Trojan.Win32.Zenpak.aaka

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

What is Trojan.Win32.Zenpak.aaka infection?

In this post you will certainly find regarding the meaning of Trojan.Win32.Zenpak.aaka as well as its negative influence on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet scams to require paying the ransom by a victim.

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Most of the situations, Trojan.Win32.Zenpak.aaka virus will certainly advise its targets to start funds transfer for the purpose of counteracting the amendments that the Trojan infection has actually introduced to the victim’s device.

Trojan.Win32.Zenpak.aaka 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);
  • Injection with CreateRemoteThread in a remote process;
  • 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;
  • Mimics the system’s user agent string for its own requests;
  • A process attempted to delay the analysis task.;
  • Attempts to connect to a dead IP:Port (7 unique times);
  • A named pipe was used for inter-process communication;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • 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.
  • Performs some HTTP requests;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • 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!
  • A system process is generating network traffic likely as a result of process injection;
  • Behavior consistent with a dropper attempting to download the next stage.;
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • 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.
  • Ciphering the papers located on the target’s hard disk — so the victim can no more use the data;
  • Preventing regular accessibility to the victim’s workstation;
Similar behavior
Related domains
www.ip-adress.com BScope.TrojanRansom.Shade
ocsp.usertrust.com BScope.TrojanRansom.Shade
crl.comodoca.com BScope.TrojanRansom.Shade
ocsp.comodoca.com BScope.TrojanRansom.Shade

Trojan.Win32.Zenpak.aaka

The most regular channels where Trojan.Win32.Zenpak.aaka Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of customer ending up on a resource that hosts a malicious software program;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s computer or avoid the device from operating in a proper fashion – while likewise putting a ransom money note that states the need for the sufferers to effect the settlement for the function of decrypting the files or recovering the file system back to the initial problem. In most instances, the ransom note will show up when the customer reboots the COMPUTER after the system has currently been harmed.

Trojan.Win32.Zenpak.aaka circulation networks.

In various edges of the world, Trojan.Win32.Zenpak.aaka expands by leaps as well as bounds. However, the ransom notes and techniques of extorting the ransom quantity might differ depending upon certain regional (regional) settings. The ransom notes and also tricks of extorting the ransom quantity might differ depending on particular neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software program.

    In particular locations, the Trojans often wrongfully report having actually detected some unlicensed applications allowed on the target’s tool. The alert then requires the user to pay the ransom money.

    Faulty statements concerning unlawful content.

    In nations where software application piracy is much less popular, this technique is not as effective for the cyber fraudulences. Conversely, the Trojan.Win32.Zenpak.aaka popup alert may falsely assert to be deriving from a police organization and will report having situated child porn or various other illegal information on the gadget.

    Trojan.Win32.Zenpak.aaka popup alert may wrongly assert to be acquiring from a legislation enforcement institution and will certainly report having situated child porn or various other prohibited information on the tool. The alert will similarly contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 209F8D54
md5: 5945e8bc2fb7a54ddf305ce71babc175
name: 8888.png
sha1: f0dc78bc0ed806e859c3b114c0fb7d784ff61fd9
sha256: 56935d5f4d0bd2e1558a357f25cac81d5656bb35efcd0880e758b7af59d381b4
sha512: 4bdea86e80f67a5c53ee7bbc6cf1fd7a11e7d84014b4340513f2baf91b44adf8c7bacaa11b80a33d44253d9c366da7923bbb1d38e60b3dc36b59f575848452c8
ssdeep: 6144:xUEO5Cs4zH8Qe3xpq2SGtXvemX3wvm+s:xUE8CsB3WGtXvTg+
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 2007, 2013 Oracle and/or its affiliates. All rights reserved.
InternalName: nbexec
FileVersion: 8.0.0.0
Full Version: 09062013
CompanyName: Oracle Corporation
ProductName: NetBeans Platform Launcher 8.0
ProductVersion: 8.0.0.0
FileDescription: NetBeans Platform Launcher
OriginalFilename: nbexec.exe
Translation: 0x0000 0x04b0

Trojan.Win32.Zenpak.aaka also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware2
MicroWorld-eScan Trojan.GenericKDZ.66875
FireEye Generic.mg.5945e8bc2fb7a54d
McAfee Trojan-FSGA!5945E8BC2FB7
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
CrowdStrike win/malicious_confidence_70% (D)
BitDefender Trojan.GenericKDZ.66875
K7GW Trojan ( 00565d631 )
K7AntiVirus Trojan ( 00565d631 )
APEX Malicious
Avast Win32:BankerX-gen [Trj]
ClamAV Win.Dropper.Qakbot-7727897-0
GData Trojan.GenericKDZ.66875
Kaspersky Trojan.Win32.Zenpak.aaka
Rising Backdoor.Qakbot!8.C7B (TFE:dGZlOgLn4a1PkkDgNA)
Ad-Aware Trojan.GenericKDZ.66875
Sophos Troj/Qbot-FS
F-Secure Trojan.TR/AD.Qbot.kpgxk
DrWeb Trojan.Inject3.39416
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Dropper.tz
Emsisoft Trojan.GenericKDZ.66875 (B)
Jiangmin Trojan.Zenpak.bpc
Avira TR/AD.Qbot.kpgxk
MAX malware (ai score=83)
Antiy-AVL Trojan/Win32.Zenpak
Endgame malicious (high confidence)
Arcabit Trojan.Generic.D1053B
ZoneAlarm Trojan.Win32.Zenpak.aaka
Microsoft Trojan:Win32/Qbot.MXI!MTB
AhnLab-V3 Malware/Win32.RL_Generic.R335066
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34108.5r0@aK2W50pi
ALYac Trojan.GenericKDZ.66875
VBA32 BScope.TrojanRansom.Shade
Malwarebytes Backdoor.Qbot
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Kryptik.HDBX
Tencent Malware.Win32.Gencirc.10b9ebcd
Yandex Trojan.GenKryptik!
SentinelOne DFI – Malicious PE
eGambit Unsafe.AI_Score_61%
Fortinet W32/Ursnif.CZ!tr
AVG Win32:BankerX-gen [Trj]
Cybereason malicious.c2fb7a
Qihoo-360 HEUR/QVM20.1.05DE.Malware.Gen

How to remove Trojan.Win32.Zenpak.aaka 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.Zenpak.aaka 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.Win32.Zenpak.aaka 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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