Win32/Injector.DCTJ

Written by Robert Bailey

What is Win32/Injector.DCTJ infection?

In this post you will discover about the definition of Win32/Injector.DCTJ as well as its unfavorable impact on your computer system. Such ransomware are a form of malware that is specified by online frauds to require paying the ransom by a sufferer.

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In the majority of the situations, Win32/Injector.DCTJ ransomware will advise its victims to launch funds transfer for the purpose of counteracting the changes that the Trojan infection has actually presented to the sufferer’s tool.

Win32/Injector.DCTJ Summary

These adjustments 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.

  • Unconventionial language used in binary resources: Norwegian (Nynorsk);
  • Executed a process and injected code into it, probably while unpacking;
  • Exhibits behavior characteristic of Kovter malware;
  • Detects VirtualBox through the presence of a library;
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • Deletes its original binary from disk;
  • A process attempted to delay the analysis task by a long amount of time.;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Creates a registry key or value with NUL characters to avoid detection with regedit;
  • 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
  • Stores JavaScript or a script command in the registry, likely for persistence or configuration;
  • Attempts to identify installed analysis tools by registry key;
  • Attempts to identify installed AV products by installation directory;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a file;
  • Detects VirtualBox through the presence of a registry key;
  • Detects VMware through the presence of a file;
  • Detects VMware through the presence of a registry key;
  • Detects Virtual PC through the presence of a file;
  • Attempts to modify browser security settings;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records located on the sufferer’s hard disk — so the target can no more 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.

Win32/Injector.DCTJ

One of the most regular channels through which Win32/Injector.DCTJ Trojans are injected are:

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

As soon as the Trojan is efficiently injected, it will either cipher the data on the victim’s PC or prevent the gadget from operating in a correct fashion – while likewise positioning a ransom note that mentions the demand for the targets to effect the settlement for the purpose of decrypting the files or recovering the documents system back to the first condition. In the majority of instances, the ransom note will certainly turn up when the client restarts the PC after the system has already been damaged.

Win32/Injector.DCTJ distribution networks.

In various corners of the world, Win32/Injector.DCTJ expands by leaps and bounds. Nevertheless, the ransom notes and tricks of extorting the ransom quantity may differ depending on particular regional (regional) setups. The ransom money notes and also techniques of obtaining the ransom money amount might vary depending on certain neighborhood (local) setups.

Ransomware injection

For example:

    Faulty signals concerning unlicensed software application.

    In specific locations, the Trojans often wrongfully report having found some unlicensed applications allowed on the target’s gadget. The alert then demands the individual to pay the ransom.

    Faulty statements about unlawful content.

    In nations where software application piracy is much less preferred, this technique is not as effective for the cyber scams. Additionally, the Win32/Injector.DCTJ popup alert might falsely claim to be stemming from a law enforcement organization as well as will certainly report having situated kid pornography or other prohibited information on the device.

    Win32/Injector.DCTJ popup alert might incorrectly assert to be deriving from a law enforcement institution and also will certainly report having situated child pornography or other unlawful information on the gadget. The alert will similarly consist of a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 093240A3
md5: f2e245dc55cd05c86cbe7e7859b40152
name: F2E245DC55CD05C86CBE7E7859B40152.mlw
sha1: 62eba767ed654b0ebe4ffc540728a4fed870539c
sha256: 8c7d95c42df8b41e05fc651ff1781c81b961af637960a2c7be8bd2f9fa336adb
sha512: 895fe10f19979569eeefe4edc5d971078142cc06ed36d962c8c19f0a3c5cbf96e22b35da4759590dfe80a05b95c1192c2bc5f533942270891365bc349023ffe3
ssdeep: 6144:MwbbbKbbb3J4/67R3Q1D6GHiImpp82ZTpnQIc:fbbbKbbbZ4/6NAZ5Hi7Q+tE
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0
LegalCopyright: xabPetrotall Groupxbb
InternalName: VBPing
FileVersion: 1.00.0129
CompanyName: Eng. Usama El-Mokadem
ProductName: VBPing
ProductVersion: 1.00.0129
FileDescription: Sorry no defination found but here are some following intersting information is available for bftmhg. No direct (one word) anagrams for bftmhg found in this word
OriginalFilename: VBPing.exe

Win32/Injector.DCTJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004f4dec1 )
Elastic malicious (high confidence)
DrWeb Trojan.VbCrypt.250
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ransom.Cryak.48
Cylance Unsafe
Zillya Trojan.Kovter.Win32.5848
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Kovter.cba04a1f
K7GW Trojan ( 004f4dec1 )
Cybereason malicious.c55cd0
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Injector.DCTJ
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Kovter-7602520-0
Kaspersky Trojan.Win32.Kovter.aama
BitDefender Gen:Variant.Ransom.Cryak.48
NANO-Antivirus Trojan.Win32.Kovter.ffpaww
MicroWorld-eScan Gen:Variant.Ransom.Cryak.48
Tencent Win32.Trojan.Kovter.Eegw
Ad-Aware Gen:Variant.Ransom.Cryak.48
Sophos Mal/Generic-S
Comodo Malware@#252hdpeju6i0m
BitDefenderTheta Gen:NN.ZevbaF.34670.qm3@aOwd3ncO
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.f2e245dc55cd05c8
Emsisoft Gen:Variant.Ransom.Cryak.48 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Kovter.byg
Avira HEUR/AGEN.1113142
Microsoft Trojan:Win32/Kovter
Arcabit Trojan.Ransom.Cryak.48
AegisLab Trojan.Win32.Kovter.4!c
ZoneAlarm Trojan.Win32.Kovter.aama
GData Gen:Variant.Ransom.Cryak.48
McAfee Trojan-FJDM!F2E245DC55CD
MAX malware (ai score=99)
VBA32 Trojan.Kovter
Panda Trj/Genetic.gen
Rising Trojan.Kovter!8.152 (CLOUD)
Ikarus Trojan.Win32.Injector
Fortinet W32/Injector.DCRG!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Adware.Kovter.HwMAEpsA

How to remove Win32/Injector.DCTJ 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 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 Win32/Injector.DCTJ 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 Win32/Injector.DCTJ 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/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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