Python/Filecoder.BU

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Python/Filecoder.BU malware detection usually means that your PC is in big danger. This virus can correctly be named as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Deleteing it requires some peculiar steps that must be done as soon as possible.
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Python/Filecoder.BU detection is a virus detection you can spectate in your computer. It generally appears after the provoking activities on your computer – opening the suspicious email, clicking the banner in the Internet or setting up the program from untrustworthy resources. From the instance it appears, you have a short time to act before it starts its destructive action. And be sure – it is far better not to wait for these malicious effects.

What is Python/Filecoder.BU virus?

Python/Filecoder.BU is ransomware-type malware. It looks for the files on your disk drive, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents inaccessible, this malware additionally does a ton of harm to your system. It changes the networking setups in order to avoid you from reading the removal guidelines or downloading the anti-malware program. Sometimes, Python/Filecoder.BU can even block the setup of anti-malware programs.

Python/Filecoder.BU Summary

Summarizingly, Python/Filecoder.BU virus activities in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Sample contains Overlay data;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Possible date expiration check, exits too soon after checking local time;
  • A file with an unusual extension was attempted to be loaded as a DLL.;
  • Creates RWX memory;
  • Anomalous file deletion behavior detected (10+);
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • The executable is compressed using UPX;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Uses Windows utilities for basic functionality;
  • Created a process from a suspicious location;
  • Collects and encrypts information about the computer likely to send to C2 server;
  • Installs itself for autorun at Windows startup;
  • CAPE detected the PyInstaller malware family;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the files located on the victim’s disk — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has been a horror story for the last 4 years. It is challenging to realize a more damaging malware for both individuals and corporations. The algorithms utilized in Python/Filecoder.BU (generally, 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 currently exists, and possibly will exist. However, that malware does not do all these horrible things instantly – it may take up to a few hours to cipher all of your documents. Thus, seeing the Python/Filecoder.BU detection is a clear signal that you need to start the removal procedure.

Where did I get the Python/Filecoder.BU?

Usual methods of Python/Filecoder.BU distribution are typical for all other ransomware examples. Those are one-day landing sites where victims are offered to download the free program, so-called bait e-mails and hacktools. Bait emails are a pretty modern strategy in malware distribution – you get the e-mail that mimics some routine notifications about shippings or bank service conditions updates. Within the e-mail, there is an infected MS Office file, or a link which opens the exploit landing site.

Malicious email spam

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

Preventing it looks fairly easy, however, still demands tons of focus. Malware can hide in various places, and it is better to prevent it even before it invades your computer than to depend on an anti-malware program. Essential cybersecurity knowledge is just an essential thing in the modern world, even if your relationship with a computer stays on YouTube videos. That may save you a lot of time and money which you would spend while looking for a fixing guide.

Python/Filecoder.BU malware technical details

File Info:

name: B26ABF7554C66FD0363C.mlw
path: /opt/CAPEv2/storage/binaries/315e9e5efbc9f88ccc978d1a52e4ac6f9b26f7dab4a5aede3d11f2da80d52b14
crc32: 8D699208
md5: b26abf7554c66fd0363c23f92c097885
sha1: 434aefdebdcdc4c9517921dde185d958d1e003f0
sha256: 315e9e5efbc9f88ccc978d1a52e4ac6f9b26f7dab4a5aede3d11f2da80d52b14
sha512: d0a12ed6cfe0ad0161315b11d733f8e2ee8a55cde8770241737fae081dd913596a5a218fc4d46bafe0296d604dd2943b035e1d3c806c03f5cc46867bed31c0ed
ssdeep: 98304:NijTXhFRgeLIlRO5sQIgEzju4/yUZBp1w:8jTV1IG5nIgEXusZB
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T114F533C3F858581DF5232A3879BBD022F879EE2353CD994F0802F7576565BEAB318618
sha3_384: c4debd473818e1d77d27d688be3bfe69aea2cb2f21dbe64551bb6fc837afa670721655cb310e9f279ea5b4bc8f7f0250
ep_bytes: 60be00b043008dbe0060fcff5789e58d
timestamp: 2018-09-04 14:43:33

Version Info:

0: [No Data]

Python/Filecoder.BU also known as:

LionicTrojan.Win32.Generic.4!c
Elasticmalicious (moderate confidence)
MicroWorld-eScanTrojan.Ransom.Pyrans.B
FireEyeGeneric.mg.b26abf7554c66fd0
CAT-QuickHealTrojan.Mauvaise.SL1
McAfeeArtemis!B26ABF7554C6
K7AntiVirusRiskware ( 0040eff71 )
AlibabaTrojan:Win32/Filecoder.70a41ae1
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.554c66
SymantecML.Attribute.HighConfidence
ESET-NOD32Python/Filecoder.BU
Paloaltogeneric.ml
BitDefenderTrojan.Ransom.Pyrans.B
AvastWin32:Malware-gen
Ad-AwareTrojan.Ransom.Pyrans.B
EmsisoftTrojan.Ransom.Pyrans.B (B)
VIPRETrojan.Ransom.Pyrans.B
McAfee-GW-EditionBehavesLike.Win32.Generic.wc
SentinelOneStatic AI – Malicious PE
Trapminesuspicious.low.ml.score
SophosGeneric ML PUA (PUA)
GDataTrojan.Ransom.Pyrans.B
AviraHEUR/AGEN.1215227
ArcabitTrojan.Ransom.Pyrans.B
MicrosoftProgram:Win32/Wacapew.C!ml
CynetMalicious (score: 100)
AhnLab-V3Malware/Gen.Generic.C2922497
ALYacTrojan.Ransom.Pyrans.B
MalwarebytesTrojan.Crypt
APEXMalicious
MaxSecureTrojan.Malware.104247514.susgen
FortinetRiskware/Filecoder
AVGWin32:Malware-gen
CrowdStrikewin/malicious_confidence_90% (W)

How to remove Python/Filecoder.BU?

Python/Filecoder.BU malware is extremely difficult to eliminate by hand. It stores its documents in multiple locations throughout the disk, and can recover itself from one of the elements. Furthermore, a number of alterations in the registry, networking settings and also Group Policies are fairly hard to find and return to the original. It is better to make use of a specific app – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the most ideal for malware removal goals.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated just about every hour. Moreover, it does not have such problems and weakness as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware perfect for eliminating malware of any kind.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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