What is TrojanDropper:Win32/Surldoe!A infection?

In this article you will certainly discover regarding the definition of TrojanDropper:Win32/Surldoe!A as well as its negative effect on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to require paying the ransom by a sufferer.

GridinSoft Anti-Malware Review

GridinSoft Anti-Malware

Removing computer viruses manually may take hours and may damage your PC in the process. I recommend you to download GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
6-day trial available for threats removal.
EULA | Privacy Policy | GridinSoft

Most of the situations, TrojanDropper:Win32/Surldoe!A ransomware will certainly advise its targets to initiate funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually presented to the victim’s device.

TrojanDropper:Win32/Surldoe!A Summary

These alterations can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the sufferer’s hard disk — so the target can no more use the information;
  • Preventing normal access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most regular networks where TrojanDropper:Win32/Surldoe!A Ransomware are infused are:

  • By means of phishing e-mails;
  • As a repercussion of customer ending up on a source that organizes a destructive software application;

As soon as the Trojan is successfully injected, it will either cipher the information on the target’s computer or avoid the gadget from working in a proper way – while likewise positioning a ransom money note that discusses the need for the victims to impact the repayment for the purpose of decrypting the papers or bring back the documents system back to the initial problem. In most instances, the ransom money note will show up when the client reboots the PC after the system has currently been harmed.

TrojanDropper:Win32/Surldoe!A distribution networks.

In different edges of the globe, TrojanDropper:Win32/Surldoe!A expands by jumps as well as bounds. However, the ransom money notes as well as tricks of extorting the ransom quantity might vary depending upon particular neighborhood (local) setups. The ransom money notes and methods of extorting the ransom amount may differ depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty informs about unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having actually identified some unlicensed applications made it possible for on the sufferer’s tool. The alert after that requires the individual to pay the ransom.

    Faulty declarations about unlawful web content.

    In countries where software piracy is less popular, this approach is not as reliable for the cyber scams. Additionally, the TrojanDropper:Win32/Surldoe!A popup alert might wrongly assert to be originating from a police institution and will certainly report having located kid porn or other illegal information on the device.

    TrojanDropper:Win32/Surldoe!A popup alert might wrongly claim to be acquiring from a legislation enforcement organization and will report having situated youngster pornography or various other unlawful information on the tool. The alert will similarly have a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 8FC477C7
md5: 89c7c47ca2901bcbf4f0aaeb685bc05e
name: 89C7C47CA2901BCBF4F0AAEB685BC05E.mlw
sha1: 685b13caf6fb2a5f06df7082220884a4008d61f3
sha256: 7e00615681d539db63f3f579d9403b958deb449e85a74d58f340e029eeb4a83d
sha512: 8a5db76f712520f422fe353a5d99c8818ae598cd548891870378e0b1691dcea0274f899bd76579f29c9d826f694f283530a2505deba1a19fcfa217d5d3086d29
ssdeep: 12288:HiV+mzy7aI76/7rKQdkCXchHPksE2Xg4fYJZGLmO4F1lX0Pm6:Hi81fadkjcsEU0JZEmO4/ej
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

TrojanDropper:Win32/Surldoe!A also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus P2PWorm ( 0008f4951 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.LDPinch.11622
Cynet Malicious (score: 100)
ALYac Gen:Variant.Midie.9511
Cylance Unsafe
Zillya Trojan.Surldoe.Win32.90
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba TrojanDropper:Win32/Surldoe.4ab9baa9
K7GW P2PWorm ( 0008f4951 )
Cybereason malicious.ca2901
Cyren W32/Risk.CHMM-1560
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanDropper.Surldoe.B
APEX Malicious
Avast Win32:Malware-gen
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Variant.Midie.9511
NANO-Antivirus Trojan.Win32.LDPinch.edhing
MicroWorld-eScan Gen:Variant.Midie.9511
Tencent Backdoor.Win32.Sdbot.pyv
Ad-Aware Gen:Variant.Midie.9511
Sophos Mal/Generic-S
Comodo NetWorm.Win32.Kolab.~F@f80py
F-Secure Dropper.DR/Delphi.Gen
BitDefenderTheta AI:Packer.B659DEC31F
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.VirRansom.bc
Emsisoft Gen:Variant.Midie.9511 (B)
SentinelOne Static AI – Malicious PE
Avira DR/Delphi.Gen
Microsoft TrojanDropper:Win32/Surldoe.gen!A
Arcabit Trojan.Midie.D2527
ZoneAlarm UDS:DangerousObject.Multi.Generic
GData Gen:Variant.Midie.9511
AhnLab-V3 Trojan/Win32.OnlineGameHack.C807
Acronis suspicious
McAfee GenericRXJH-AX!89C7C47CA290
MAX malware (ai score=99)
VBA32 TrojanPSW.LDPinch
Malwarebytes Malware.AI.721116010
Panda Trj/CI.A
Rising Dropper.Surldoe!8.A42 (CLOUD)
Yandex Trojan.GenAsa!gs4h0fYpeDA
Ikarus Backdoor.Win32.PcClient
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Generic.AC.1F068E!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/TrojanDropper.Generic.HgIASOkA

How to remove TrojanDropper:Win32/Surldoe!A ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 TrojanDropper:Win32/Surldoe!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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

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

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)


  1. GridinSoft Anti-Malware Review from HowToFix site:
  2. More information about GridinSoft products:

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

Leave a Reply


This site uses Akismet to reduce spam. Learn how your comment data is processed.