Win32/PSW.Delf.OIF

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

What is Win32/PSW.Delf.OIF infection?

In this post you will certainly discover about the meaning of Win32/PSW.Delf.OIF and also its adverse effect on your computer. Such ransomware are a kind of malware that is clarified by on-line fraudulences to demand paying the ransom by a victim.

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In the majority of the cases, Win32/PSW.Delf.OIF infection will certainly advise its victims to launch funds transfer for the function of counteracting the amendments that the Trojan infection has actually presented to the sufferer’s tool.

Win32/PSW.Delf.OIF Summary

These adjustments can be as complies with:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Polish;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Steals private information from local Internet browsers;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the victim’s hard disk — so the sufferer can no longer make use of 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.
Similar behavior
Related domains
appmsg.gadu-gadu.pl Trojan-Ransom.Win32.Blocker.ikhu
www.photofacebook.cba.pl Trojan-Ransom.Win32.Blocker.ikhu

Win32/PSW.Delf.OIF

The most normal channels where Win32/PSW.Delf.OIF Trojans are injected 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 a consequence of individual ending up on a resource that holds a malicious software program;

As soon as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or protect against the device from operating in a correct manner – while additionally placing a ransom money note that discusses the requirement for the targets to impact the payment for the function of decrypting the files or recovering the documents system back to the initial condition. In many instances, the ransom note will show up when the customer reboots the PC after the system has already been harmed.

Win32/PSW.Delf.OIF circulation networks.

In numerous corners of the globe, Win32/PSW.Delf.OIF grows by jumps and bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom quantity might differ relying on particular local (regional) setups. The ransom notes as well as tricks of extorting the ransom money amount might differ depending on particular neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software.

    In specific areas, the Trojans commonly wrongfully report having identified some unlicensed applications enabled on the sufferer’s tool. The sharp then demands the individual to pay the ransom money.

    Faulty statements concerning unlawful web content.

    In countries where software piracy is less preferred, this technique is not as efficient for the cyber scams. Alternatively, the Win32/PSW.Delf.OIF popup alert might falsely claim to be stemming from a police institution and will report having located youngster pornography or other unlawful data on the gadget.

    Win32/PSW.Delf.OIF popup alert might incorrectly declare to be acquiring from a regulation enforcement organization as well as will certainly report having located youngster porn or various other illegal information on the device. The alert will likewise consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 386A8B61
md5: 91dcce1a4dbe063d6ddb04baea98ca7a
name: 91DCCE1A4DBE063D6DDB04BAEA98CA7A.mlw
sha1: c2d0eb92d8bdad547f65dd8ef055a26301166100
sha256: 503444767c26461f396d59e8e12eb42179c622d612e4068b47a0ba9d8f6b6b09
sha512: 9e3622c5cfe9450650b9461578a7aed6c943f5239376147a52b30a3d7c28c7063f38b54d4a7fad3ad493cde510434e8a1aeb8282c1d2a62a92e1b08ae7df75c4
ssdeep: 24576:oRk/hIXptr9d6U46v4NjYiEEPT9msvpKSm89VqVHsznO:mk/hIXpPUUf4NsEPT9PASvsszO
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Win32/PSW.Delf.OIF also known as:

GridinSoft Trojan.Ransom.Gen
DrWeb DLOADER.Trojan
McAfee Artemis!91DCCE1A4DBE
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
K7AntiVirus Trojan ( 7000000f1 )
K7GW Trojan ( 7000000f1 )
Cybereason malicious.2d8bda
BitDefenderTheta Gen:NN.ZelphiF.34590.xnGfaOMxB8kG
Avast FileRepMalware
NANO-Antivirus Trojan.Win32.Delf.czkalo
Sophos Mal/Generic-S (PUA)
Comodo Malware@#2i9lussip2oj0
F-Secure Trojan.TR/Agent.1439744.8
Zillya Trojan.Blocker.Win32.38165
McAfee-GW-Edition BehavesLike.Win32.Dropper.tc
SentinelOne Static AI – Suspicious PE
Avira TR/Agent.1439744.8
Antiy-AVL Trojan/Win32.Tgenic
Microsoft Program:Win32/Wacapew.C!ml
ZoneAlarm Trojan-Ransom.Win32.Blocker.ikhu
Cynet Malicious (score: 100)
Malwarebytes Malware.Heuristic.1003
APEX Malicious
ESET-NOD32 Win32/PSW.Delf.OIF
Tencent Win32.Trojan.Agent.Htvw
Yandex Trojan.PWS.Delf!ipesvuGGjUA
Ikarus Trojan.Win32.PSW
eGambit Unsafe.AI_Score_100%
Fortinet W32/Delf.OIF!tr
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_60% (D)
Qihoo-360 Win32/Ransom.Blocker.HwsBy6cA

How to remove Win32/PSW.Delf.OIF ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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/PSW.Delf.OIF 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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If the guide doesn’t help you to remove Win32/PSW.Delf.OIF 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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