Win32:TeslaCrypt-CF [Trj]

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Win32:TeslaCrypt-CF [Trj] detection name means that your PC is in big danger. This malware can correctly be identified as ransomware – type of malware which encrypts your files and asks you to pay for their decryption. Removing it requires some unusual steps that must be done as soon as possible.
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Win32:TeslaCrypt-CF [Trj] detection is a malware detection you can spectate in your system. It usually shows up after the provoking actions on your computer – opening the untrustworthy email messages, clicking the banner in the Web or setting up the program from dubious resources. From the moment it shows up, you have a short time to take action before it starts its malicious activity. And be sure – it is far better not to wait for these malicious actions.

What is Win32:TeslaCrypt-CF [Trj] virus?

Win32:TeslaCrypt-CF [Trj] is ransomware-type malware. It looks for the documents on your computer, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this malware also does a ton of damage to your system. It alters the networking settings in order to avoid you from reading the removal guidelines or downloading the antivirus. In some cases, Win32:TeslaCrypt-CF [Trj] can even block the setup of anti-malware programs.

Win32:TeslaCrypt-CF [Trj] Summary

In summary, Win32:TeslaCrypt-CF [Trj] ransomware actions in the infected PC are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • HTTPS urls from behavior.;
  • Enumerates running processes;
  • Reads data out of its own binary image;
  • Manipulates data from or to the Recycle Bin;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • Unconventionial language used in binary resources: Spanish (Argentina);
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Writes a potential ransom message to disk;
  • Attempts to delete or modify volume shadow copies;
  • Exhibits behavior characteristic of Alphacrypt/Teslacrypt ransomware;
  • Network activity contains more than one unique useragent.;
  • Installs itself for autorun at Windows startup;
  • Attempts to identify installed AV products by registry key;
  • Attempts to modify proxy settings;
  • Creates a copy of itself;
  • Attempts to ensure mapped drives are available from an elevated prompt or process with UAC enabled;
  • Creates a known TeslaCrypt/AlphaCrypt ransomware decryption instruction / key file.;
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Encrypting the files located on the target’s disk drives — so the victim cannot check these documents;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a headache for the last 4 years. It is difficult to realize a more dangerous virus for both individuals and companies. The algorithms utilized in Win32:TeslaCrypt-CF [Trj] (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 virus does not do all these unpleasant things without delay – it may require up to several hours to cipher all of your documents. Thus, seeing the Win32:TeslaCrypt-CF [Trj] detection is a clear signal that you must begin the elimination procedure.

Where did I get the Win32:TeslaCrypt-CF [Trj]?

General methods of Win32:TeslaCrypt-CF [Trj] injection are standard for all other ransomware variants. Those are one-day landing websites where victims are offered to download and install 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 normal notifications about shippings or bank service conditions changes. Within the email, there is a malicious 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.

Avoiding it looks quite uncomplicated, but still requires a lot of focus. Malware can hide in different places, and it is better to stop it even before it gets into your system than to rely on an anti-malware program. Common cybersecurity knowledge is just an important thing in the modern-day world, even if your relationship with a computer stays on YouTube videos. That may save you a lot of money and time which you would spend while searching for a fixing guide.

Win32:TeslaCrypt-CF [Trj] malware technical details

File Info:

name: F31F422448AA3FCA5A95.mlw
path: /opt/CAPEv2/storage/binaries/e96648002a450527ce84305e1812b6030306835c53caebc4f3bbd58543bdb3b8
crc32: 7F0AB332
md5: f31f422448aa3fca5a95f8ae1eaec880
sha1: 344858fbf0b4cfd8580e03cd23eec0cff5def439
sha256: e96648002a450527ce84305e1812b6030306835c53caebc4f3bbd58543bdb3b8
sha512: 17836202d353b95e5cc65bc65eae5b0001490da5bd577fff0e0aeed55b40e262487dc95ac7e87bffaa2d6a69652d1fb02b66eec9c36fe143f41deca23e7ae95a
ssdeep: 6144:tqpuESMEdkdC6MUgCFvzSLsGALa1j2kKLqPsjM5GXquyxxGoTSUU+rs6h2Wg:AChUgoFO1j2Xj8GaNxBOUHQ6hI
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T14E74AF3B38603075CDBED136CCE79489D794DB71E6308E0F2D4BEA5E690EA59E2041E9
sha3_384: 3c6accbe5d28360d6df35daca487f9a916a160d6feaf98ef5b2719c024a22e1f001c95ce435051647579df078cc1ddca
ep_bytes: 558bec6aff68f8d5410068a0ca410064
timestamp: 2008-06-10 01:23:31

Version Info:

CompanyName: Embarcadero Technologies, Inc.
FileDescription: Extroversion
FileVersion: 44, 190, 186, 232
InternalName: Licenses
LegalCopyright: Memories © 2077
OriginalFilename: Leveraged.exe
ProductName: Elephant Greed

Win32:TeslaCrypt-CF [Trj] also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 0055e3ef1 )
K7GWTrojan ( 0055e3ef1 )
AvastWin32:TeslaCrypt-CF [Trj]
RisingRansom.Tescrypt!8.3AF (CLOUD)
EmsisoftGen:Variant.Ransom.1640 (B)
SophosMal/Generic-R + Mal/Tinba-L
CynetMalicious (score: 100)
MAXmalware (ai score=100)
SentinelOneStatic AI – Malicious PE
AVGWin32:TeslaCrypt-CF [Trj]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Win32:TeslaCrypt-CF [Trj]?

Win32:TeslaCrypt-CF [Trj] malware is very hard to delete manually. It puts its files in multiple places throughout the disk, and can recover itself from one of the elements. Moreover, numerous changes in the windows registry, networking settings and Group Policies are fairly hard to locate and change to the initial. It is better to utilize a special program – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for malware elimination reasons.

Why GridinSoft Anti-Malware? It is very lightweight and has its databases updated just about every hour. In addition, it does not have such bugs and exposures as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for clearing away malware of any type.

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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