Win32/TrojanDownloader.Small.BKO

Seeing the Win32/TrojanDownloader.Small.BKO malware detection usually means that your computer is in big danger. This malware can correctly be named as ransomware – type of malware which ciphers your files and asks you to pay for their decryption. Deleteing it requires some peculiar steps that must be taken as soon as possible.

Win32/TrojanDownloader.Small.BKO detection is a malware detection you can spectate in your system. It often shows up after the provoking procedures on your computer – opening the untrustworthy email messages, clicking the banner in the Internet or installing the program from unreliable resources. From the moment it appears, you have a short time to act until it begins its destructive activity. And be sure – it is better not to await these destructive actions.

What is Win32/TrojanDownloader.Small.BKO virus?

Win32/TrojanDownloader.Small.BKO Summary

Summarizingly, Win32/TrojanDownloader.Small.BKO malware activities in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution;
  • Dynamic (imported) function loading detected;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Created a process from a suspicious location;
  • Installs itself for autorun at Windows startup;
  • Creates a copy of itself;
  • Ciphering the documents kept on the victim’s disk — so the victim cannot open these files;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a headache for the last 4 years. It is challenging to picture a more harmful virus for both individual users and organizations. The algorithms used in Win32/TrojanDownloader.Small.BKO (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy actually exists, and possibly will exist. But that malware does not do all these terrible things instantly – it may take up to a few hours to cipher all of your documents. Therefore, seeing the Win32/TrojanDownloader.Small.BKO detection is a clear signal that you need to begin the elimination process.

Where did I get the Win32/TrojanDownloader.Small.BKO?

Routine methods of Win32/TrojanDownloader.Small.BKO injection are typical for all other ransomware variants. Those are one-day landing sites where victims are offered to download and install the free software, so-called bait emails and hacktools. Bait emails are a quite modern tactic in malware distribution – you get the email that simulates some standard notifications about deliveries or bank service conditions updates. Within the e-mail, there is an infected MS Office file, or a link which leads to the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Preventing it looks fairly easy, but still demands a lot of attention. Malware can hide in various spots, and it is much better to stop it even before it goes into your PC than to rely on an anti-malware program. Common cybersecurity awareness is just an essential thing in the modern-day world, even if your relationship with a PC remains on YouTube videos. That can save you a great deal of time and money which you would spend while searching for a fixing guide.

Win32/TrojanDownloader.Small.BKO malware technical details

File Info:

name: BFB2DB2DAAF52D8DB972.mlwpath: /opt/CAPEv2/storage/binaries/71ff49a897b67789b2b978757091d1cd2a3c0ef907211fe93cf89f56291fc4d2crc32: 4B3B31E3md5: bfb2db2daaf52d8db9723728cf1794d7sha1: f7b3763f4049fcc5acf5c508f193a16407734748sha256: 71ff49a897b67789b2b978757091d1cd2a3c0ef907211fe93cf89f56291fc4d2sha512: aca7402f24aa65958348969685f4a4fe7879202f5059120f05bef0f630de9d84dc32029892614923c8ee41123cf2bb39280bc25e30c3618c04ba6fe17c9fe679ssdeep: 384:zFKY/XBsdnSYacfN2+aqDGeil5uOwsofcVm6v7NjvzKJuGDkJuLflOxp/K:hbBsdzzaWhEmfcVH7wJuGDkJuLflOzKtype: PE32 executable (console) Intel 80386, for MS Windowstlsh: T1BDA24B13FB468B32E91062F525B6BBB6817F7924BF6042CB93C49D3F0A151E16D3681Esha3_384: 4ea72f7e93f347229f9e672281c7656c74593fb1c071b6f6d19c1bfe9119148e8b7b67405976d36188088e647430a968ep_bytes: e8d7050000e974feffff558bec6a00fftimestamp: 2021-11-29 17:53:12

Version Info:

0: [No Data]

Win32/TrojanDownloader.Small.BKO also known as:

Bkav W32.AIDetect.malware2
MicroWorld-eScan Trojan.GenericKD.38141399
FireEye Generic.mg.bfb2db2daaf52d8d
McAfee Artemis!BFB2DB2DAAF5
Cylance Unsafe
K7AntiVirus Trojan-Downloader ( 0058b5551 )
K7GW Trojan-Downloader ( 0058b5551 )
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanDownloader.Small.BKO
APEX Malicious
Kaspersky HEUR:Trojan-Ransom.Win32.Foreign.gen
BitDefender Trojan.GenericKD.38141399
Avast Win32:Malware-gen
Ad-Aware Trojan.GenericKD.38141399
Emsisoft Trojan.GenericKD.38141399 (B)
TrendMicro Ransom_Foreign.R03FC0WL321
McAfee-GW-Edition Artemis
Sophos Mal/Generic-S
Ikarus Trojan-Downloader.Win32.Small
Avira TR/Foreign.kcihk
Microsoft Trojan:Win32/Sabsik.FL.B!ml
GData Trojan.GenericKD.38141399
Cynet Malicious (score: 100)
VBA32 BScope.TrojanRansom.Foreign
ALYac Trojan.GenericKD.38141399
MAX malware (ai score=83)
TrendMicro-HouseCall Ransom_Foreign.R03FC0WL321
Rising [email protected] (RDMK:LwTrE1XQSelBJHHiV3UIcg)
Fortinet W32/Malicious_Behavior.VEX
AVG Win32:Malware-gen
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_70% (W)

How to remove Win32/TrojanDownloader.Small.BKO?

About the author

Robert Bailey

Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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