What is TrojanSpy:MSIL/Keylog.A infection?

In this short article you will find concerning the meaning of TrojanSpy:MSIL/Keylog.A and its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by on-line frauds to demand paying the ransom money by a victim.

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Most of the instances, TrojanSpy:MSIL/Keylog.A infection will certainly advise its victims to start funds transfer for the purpose of counteracting the changes that the Trojan infection has actually introduced to the victim’s device.

TrojanSpy:MSIL/Keylog.A Summary

These modifications 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.
  • 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.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Starts servers listening on;
  • 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.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • 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
  • Attempts to disable System Restore. System Restore function – allows you to revert the computer’s state (system files, applications, and system settings) to that of a previous point in time, which can be used to recover after a virus attack.
  • Harvests information related to installed instant messenger clients;
  • Attempts to create or modify system certificates;
  • The sample wrote data to the system hosts file.;
  • Clears web history;
  • Ciphering the records found on the victim’s hard disk drive — so the target can no longer use the information;
  • Preventing normal 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.


One of the most typical channels whereby TrojanSpy:MSIL/Keylog.A are infused are:

  • By ways of phishing e-mails;
  • As a consequence of individual ending up on a source that holds a malicious software program;

As quickly as the Trojan is successfully infused, it will either cipher the information on the sufferer’s computer or prevent the device from functioning in a correct fashion – while also putting a ransom money note that states the need for the targets to impact the settlement for the function of decrypting the documents or restoring the data system back to the preliminary condition. In many circumstances, the ransom money note will turn up when the customer restarts the PC after the system has actually already been damaged.

TrojanSpy:MSIL/Keylog.A distribution channels.

In different edges of the globe, TrojanSpy:MSIL/Keylog.A grows by leaps and bounds. Nevertheless, the ransom money notes and methods of extorting the ransom amount may differ depending upon particular neighborhood (local) settings. The ransom notes and methods of extorting the ransom money quantity may vary depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software.

    In certain locations, the Trojans typically wrongfully report having actually discovered some unlicensed applications made it possible for on the target’s gadget. The sharp after that requires the customer to pay the ransom money.

    Faulty statements regarding unlawful web content.

    In nations where software application piracy is much less popular, this approach is not as efficient for the cyber frauds. Conversely, the TrojanSpy:MSIL/Keylog.A popup alert may incorrectly claim to be stemming from a police organization as well as will certainly report having situated kid porn or various other unlawful data on the tool.

    TrojanSpy:MSIL/Keylog.A popup alert might wrongly declare to be acquiring from a legislation enforcement establishment and will certainly report having situated kid porn or various other unlawful information on the gadget. The alert will likewise contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 8CEB1754
md5: b9ceb23b99ca533d3ca9bd8ca3844402
name: B9CEB23B99CA533D3CA9BD8CA3844402.mlw
sha1: ed2fcd07be49b2e56ede9774b387f5583e5e722b
sha256: 95126b6eb16e95e7acb6d5750933654e55d9740d03b97370cf62db250b95e0df
sha512: f2bfca704305431a95736088d8b9656e9e00f85f0ecb686f86bf55fc778c2ec05ec7654222d8b6693f7026af0b166544f14d5fcfeda0fdfc5f8d8c09b315597d
ssdeep: 6144:fc0h522p3l04ZMSmIp3Uy28uhyqe/I38HeC9acLMDGr9v/lqrQxJJG:nhxp3lZnT9bDuaI39cL/9v8Q1G
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

TrojanSpy:MSIL/Keylog.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 004aee531 )
DrWeb Trojan.PWS.Siggen1.61011
Cynet Malicious (score: 90)
ALYac Trojan.Rasftuby.Gen.11
Cylance Unsafe
Sangfor Trojan.Win32.Generic.8
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Ransom:Win32/Blocker.c1611f07
K7GW Trojan ( 004aee531 )
Cybereason malicious.b99ca5
Symantec Trojan.Gen.MBT
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Blocker.jwjx
BitDefender Trojan.Rasftuby.Gen.11
NANO-Antivirus Trojan.Win32.Blocker.ekqdkk
MicroWorld-eScan Trojan.Rasftuby.Gen.11
Tencent Win32.Trojan.Blocker.Pikc
Ad-Aware Trojan.Rasftuby.Gen.11
Sophos Mal/Generic-R + Mal/RarMal-E
Comodo Malware@#2n2wz02d95chw
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Blocker.R002C0RK120
McAfee-GW-Edition BehavesLike.Win32.AdwareLinkury.gc
Emsisoft Trojan.Rasftuby.Gen.11 (B)
Avira TR/Patched.Gen
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft TrojanSpy:MSIL/Keylog.A
Arcabit Trojan.Rasftuby.Gen.11
ZoneAlarm Trojan-Ransom.Win32.Blocker.jwjx
GData Trojan.Rasftuby.Gen.11
TACHYON Trojan/W32.Agent.446008
McAfee Artemis!B9CEB23B99CA
MAX malware (ai score=85)
VBA32 TrojanRansom.Blocker
Malwarebytes Malware.AI.1235190845
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_Blocker.R002C0RK120
MaxSecure Trojan.Malware.300983.susgen
Fortinet Dropper.SFX!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/Trojan.599

How to remove TrojanSpy:MSIL/Keylog.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 TrojanSpy:MSIL/Keylog.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 TrojanSpy:MSIL/Keylog.A you can always ask me in the comments for getting help.

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About the author

Robert Bailey

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

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