Trojan:Win32/Ursnif.KSV!MTB

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

What is Trojan:Win32/Ursnif.KSV!MTB infection?

In this article you will find about the definition of Trojan:Win32/Ursnif.KSV!MTB and its adverse effect on your computer system. Such ransomware are a kind of malware that is clarified by online scams to demand paying the ransom money by a target.

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Most of the cases, Trojan:Win32/Ursnif.KSV!MTB ransomware will instruct its victims to launch funds move for the objective of neutralizing the changes that the Trojan infection has presented to the victim’s device.

Trojan:Win32/Ursnif.KSV!MTB 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.
  • At least one process apparently crashed during execution;
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Code injection with CreateRemoteThread in a remote process;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Creates a slightly modified copy of itself;
  • Ciphering the documents found on the sufferer’s disk drive — so the target can no longer make use of the information;
  • Preventing regular access 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.

Trojan:Win32/Ursnif.KSV!MTB

The most regular networks where Trojan:Win32/Ursnif.KSV!MTB are injected are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that organizes a malicious software;

As soon as the Trojan is effectively infused, it will either cipher the data on the victim’s PC or avoid the device from working in a correct fashion – while also placing a ransom note that discusses the need for the targets to effect the settlement for the function of decrypting the files or recovering the documents system back to the preliminary problem. In most circumstances, the ransom money note will show up when the client reboots the PC after the system has actually currently been harmed.

Trojan:Win32/Ursnif.KSV!MTB circulation networks.

In various corners of the globe, Trojan:Win32/Ursnif.KSV!MTB expands by leaps as well as bounds. However, the ransom money notes and tricks of obtaining the ransom money amount might differ depending upon particular local (local) settings. The ransom notes and also tricks of extorting the ransom money amount may differ depending on certain neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software.

    In certain locations, the Trojans typically wrongfully report having discovered some unlicensed applications enabled on the target’s gadget. The alert then requires the individual to pay the ransom money.

    Faulty declarations about unlawful content.

    In countries where software piracy is less preferred, this technique is not as reliable for the cyber fraudulences. Alternatively, the Trojan:Win32/Ursnif.KSV!MTB popup alert might falsely declare to be stemming from a law enforcement organization as well as will certainly report having situated youngster pornography or various other prohibited data on the tool.

    Trojan:Win32/Ursnif.KSV!MTB popup alert may wrongly declare to be acquiring from a law enforcement organization and also will report having situated kid porn or other prohibited information on the device. The alert will in a similar way have a need for the user to pay the ransom.

Technical details

File Info:

crc32: A49F7538
md5: 44ee0764cb17c3f25e055c684c5bbd40
name: 44EE0764CB17C3F25E055C684C5BBD40.mlw
sha1: 6ef0948561356de1e62f8a6634922e35ede443bc
sha256: 9c61f4538ffc56eaf9c7f8b8f17bd47b952f27b9bda3937d9e2346be0c307575
sha512: 6663faf6ffa667a941ec5f5754640df1b5082008b8cbefbcee72f75a20c794cea78e6cd5dfe5c711950c99223788978a14466f02e73b66a1b88246e051c0b91c
ssdeep: 3072:rBI5ArKGCnhgU1XA+ArXjeaMoh6lgUaVwQ+/76bSSN+PS7VyoCeJ6ik7G:rK5ArKjbAxXSaegUqGeGpBohM7
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ursnif.KSV!MTB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
DrWebTrojan.Inject1.53269
MicroWorld-eScanWin32.Doboc.Gen.1
CAT-QuickHealTrojan.Mauvaise.SL1
Qihoo-360Win32/Virus.Ransom.4b0
ALYacWin32.Doboc.Gen.1
CylanceUnsafe
VIPREVirus.Win32.Ursnif.ha (v)
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0040fa661 )
BitDefenderWin32.Doboc.Gen.1
K7GWTrojan ( 0040fa661 )
CrowdStrikewin/malicious_confidence_100% (D)
BitDefenderThetaAI:FileInfector.1210116D11
CyrenW32/Virus.LSLV-1164
SymantecW32.Tempedreve.E!inf
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Trojan.Doboc-320
KasperskyVirus.Win32.PolyRansom.c
AlibabaVirus:Win32/PolyRansom.507420f2
NANO-AntivirusTrojan.Win32.PolyRansom.dpzfcr
AegisLabVirus.Win32.PolyRansom.mhJM
RisingVirus.Ursnif!8.859 (CLOUD)
Ad-AwareWin32.Doboc.Gen.1
TACHYONTrojan/W32.Doboc
EmsisoftWin32.Doboc.Gen.1 (B)
ComodoTrojWare.Win32.Ursnif.KIL@5jjifs
F-SecureTrojan.TR/Crypt.ZPACK.Gen
BaiduWin32.Trojan.Kryptik.iq
ZillyaVirus.PolyRansom.Win32.3
TrendMicroPE_URSNIF.E-O
McAfee-GW-EditionBehavesLike.Win32.DocumentCrypt.cc
FireEyeGeneric.mg.44ee0764cb17c3f2
SophosML/PE-A + W32/MPhage-B
IkarusTrojan.Win32.Crypt
JiangminVirus.PolyRansom.dv
WebrootW32.Rogue.Gen
AviraTR/Crypt.ZPACK.Gen
Antiy-AVLVirus/Win32.PolyRansom.c
KingsoftWin32.Infected.AutoInfector.a.(kcloud)
MicrosoftTrojan:Win32/Ursnif.KSV!MTB
ArcabitWin32.Doboc.Gen.1
SUPERAntiSpywareTrojan.Agent/Gen-FakeAV
ZoneAlarmVirus.Win32.PolyRansom.c
GDataWin32.Doboc.Gen.1
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Ursnif.R239873
Acronissuspicious
McAfeeW32/DocumentCrypt
MAXmalware (ai score=88)
VBA32SScope.Trojan.FakeAV.01681
MalwarebytesPolyRansom.Virus.FileInfector.DDS
PandaW32/CryptD.C
ESET-NOD32Win32/Spy.Tuscas.K
TrendMicro-HouseCallPE_URSNIF.E-O
TencentTrojan.Win32.Tuscas.a
YandexTrojan.GenAsa!RK3x+npEgzs
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_99%
FortinetW32/Tuscas.A!tr
AVGWin32:Malware-gen
Cybereasonmalicious.4cb17c
Paloaltogeneric.ml
MaxSecureVirus.w32.PolyRansom.C

How to remove Trojan:Win32/Ursnif.KSV!MTB 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 Trojan:Win32/Ursnif.KSV!MTB 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/Ursnif.KSV!MTB 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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