Trojan:Win32/Kilim.AC

Written by Robert Bailey

What is Trojan:Win32/Kilim.AC infection?

In this article you will locate concerning the definition of Trojan:Win32/Kilim.AC and also its adverse impact on your computer. Such ransomware are a type of malware that is elaborated by on-line frauds to require paying the ransom money by a sufferer.

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Most of the cases, Trojan:Win32/Kilim.AC infection will advise its sufferers to start funds move for the function of reducing the effects of the changes that the Trojan infection has actually presented to the victim’s gadget.

Trojan:Win32/Kilim.AC Summary

These modifications can be as adheres to:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • Installs an hook procedure to monitor for mouse events;
  • Network activity contains more than one unique useragent.;
  • 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 identify installed analysis tools by a known file location;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • The sample wrote data to the system hosts file.;
  • Ciphering the records found on the sufferer’s hard disk drive — so the victim can no more use the data;
  • Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
chromeuser.xyz Ransom.Win32.Blocker.8

Trojan:Win32/Kilim.AC

The most regular channels where Trojan:Win32/Kilim.AC Trojans are infused are:

  • By methods of phishing emails;
  • As an effect of user ending up on a resource that holds a malicious software;

As quickly as the Trojan is successfully infused, it will either cipher the information on the victim’s PC or prevent the gadget from working in a correct way – while likewise positioning a ransom note that states the requirement for the sufferers to impact the repayment for the function of decrypting the files or bring back the data system back to the preliminary problem. In the majority of instances, the ransom money note will certainly come up when the client reboots the PC after the system has actually currently been damaged.

Trojan:Win32/Kilim.AC circulation channels.

In various corners of the globe, Trojan:Win32/Kilim.AC expands by jumps and also bounds. Nevertheless, the ransom money notes and also tricks of extorting the ransom money quantity might vary relying on certain local (regional) setups. The ransom notes and also tricks of extorting the ransom money amount might differ depending on particular neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having detected some unlicensed applications enabled on the target’s gadget. The alert then requires the individual to pay the ransom money.

    Faulty declarations concerning prohibited content.

    In countries where software application piracy is less popular, this approach is not as effective for the cyber scams. Alternatively, the Trojan:Win32/Kilim.AC popup alert might incorrectly claim to be deriving from a police institution and will report having situated child porn or other prohibited data on the device.

    Trojan:Win32/Kilim.AC popup alert might wrongly declare to be acquiring from a law enforcement establishment and will report having located kid pornography or other illegal data on the gadget. The alert will likewise have a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 2459B925
md5: d85730af03e9c9943a72ecbd403d564b
name: D85730AF03E9C9943A72ECBD403D564B.mlw
sha1: 43366550777e6e0737e609db232d49ed0035b514
sha256: a2d73a5b0a8b15e8b1953688e5872ff5fa5695de83f47870821a1d4febca4ee2
sha512: 16b0ac4dddee38c94ebe252759dc4a2e9208fdddb8d2145ff503c719c37dcb19549717ee6e29f1bb3b4fad5182a80b18fad0223a05bdc3187b606974aeda3dc7
ssdeep: 24576:cQEDaAt7kVQr1uqMCh0cMRXrVJuP2R5RfNURLrwlOuXv:4a2jYQk6RQ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright:
InternalName:
FileVersion: 1.1.19.01
ProductName:
ProductVersion: 1.1.19.01
FileDescription:
OriginalFilename:
Translation: 0x0409 0x04b0

Trojan:Win32/Kilim.AC also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
DrWeb Trojan.DownLoader12.53410
Cynet Malicious (score: 99)
Cylance Unsafe
Zillya Trojan.VB.Win32.131330
Sangfor Ransom.Win32.Blocker.8
CrowdStrike win/malicious_confidence_60% (W)
Alibaba Ransom:Win32/Blocker.8402a6ef
K7GW Riskware ( 0040eff71 )
Cybereason malicious.f03e9c
Cyren W32/Backdoor.XYYW-3930
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/ExtenBro.AB
APEX Malicious
Avast Win32:Dropper-gen [Drp]
ClamAV Win.Trojan.Agent-1272171
Kaspersky Trojan-Ransom.Win32.Blocker.gqdm
NANO-Antivirus Trojan.Win32.Blocker.dtacsz
SUPERAntiSpyware Trojan.Agent/Gen-Ransom
Tencent Malware.Win32.Gencirc.10b1dc59
Sophos Mal/Generic-S
Comodo Malware@#3qwq5uk9uo5qh
F-Secure Heuristic.HEUR/AGEN.1106171
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.tc
FireEye Generic.mg.d85730af03e9c994
Jiangmin Trojan/Blocker.lrv
Webroot W32.Malware.Gen
Avira HEUR/AGEN.1106171
eGambit Unsafe.AI_Score_79%
Antiy-AVL Trojan/Generic.ASMalwS.E66048
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Kilim.AC
AegisLab Trojan.Win32.Blocker.j!c
ZoneAlarm Trojan-Ransom.Win32.Blocker.gqdm
AhnLab-V3 Trojan/Win32.Gen
McAfee GenericRXAA-AA!D85730AF03E9
MAX malware (ai score=100)
VBA32 Hoax.Blocker
Malwarebytes Ransom.Agent.AHK
Panda Trj/CI.A
Rising Malware.Undefined!8.C (CLOUD)
Yandex Trojan.Blocker!Wqjyl969XYo
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Blocker.GQDM!tr
AVG Win32:Dropper-gen [Drp]
Paloalto generic.ml

How to remove Trojan:Win32/Kilim.AC virus?

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 GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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 Trojan:Win32/Kilim.AC 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 Trojan:Win32/Kilim.AC you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: http://gridinsoft.com/products/

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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