PWS:MSIL/Stimilini.T

Written by Robert Bailey

What is PWS:MSIL/Stimilini.T infection?

In this post you will find about the definition of PWS:MSIL/Stimilini.T and its negative influence on your computer system. Such ransomware are a kind of malware that is specified by online fraudulences to require paying the ransom by a victim.

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In the majority of the situations, PWS:MSIL/Stimilini.T infection will certainly instruct its sufferers to initiate funds transfer for the objective of neutralizing the amendments that the Trojan infection has presented to the sufferer’s tool.

PWS:MSIL/Stimilini.T Summary

These alterations 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);
  • 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.
  • A process attempted to delay the analysis task.;
  • 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.

  • Detects Sandboxie through the presence of a library;
  • Detects Avast Antivirus through the presence of a library;
  • Detects the presence of Wine emulator via function name;
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • 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;
  • Creates a copy of itself;
  • The sample wrote data to the system hosts file.;
  • Ciphering the documents situated on the victim’s hard drive — so the target can no longer use the information;
  • Preventing routine accessibility 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.

PWS:MSIL/Stimilini.T

One of the most regular channels where PWS:MSIL/Stimilini.T are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a source that organizes a harmful software;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or stop the gadget from working in an appropriate manner – while additionally placing a ransom note that states the demand for the victims to effect the repayment for the objective of decrypting the files or restoring the file system back to the initial problem. In the majority of instances, the ransom money note will certainly come up when the customer reboots the PC after the system has already been damaged.

PWS:MSIL/Stimilini.T distribution channels.

In various edges of the globe, PWS:MSIL/Stimilini.T grows by jumps and also bounds. However, the ransom money notes and also tricks of obtaining the ransom money amount might differ depending upon certain regional (local) setups. The ransom notes as well as techniques of obtaining the ransom money amount may differ depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software application.

    In particular locations, the Trojans usually wrongfully report having actually spotted some unlicensed applications enabled on the sufferer’s gadget. The alert after that requires the customer to pay the ransom.

    Faulty declarations concerning illegal content.

    In countries where software piracy is much less popular, this approach is not as reliable for the cyber frauds. Additionally, the PWS:MSIL/Stimilini.T popup alert may incorrectly declare to be deriving from a law enforcement institution and also will report having situated youngster porn or various other prohibited information on the device.

    PWS:MSIL/Stimilini.T popup alert may falsely claim to be deriving from a law enforcement organization as well as will certainly report having located child porn or other prohibited data on the device. The alert will likewise consist of a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 35EB0ED7
md5: 9a12816427d932237ad3bd526fecda0c
name: 9A12816427D932237AD3BD526FECDA0C.mlw
sha1: 7140ffd4f2828244d9c67418349df395cad2963e
sha256: a1af9b9697738649ad9e903f26a69002905a7aced357875adb979671ac713f99
sha512: bbde50cbc25483fe349a86a7131609268c21506a3c17f3a60594b5cb62fc831420791e43eb23622750af74c9cfa967a6d1ef9d3c6f437e9bb5e32832e4169447
ssdeep: 24576:NDEBlZL/sD2+lqYjAaPwsLNsXNwMgrNuqe:eeAddFr5
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0

PWS:MSIL/Stimilini.T also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 004d87d71 )
Elastic malicious (high confidence)
DrWeb Trojan.Starter.2890
Cynet Malicious (score: 99)
ALYac Gen:Variant.MSILHeracles.3769
Cylance Unsafe
Zillya Trojan.Injector.Win32.602381
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.47ac73f7
K7GW Trojan ( 004d87d71 )
Cybereason malicious.427d93
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Injector.MZQ
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Blocker.hyvs
BitDefender Gen:Variant.MSILHeracles.3769
NANO-Antivirus Trojan.Win32.Starter.esvqcg
MicroWorld-eScan Gen:Variant.MSILHeracles.3769
Tencent Win32.Trojan.Blocker.Hsry
Ad-Aware Gen:Variant.MSILHeracles.3769
Sophos Mal/Generic-S
Comodo Malware@#lpgj6h2v9jbw
BitDefenderTheta Gen:NN.ZemsilF.34678.!mZ@aeGdEKm
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.dh
FireEye Generic.mg.9a12816427d93223
Emsisoft Gen:Variant.MSILHeracles.3769 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Blocker.aic
Avira TR/Dropper.MSIL.Gen7
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft PWS:MSIL/Stimilini.T
AegisLab Trojan.Win32.Blocker.j!c
GData Gen:Variant.MSILHeracles.3769
McAfee Artemis!9A12816427D9
MAX malware (ai score=100)
VBA32 Trojan-Ransom.Blocker
Malwarebytes Spyware.PasswordStealer.MSIL
Panda Trj/CI.A
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.Injector!HtlKObPbVys
Ikarus Trojan.ILAgent
Fortinet MSIL/Injector.NII!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HgIASPkA

How to remove PWS:MSIL/Stimilini.T 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

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 PWS:MSIL/Stimilini.T 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 PWS:MSIL/Stimilini.T 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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