Win32/Virlock.AO

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Win32/Virlock.AO detection name usually means that your system is in big danger. This malware can correctly be identified as ransomware – type of malware which ciphers 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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Win32/Virlock.AO detection is a malware detection you can spectate in your computer. It frequently appears after the provoking procedures on your PC – opening the untrustworthy e-mail messages, clicking the advertisement in the Internet or setting up the program from dubious resources. From the instance it appears, you have a short time to do something about it before it begins its destructive action. And be sure – it is better not to wait for these destructive things.

What is Win32/Virlock.AO virus?

Win32/Virlock.AO is ransomware-type malware. It looks for the documents on your disks, encrypts it, and then asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this virus also does a lot of damage to your system. It changes the networking setups in order to stop you from looking for the removal manuals or downloading the anti-malware program. Sometimes, Win32/Virlock.AO can even block the setup of anti-malware programs.

Win32/Virlock.AO Summary

In total, Win32/Virlock.AO virus actions in the infected system are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Uses Windows utilities for basic functionality;
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Deletes executed files from disk;
  • Attempts to modify Explorer settings to prevent hidden files from being displayed;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files kept on the victim’s drive — so the victim cannot use these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a major problem for the last 4 years. It is hard to realize a more harmful malware for both individual users and organizations. The algorithms used in Win32/Virlock.AO (usually, 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 already exists, and possibly will exist. However, that virus does not do all these unpleasant things instantly – it can require up to a few hours to cipher all of your documents. Therefore, seeing the Win32/Virlock.AO detection is a clear signal that you must begin the clearing process.

Where did I get the Win32/Virlock.AO?

Typical tactics of Win32/Virlock.AO injection are standard for all other ransomware variants. Those are one-day landing web pages where users are offered to download the free program, so-called bait e-mails and hacktools. Bait e-mails are a relatively new method in malware spreading – you receive the email that imitates some normal notifications about shipments or bank service conditions updates. Within the email, there is a malicious 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 quite uncomplicated, but still needs tons of attention. Malware can hide in various spots, and it is much better to stop it even before it gets into your system than to rely on an anti-malware program. Standard cybersecurity knowledge is just an essential item in the modern world, even if your interaction with a computer stays on YouTube videos. That may keep you a lot of time and money which you would spend while trying to find a fix guide.

Win32/Virlock.AO malware technical details

File Info:

name: ACC64D87E01EA7BB2A5E.mlw
path: /opt/CAPEv2/storage/binaries/1e2a698326dd66985a515aaa1eb177ee324d998b0e4f1cb01333840327278083
crc32: 8278A5B7
md5: acc64d87e01ea7bb2a5e6450c1fa2e96
sha1: 0a8c467288e55b8ad5fc20113563a6e2b07a86ad
sha256: 1e2a698326dd66985a515aaa1eb177ee324d998b0e4f1cb01333840327278083
sha512: ff169b54fdf791dd76b6f98ef15681cf8248befd148b1c96ba95afc859d0408be94c0fc85217f99240b7dc1eaf8cee7fb3e2d6a9b6ad29602f871130c184af45
ssdeep: 24576:5bDKLvajOW21z2rb0r8gvxeEwGKHbxxV1BMX6n4qPW2DHTRR5PgnlAIHcU:9DBkcgJnwLHbZoXv2Lj5POhHcU
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1B16502AB0C056A6DE22F2C3DD0C34761AB096C5CB79946DB1321EF1460ED6C742F9DEA
sha3_384: 3419fd385bc707c1c5d4bca7cc36334aaab3b88e7de85ffb066c82fffa4bc57087a70a6b746c4fc029cae16914ad0201
ep_bytes: 8d3d40c148008d1dc0c3480068338900
timestamp: 2018-07-16 18:27:46

Version Info:

0: [No Data]

Win32/Virlock.AO also known as:

Bkav W32.AIDetect.malware1
Lionic Heuristic.File.Generic.00×1!p
tehtris Generic.Malware
MicroWorld-eScan Gen:Variant.TDss.18
ClamAV Win.Virus.Virlock-6332874-0
FireEye Generic.mg.acc64d87e01ea7bb
CAT-QuickHeal Ransom.PolyRansom.F3
ALYac Gen:Variant.TDss.18
Cylance Unsafe
Zillya Virus.Virlock.Win32.5
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0052b3dd1 )
Alibaba Trojan:Win32/Starter.ali2000005
K7GW Trojan ( 0052b3dd1 )
Cybereason malicious.7e01ea
Baidu Win32.Virus.Virlock.e
Cyren W32/S-ebf374ab!Eldorado
Symantec W32.Virlock!inf7
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Virlock.AO
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
Kaspersky Virus.Win32.PolyRansom.f
BitDefender Gen:Variant.TDss.18
NANO-Antivirus Virus.Win32.Virlock.dsdros
Avast Win32:Cryptor
Tencent Virus.Win32.VirLocker.j
Ad-Aware Gen:Variant.TDss.18
Emsisoft Gen:Variant.TDss.18 (B)
Comodo Virus.Win32.VirLock.GA@7lv9go
DrWeb Win32.VirLock.16
VIPRE Gen:Variant.TDss.18
TrendMicro PE_VIRLOCK.K2
McAfee-GW-Edition BehavesLike.Win32.VirRansom.tc
Trapmine malicious.high.ml.score
Sophos ML/PE-A + W32/VirRnsm-F
SentinelOne Static AI – Malicious PE
GData Gen:Variant.TDss.18
Jiangmin Trojan.Generic.clouo
Avira TR/Crypt.ZPACK.Gen
MAX malware (ai score=81)
Antiy-AVL Trojan/Generic.ASVirus.2BF
Arcabit Trojan.TDss.18
ViRobot Trojan.Win32.Virlock.Gen.A
Microsoft Trojan:Win32/Nabucur.AA
Google Detected
AhnLab-V3 Trojan/Win32.Katusha.C689920
McAfee W32/VirRansom.d
TACHYON Virus/W32.VirRansom.B
VBA32 BScope.TrojanRansom.Genasom
Malwarebytes Bladabindi.Backdoor.Njrat.DDS
TrendMicro-HouseCall PE_VIRLOCK.K2
Rising Virus.VirLock!1.A08A (CLASSIC)
Yandex Trojan.GenAsa!iar9X2sgTog
Ikarus Virus.Win32.Virlock
MaxSecure Virus.PolyRansom.b
Fortinet W32/Virlock.J
BitDefenderTheta Gen:NN.ZexaF.34606.wrW@aa3!V5di
AVG Win32:Cryptor
Panda Trj/Genetic.gen
CrowdStrike win/malicious_confidence_100% (W)

How to remove Win32/Virlock.AO?

Win32/Virlock.AO malware is incredibly hard to eliminate manually. It puts its files in multiple places throughout the disk, and can recover itself from one of the parts. In addition, various alterations in the registry, networking setups and Group Policies are pretty hard to discover and revert to the initial. It is better to utilize a special app – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for malware elimination purposes.

Why GridinSoft Anti-Malware? It is pretty light-weight and has its 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 eliminating malware of any form.

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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