Trojan.Win32.Zenpak.ahnb

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

What is Trojan.Win32.Zenpak.ahnb infection?

In this post you will certainly discover regarding the meaning of Trojan.Win32.Zenpak.ahnb and also its adverse impact on your computer. Such ransomware are a type of malware that is clarified by online frauds to demand paying the ransom by a victim.

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In the majority of the cases, Trojan.Win32.Zenpak.ahnb infection will certainly instruct its targets to start funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually presented to the target’s tool.

Trojan.Win32.Zenpak.ahnb Summary

These adjustments can be as adheres to:

  • 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);
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Presents an Authenticode digital signature;
  • 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.
  • Mimics the system’s user agent string for its own requests;
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Performs some HTTP requests;
  • Unconventionial binary language: Chinese (Simplified);
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • A system process is generating network traffic likely as a result of process injection;
  • 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 version of Bios, possibly for anti-virtualization;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • 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 papers situated on the victim’s disk drive — so the sufferer can no more use the data;
  • Preventing routine accessibility 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.
Similar behavior
Related domains
www.ip-adress.comBScope.TrojanRansom.Shade

Trojan.Win32.Zenpak.ahnb

The most typical networks whereby Trojan.Win32.Zenpak.ahnb Ransomware are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of user ending up on a source that organizes a harmful software application;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the sufferer’s PC or prevent the device from functioning in a proper fashion – while likewise putting a ransom note that mentions the demand for the targets to impact the settlement for the function of decrypting the documents or bring back the data system back to the preliminary condition. In the majority of instances, the ransom money note will certainly come up when the customer restarts the COMPUTER after the system has actually currently been damaged.

Trojan.Win32.Zenpak.ahnb distribution channels.

In numerous edges of the world, Trojan.Win32.Zenpak.ahnb grows by leaps and also bounds. Nonetheless, the ransom notes and tricks of extorting the ransom money amount might differ depending on certain local (regional) settings. The ransom notes as well as methods of extorting the ransom amount may vary depending on specific neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software application.

    In particular locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications allowed on the target’s device. The alert then demands the customer to pay the ransom money.

    Faulty declarations regarding unlawful web content.

    In nations where software piracy is much less preferred, this method is not as effective for the cyber frauds. Alternatively, the Trojan.Win32.Zenpak.ahnb popup alert may incorrectly assert to be originating from a police institution and will report having situated child porn or various other unlawful information on the gadget.

    Trojan.Win32.Zenpak.ahnb popup alert might incorrectly declare to be deriving from a regulation enforcement institution and will certainly report having located child pornography or various other illegal data on the tool. The alert will similarly contain a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 13E72AAF
md5: 0648d3e145c758bfe88f1b05681c67c3
name: tmpzqw10433
sha1: df325816d7aede3820944c05738b38453dc174ce
sha256: 1aac5400db199e5291a5fc8d1d899758119aabd7ff8a3d7575989e0de5e8604d
sha512: 3524316281a20f85a1895155fbdd450ef0657e0bb3363bca95c201273f8f2fdeced3897525e0a0ba50813b98354f2695a8d647d25e110286627981dfcc4dcd5f
ssdeep: 12288:itlQY2wwLHqpVxT85LfHbRhco5QFuo+NJYkfgn6ggKm/cmz:iv2wwTX5Ldhf5QUo+NSkfg93yl
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (c) 2003-2016 Glarysoft Ltd
InternalName: Report.exe
FileVersion: 5, 0, 0, 6
CompanyName: Glarysoft Ltd
ProductName: Glary Utilities
ProductVersion: 5, 0, 0, 1
FileDescription: Glarysoft Crash Report
OriginalFilename: CrashReport.exe
Translation: 0x0804 0x03a8

Trojan.Win32.Zenpak.ahnb also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetectVM.malwareB
MicroWorld-eScanTrojan.GenericKDZ.67972
FireEyeGeneric.mg.0648d3e145c758bf
McAfeeW32/PinkSbot-GW!0648D3E145C7
CylanceUnsafe
VIPRETrojan.Win32.Generic.pak!cobra
CrowdStrikewin/malicious_confidence_80% (D)
BitDefenderTrojan.GenericKDZ.67972
K7GWRiskware ( 0040eff71 )
K7AntiVirusRiskware ( 0040eff71 )
TrendMicroBackdoor.Win32.QAKBOT.SME
BitDefenderThetaGen:NN.ZexaF.34128.OI1@aiN5Wjij
SymantecML.Attribute.HighConfidence
AvastWin32:DangerousSig [Trj]
GDataTrojan.GenericKDZ.67972
KasperskyTrojan.Win32.Zenpak.ahnb
RisingTrojan.Kryptik!1.C745 (RDMK:cmRtazoHGS1FklqEWOjyrfG4XCjI)
Endgamemalicious (high confidence)
SophosTroj/Qbot-FS
F-SecureHeuristic.HEUR/AGEN.1118848
Invinceaheuristic
Trapminemalicious.high.ml.score
EmsisoftTrojan.GenericKDZ.67972 (B)
AviraHEUR/AGEN.1118848
Antiy-AVLGrayWare/Win32.Kryptik.ehls
MicrosoftTrojan:Win32/Qakbot.SD!MTB
ArcabitTrojan.Generic.D10984
ZoneAlarmTrojan.Win32.Zenpak.ahnb
CynetMalicious (score: 85)
AhnLab-V3Trojan/Win32.Kryptik.R340774
Acronissuspicious
VBA32BScope.TrojanRansom.Shade
ALYacTrojan.GenericKDZ.67972
MAXmalware (ai score=81)
Ad-AwareTrojan.GenericKDZ.67972
MalwarebytesBackdoor.Qbot
PandaTrj/GdSda.A
APEXMalicious
ESET-NOD32a variant of Win32/GenKryptik.EMPU
SentinelOneDFI – Malicious PE
eGambitPE.Heur.InvalidSig
FortinetW32/Cridex.VHO!tr
AVGWin32:DangerousSig [Trj]
Paloaltogeneric.ml

How to remove Trojan.Win32.Zenpak.ahnb 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

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.ahnb 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.Zenpak.ahnb 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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