Win32/LockScreen.ASF
Christopher Lucas What is Win32/LockScreen.ASF infection?
In this short article you will locate concerning the interpretation of Win32/LockScreen.ASF as well as its unfavorable effect on your computer. Such ransomware are a kind of malware that is clarified by on the internet fraudulences to require paying the ransom by a target.
In the majority of the cases, Win32/LockScreen.ASF virus will certainly instruct its targets to launch funds move for the function of reducing the effects of the amendments that the Trojan infection has introduced to the sufferer’s gadget.
Win32/LockScreen.ASF Summary
These adjustments can be as adheres to:
- Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
- A process attempted to delay the analysis task.;
- Unconventionial language used in binary resources: Russian;
- Uses Windows utilities for basic functionality;
- Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.The registry run keys perform the same action, and can be located in different locations:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
- Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
- Uses suspicious command line tools or Windows utilities;
- Ciphering the records situated on the target’s disk drive — so the sufferer can no more make use of the information;
- Preventing routine accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Win32/LockScreen.ASF
The most normal networks where Win32/LockScreen.ASF Ransomware are infused are:
- By means of phishing emails;
- As a consequence of individual winding up on a source that organizes a destructive software;
As soon as the Trojan is successfully infused, it will either cipher the data on the target’s PC or prevent the gadget from working in a correct way – while also positioning a ransom note that states the need for the victims to effect the repayment for the function of decrypting the records or recovering the documents system back to the preliminary condition. In most instances, the ransom note will show up when the customer restarts the COMPUTER after the system has currently been damaged.
Win32/LockScreen.ASF distribution networks.
In numerous corners of the globe, Win32/LockScreen.ASF grows by jumps and bounds. Nevertheless, the ransom money notes as well as methods of obtaining the ransom money amount might vary depending on certain neighborhood (regional) settings. The ransom money notes as well as tricks of extorting the ransom money quantity might vary depending on specific regional (regional) settings.
For example:
Faulty informs concerning unlicensed software application.
In specific locations, the Trojans usually wrongfully report having identified some unlicensed applications allowed on the target’s tool. The sharp then requires the individual to pay the ransom money.
Faulty statements concerning unlawful material.
In countries where software piracy is less prominent, this method is not as reliable for the cyber frauds. Conversely, the Win32/LockScreen.ASF popup alert might falsely claim to be deriving from a police organization as well as will certainly report having located youngster porn or other illegal data on the device.
Win32/LockScreen.ASF popup alert may falsely claim to be acquiring from a regulation enforcement establishment as well as will certainly report having situated kid porn or other prohibited information on the device. The alert will in a similar way contain a demand for the individual to pay the ransom money.
Technical details
File Info:
crc32: 57812D4Fmd5: 82b620a508a35eeac177085a14065fbbname: 82B620A508A35EEAC177085A14065FBB.mlwsha1: 73e4f81f51d07b4201803f285a2e10cc77a6cd09sha256: 75d16fbad7459b3f0e5afbf9b5d154960cb32d1b4ba6049ed5bc1d571beba47fsha512: 3e6735de7223319e04584d6c908c8f486523fbb093e09ffd21e1676745caa70f62e740bd5fd9c22117865e48168b2f0231e9abe9e17eec3aee15ac72202dc251ssdeep: 12288:4GXNoSIUEuPj66GrlL+mgbd0cgRPA3iwueA:4QCSd26O1uhylTwOtype: PE32 executable (GUI) Intel 80386, for MS WindowsVersion Info:
0: [No Data]
Win32/LockScreen.ASF also known as:
| GridinSoft | Trojan.Ransom.Gen |
| K7AntiVirus | Trojan ( 0055e4091 ) |
| Elastic | malicious (high confidence) |
| DrWeb | Trojan.KillProc.23006 |
| Cynet | Malicious (score: 99) |
| CAT-QuickHeal | Trojan.Dynamer.26655 |
| ALYac | Gen:Trojan.ShellStartup.GGW@amkWoHnc |
| Cylance | Unsafe |
| Zillya | Trojan.HmBlocker.Win32.3867 |
| Sangfor | Trojan.Win32.Save.a |
| Alibaba | Ransom:Win32/HmBlocker.b1f9c536 |
| K7GW | Trojan ( 0055e4091 ) |
| Cybereason | malicious.508a35 |
| Baidu | Win32.Trojan.LockScreen.bj |
| Symantec | ML.Attribute.HighConfidence |
| ESET-NOD32 | Win32/LockScreen.ASF |
| APEX | Malicious |
| Avast | Win32:Malware-gen |
| ClamAV | Win.Trojan.Agent-1178511 |
| Kaspersky | Trojan-Ransom.Win32.HmBlocker.nyty |
| BitDefender | Gen:Trojan.ShellStartup.GGW@amkWoHnc |
| NANO-Antivirus | Trojan.Win32.HmBlocker.brmegj |
| SUPERAntiSpyware | |
| MicroWorld-eScan | Gen:Trojan.ShellStartup.GGW@amkWoHnc |
| Tencent | Malware.Win32.Gencirc.10b3d782 |
| Ad-Aware | Gen:Trojan.ShellStartup.GGW@amkWoHnc |
| Sophos | Mal/Generic-S |
| Comodo | Malware@#m39wr6c9dc4q |
| BitDefenderTheta | AI:Packer.FE07DC8B20 |
| VIPRE | Trojan.Win32.Generic!BT |
| McAfee-GW-Edition | GenericR-APD!82B620A508A3 |
| FireEye | Generic.mg.82b620a508a35eea |
| Emsisoft | Gen:Trojan.ShellStartup.GGW@amkWoHnc (B) |
| Jiangmin | Trojan/HmBlocker.cma |
| Avira | TR/Rogue.8898995.1 |
| eGambit | Unsafe.AI_Score_99% |
| Antiy-AVL | Trojan[Ransom]/Win32.HmBlocker |
| Microsoft | Backdoor:Win32/Bladabindi!ml |
| Arcabit | Trojan.ShellStartup.E3DCB8 |
| GData | Gen:Trojan.ShellStartup.GGW@amkWoHnc |
| AhnLab-V3 | Trojan/Win32.HmBlocker.R66949 |
| McAfee | GenericR-APD!82B620A508A3 |
| MAX | malware (ai score=100) |
| VBA32 | Hoax.HmBlocker |
| Panda | Trj/CI.A |
| Rising | Ransom.HmBlocker!8.2A63 (CLOUD) |
| Ikarus | Trojan.SuspectCRC |
| MaxSecure | Trojan.Malware.5532116.susgen |
| Fortinet | W32/LockScreen.ASF!tr |
| AVG | Win32:Malware-gen |
| Paloalto | generic.ml |
| Qihoo-360 | Win32/Ransom.Generic.HwUBEpsA |
How to remove Win32/LockScreen.ASF ransomware?
There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.
Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your system for Win32/LockScreen.ASF files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.
Click on “Clean Now”.
When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
Are Your Protected?
GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:
Full version of GridinSoft Anti-Malware
If the guide doesn’t help you to remove Win32/LockScreen.ASF you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
