What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Win32/Expiro.CM detection usually means that your computer is in big danger. This virus can correctly be named as ransomware – sort of malware which ciphers your files and forces you to pay for their decryption. Removing it requires some specific steps that must be taken as soon as possible.
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Win32/Expiro.CM detection is a virus detection you can spectate in your computer. It often shows up after the preliminary activities on your computer – opening the untrustworthy e-mail messages, clicking the banner in the Internet or setting up the program from unreliable sources. From the moment it appears, you have a short time to do something about it before it starts its malicious activity. And be sure – it is much better not to wait for these destructive effects.

What is Win32/Expiro.CM virus?

Win32/Expiro.CM is ransomware-type malware. It looks for the files on your disk drives, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this malware additionally does a ton of damage to your system. It changes the networking setups in order to avoid you from checking out the elimination articles or downloading the antivirus. In rare cases, Win32/Expiro.CM can also prevent the setup of anti-malware programs.

Win32/Expiro.CM Summary

Summarizingly, Win32/Expiro.CM ransomware actions in the infected system are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • Authenticode signature is invalid;
  • CAPE detected the Gandcrab malware family;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings;
  • Anomalous binary characteristics;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Ciphering the documents located on the target’s disk drive — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of security tools

Ransomware has actually been a nightmare for the last 4 years. It is difficult to picture a more damaging malware for both individual users and organizations. The algorithms used in Win32/Expiro.CM (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. However, that virus does not do all these bad things instantly – it may take up to several hours to cipher all of your files. Hence, seeing the Win32/Expiro.CM detection is a clear signal that you should begin the elimination procedure.

Where did I get the Win32/Expiro.CM?

Usual methods of Win32/Expiro.CM injection are usual for all other ransomware examples. Those are one-day landing websites where users are offered to download the free program, so-called bait e-mails and hacktools. Bait emails are a quite new method in malware spreading – you receive the email that imitates some normal notifications about shippings or bank service conditions shifts. Within the email, there is a malicious MS Office file, or a link which leads to the exploit landing site.

Malicious email spam

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

Preventing it looks pretty uncomplicated, however, still needs tons of awareness. Malware can hide in various spots, and it is far better to prevent it even before it goes into your PC than to rely upon an anti-malware program. Common cybersecurity awareness is just an important item in the modern-day world, even if your interaction with a computer remains on YouTube videos. That can keep you a lot of time and money which you would spend while seeking a solution.

Win32/Expiro.CM malware technical details

File Info:

name: 884BB861C49B44885BD3.mlw
path: /opt/CAPEv2/storage/binaries/3e6262a3140158898cf84f87cc6569a139424a5d5b008a6f4bf00ca7c88b5f0d
crc32: 51206677
md5: 884bb861c49b44885bd3ef2d1ea7ba49
sha1: 6eb0fab917a7085c47b2e50ccf1fccd5e5afa101
sha256: 3e6262a3140158898cf84f87cc6569a139424a5d5b008a6f4bf00ca7c88b5f0d
sha512: 06c9ed663e95c2c8ece643b885efaaea1f1298522e752e36c4b7be429e1d6a0a641fd1393d5fa9388d7eb33d22fadba948f1d85407e2c42608ebf1e98e547c3d
ssdeep: 24576:l+6kN0Djsf9nz4mloFQnpXUMPQDR6q79dA:sQDYf5zaCpXxPuR6E9dA
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T18E55121DEA8161A3E0F21F3CF8B0BA25858D3D103F453AEB65E395A59C722F6583B543
sha3_384: 53f3a237d52b392785aef32a874761d79a99e6a39de77afc3b9dd2f08755d51b4cd2e8f88c9e1f261d2d953384b8649e
ep_bytes: 558bec83ec4c68e8030000ff1598a000
timestamp: 2018-03-04 18:10:15

Version Info:

0: [No Data]

Win32/Expiro.CM also known as:

Elasticmalicious (high confidence)
CrowdStrikewin/malicious_confidence_100% (D)
ESET-NOD32a variant of Win32/Expiro.CM
CynetMalicious (score: 100)
AvastWin32:RansomX-gen [Ransom]
EmsisoftWin32.Expiro.Gen.7 (B)
MAXmalware (ai score=84)
RisingRansom.GandCrab!1.B8D6 (CLASSIC)
SentinelOneStatic AI – Malicious PE
AVGWin32:RansomX-gen [Ransom]

How to remove Win32/Expiro.CM?

Win32/Expiro.CM malware is very difficult to erase by hand. It stores its documents in multiple places throughout the disk, and can restore itself from one of the parts. Moreover, numerous alterations in the registry, networking setups and Group Policies are really hard to find and revert to the original. It is much better to use a specific program – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for virus elimination reasons.

Why GridinSoft Anti-Malware? It is really lightweight and has its detection databases updated just about every hour. Moreover, it does not have such problems and exploits as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for removing 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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