file;
- Network activity detected but not expressed in API logs;
- Anomalous binary characteristics;
The common symptom of the Olsa trojan virus is a gradual entrance of a wide range of malware – adware, browser hijackers, et cetera. Because of the activity of these harmful programs, your personal computer becomes really lagging: malware utilizes large quantities of RAM and CPU capacities.
One more detectable result of the Olsa trojan virus existence is unidentified processes showed off in task manager. Frequently, these processes might attempt to mimic system processes, but you can recognize that they are not legit by checking out the origin of these processes. Pseudo system applications and Olsa trojan’s processes are always specified as a user’s processes, not as a system’s.
How to remove Olsa trojan virus?
- Download and install Loaris Trojan Remover.
- Open Loaris and perform a “Standard scan“.
- “Move to quarantine” all items.
- Open “Tools” tab – Press “Reset Browser Settings“.
- Approve the reset pressing “Yes” button in the appeared window.
- Restart your computer.
To get rid of Olsa trojan and also ensure that all extra malware, downloaded with the help of this trojan, will be deleted, as well, I’d recommend you to use Loaris Trojan Remover.
Olsa trojan virus is really tough to delete by hand. Its pathways are very hard to track, as well as the modifications implemented by the Olsa trojan are concealed deeply within the system. So, the chance that you will make your system 100% clean of trojans is pretty low. And do not ignore malware that has been downloaded and install with the help of the Olsa trojan virus. I believe these arguments are enough to assure that deleting the trojan virus manually is a bad plan.
Olsa removal guide
To detect and eliminate all malware on your personal computer using Loaris Trojan Remover, it’s better to use Standard or Full scan. Removable scan, as well as Custom, will check only specified folders, so these scans are not able to provide the full information.
You can observe the detects till the scan process lasts. However, to perform any actions against detected malicious items, you need to wait until the process is over, or to interrupt the scanning process.
To choose the specific action for each detected malicious items, click the button in front of the detection name of detected malware. By default, all malware will be sent to quarantine.
How to remove Olsa Trojan?
Name: Olsa
Description: Trojan Olsa is a kind of virus that infiltrates into your computer, and after that performs different destructive functions. These features depend upon a type of Olsa trojan: it can act as a downloader for many other malware or as a launcher for another destructive program which is downloaded in addition to the Olsa trojan. During the last two years, trojans are also dispersed via e-mail attachments, and most of situations utilized for phishing or ransomware infiltration.
Operating System: Windows
Application Category: Trojan
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