Worm:Win32/Scrolo.A

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Worm:Win32/Scrolo.A infection?

In this post you will discover regarding the interpretation of Worm:Win32/Scrolo.A and its negative impact on your computer system. Such ransomware are a type of malware that is specified by on-line fraudulences to demand paying the ransom money by a target.

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Most of the instances, Worm:Win32/Scrolo.A virus will certainly advise its targets to initiate funds move for the objective of reducing the effects of the changes that the Trojan infection has introduced to the sufferer’s gadget.

Worm:Win32/Scrolo.A Summary

These adjustments can be as follows:

  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial binary language: Russian;
  • Unconventionial language used in binary resources: Russian;
  • The executable is compressed using UPX;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to modify Explorer settings to prevent file extensions from being displayed;
  • Attempts to modify Explorer settings to prevent hidden files from being displayed;
  • Ciphering the files situated on the victim’s disk drive — so the sufferer can no longer utilize the data;
  • Preventing normal access 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.

Worm:Win32/Scrolo.A

The most regular channels where Worm:Win32/Scrolo.A are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a source that organizes a destructive software program;

As soon as the Trojan is efficiently infused, it will either cipher the information on the sufferer’s PC or protect against the device from working in an appropriate manner – while likewise positioning a ransom money note that states the requirement for the sufferers to effect the payment for the purpose of decrypting the papers or bring back the documents system back to the initial problem. In most circumstances, the ransom money note will certainly show up when the client restarts the COMPUTER after the system has currently been harmed.

Worm:Win32/Scrolo.A circulation channels.

In different corners of the world, Worm:Win32/Scrolo.A grows by jumps and bounds. Nevertheless, the ransom money notes as well as methods of obtaining the ransom money quantity may vary depending upon particular neighborhood (local) settings. The ransom notes and also tricks of extorting the ransom money quantity might differ depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans frequently wrongfully report having found some unlicensed applications made it possible for on the victim’s tool. The alert then requires the user to pay the ransom.

    Faulty statements regarding unlawful material.

    In nations where software application piracy is less preferred, this method is not as efficient for the cyber frauds. Alternatively, the Worm:Win32/Scrolo.A popup alert might falsely claim to be stemming from a law enforcement establishment as well as will certainly report having located kid pornography or other unlawful data on the gadget.

    Worm:Win32/Scrolo.A popup alert might falsely claim to be deriving from a regulation enforcement institution and also will certainly report having located child pornography or other illegal data on the tool. The alert will in a similar way have a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: F2F83ACB
md5: 12150c33e91534a389fdd6958d3696f8
name: 12150C33E91534A389FDD6958D3696F8.mlw
sha1: 7ecf69e451ea53d61229e7d9c7e88219baa6c6a0
sha256: 953b9adfadf37d77989c641ebd4ef27738ae56106cecac003168538530eeecdf
sha512: f9533655b7c5d9f58a508431117203e5c38adbd00ba9d62079df5a5ae507b0876ee468e55d52dff44b730981426565ab110cb40199d9780a666177432cfd0173
ssdeep: 3072:qAzoG5LG8kk+MxB4c7Cje76y642DgSrojEtOZOcyv9IiwjC:qAzoUGTwxe3eC8QtqOaN
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright:
InternalName:
FileVersion: 1.0.0.8
CompanyName:
LegalTrademarks:
Comments:
ProductName:
ProductVersion: 1.0.0.0
FileDescription:
OriginalFilename:
Translation: 0x0419 0x04e3

Worm:Win32/Scrolo.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004bcce41 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen.2100
Cynet Malicious (score: 100)
ALYac Gen:Trojan.Keylogger.tq0@aeG4uCac
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.fccbc9fe
K7GW Trojan ( 004bcce41 )
Cybereason malicious.3e9153
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Delf.IIC
APEX Malicious
TotalDefense Win32/FakeFLDR_i
Avast Win32:Trojan-gen
ClamAV Win.Trojan.Delf-13081
Kaspersky Trojan-Ransom.Win32.Blocker.jbwm
BitDefender Gen:Trojan.Keylogger.tq0@aeG4uCac
NANO-Antivirus Trojan.Win32.Agent.cqyay
MicroWorld-eScan Gen:Trojan.Keylogger.tq0@aeG4uCac
Tencent Malware.Win32.Gencirc.114c3a6d
Ad-Aware Gen:Trojan.Keylogger.tq0@aeG4uCac
Sophos Mal/Generic-S
Comodo Packed.Win32.MUPX.Gen@24tbus
BitDefenderTheta AI:Packer.7EF414DB1D
VIPRE BehavesLike.Win32.Malware.ahc (mx-v)
TrendMicro Ransom_Blocker.R002C0CK120
McAfee-GW-Edition BehavesLike.Win32.Sytro.ft
FireEye Generic.mg.12150c33e91534a3
Emsisoft Gen:Trojan.Keylogger.tq0@aeG4uCac (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Delf.fsx
Webroot W32.Malware.Gen
Avira TR/Crypt.CFI.Gen
eGambit Unsafe.AI_Score_100%
Microsoft Worm:Win32/Scrolo.A
Arcabit Trojan.Keylogger.E51F42
AegisLab Trojan.Win32.Agent.m!c
GData Gen:Trojan.Keylogger.tq0@aeG4uCac
AhnLab-V3 Worm/Win32.AutoRun.R6780
Acronis suspicious
McAfee GenericRXFG-YT!12150C33E915
MAX malware (ai score=89)
VBA32 Backdoor.Agent
Malwarebytes Malware.Heuristic.1003
Panda Generic Malware
TrendMicro-HouseCall Ransom_Blocker.R002C0CK120
Rising Worm.VBInjectEx!1.99E6 (CLOUD)
Yandex Trojan.GenAsa!865aS5YctyU
Ikarus Trojan-Dropper.Delf
MaxSecure Trojan.Malware.1412240.susgen
Fortinet W32/Delf.IIC!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HwUBB48A

How to remove Worm:Win32/Scrolo.A ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run 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.

Run Setup.exe

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.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Worm:Win32/Scrolo.A 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.

GridinSoft Anti-Malware Scanning

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.

GridinSoft Anti-Malware Scan Result

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:

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If the guide doesn’t help you to remove Worm:Win32/Scrolo.A you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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