MSIL/TrojanDropper.Small.S

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

What is MSIL/TrojanDropper.Small.S infection?

In this article you will discover about the definition of MSIL/TrojanDropper.Small.S and its negative effect on your computer. Such ransomware are a type of malware that is specified by on the internet frauds to require paying the ransom by a sufferer.

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In the majority of the situations, MSIL/TrojanDropper.Small.S virus will instruct its sufferers to start funds transfer for the purpose of neutralizing the amendments that the Trojan infection has actually presented to the target’s tool.

MSIL/TrojanDropper.Small.S Summary

These modifications 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.
  • 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.
  • Ciphering the documents found on the sufferer’s hard disk drive — so the victim can no longer use the data;
  • Preventing regular accessibility to the target’s workstation;

MSIL/TrojanDropper.Small.S

The most normal networks through which MSIL/TrojanDropper.Small.S Trojans are infused are:

  • By methods of phishing emails;
  • As a repercussion of user ending up on a resource that holds a malicious software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the victim’s PC or protect against the tool from operating in a correct fashion – while additionally placing a ransom note that points out the need for the victims to impact the settlement for the objective of decrypting the documents or bring back the data system back to the first problem. In many circumstances, the ransom money note will certainly come up when the client reboots the PC after the system has actually already been harmed.

MSIL/TrojanDropper.Small.S distribution channels.

In different corners of the globe, MSIL/TrojanDropper.Small.S expands by jumps as well as bounds. Nonetheless, the ransom notes as well as tricks of obtaining the ransom money quantity might vary relying on specific regional (local) setups. The ransom notes and also techniques of extorting the ransom money quantity might differ depending on certain regional (local) settings.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having actually found some unlicensed applications enabled on the target’s device. The alert after that requires the individual to pay the ransom.

    Faulty declarations regarding prohibited material.

    In nations where software piracy is less popular, this technique is not as effective for the cyber fraudulences. Additionally, the MSIL/TrojanDropper.Small.S popup alert might wrongly declare to be originating from a police institution and will certainly report having situated youngster porn or various other illegal data on the gadget.

    MSIL/TrojanDropper.Small.S popup alert might incorrectly assert to be acquiring from a regulation enforcement organization as well as will report having located youngster porn or various other illegal information on the tool. The alert will in a similar way have a need for the customer to pay the ransom.

Technical details

File Info:

crc32: D1C9939F
md5: 7dbe6b9420ddd5bb46ef6fe7d0c34490
name: 7DBE6B9420DDD5BB46EF6FE7D0C34490.mlw
sha1: 12956bd9e6ca823ac4ec6a26c44a85fba868cf0c
sha256: ef26663eee670a4dd55e19249a648a05087116f359bde7c655b394dc9da1fbb2
sha512: 35781bdd98602ca4b44a8f7eb1d8ff68fcd108470b266c3ce2539136a0832d6e1a403c730fdc3c895885a8fb4d78520e4481b399abf3576246bdec3f7e0db2d7
ssdeep: 3072:DG9DeX7DrMkhvRLHVnPfiQFNenWliIflZSipxPJsopfNZYyYVwM48qdg5U2+KeH:KWr5FjeWj8ipxJf9YeMWdkN+Xc5
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright:
Assembly Version: 0.0.0.0
InternalName: foto.exe
FileVersion: 0.0.0.0
ProductVersion: 0.0.0.0
FileDescription:
OriginalFilename: foto.exe

MSIL/TrojanDropper.Small.S also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 00217c381 )
Elasticmalicious (high confidence)
DrWebTrojan.Siggen3.14508
CynetMalicious (score: 100)
ALYacGen:Variant.Ursu.681990
CylanceUnsafe
ZillyaTrojan.Keylogger.Win32.27
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaTrojan:MSIL/Blocker.000daa92
K7GWTrojan ( 00217c381 )
Cybereasonmalicious.420ddd
ESET-NOD32a variant of MSIL/TrojanDropper.Small.S
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan-Ransom.MSIL.Blocker.gen
BitDefenderGen:Variant.Ursu.681990
NANO-AntivirusTrojan.Win32.Blocker.didwvd
MicroWorld-eScanGen:Variant.Ursu.681990
TencentMsil.Trojan.Blocker.Alte
Ad-AwareGen:Variant.Ursu.681990
SophosML/PE-A
ComodoMalware@#5o7yral2fpmd
BitDefenderThetaGen:NN.ZemsilF.34608.pq0@a0tp49o
VIPRETrojan.Win32.Generic!BT
FireEyeGeneric.mg.7dbe6b9420ddd5bb
EmsisoftGen:Variant.Ursu.681990 (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Dropper.Gen2
eGambitUnsafe.AI_Score_61%
MicrosoftPWS:MSIL/Petun.A
ArcabitTrojan.Ursu.DA6806
AegisLabTrojan.Win32.Generic.lBQJ
GDataGen:Variant.Ursu.681990
McAfeeArtemis!7DBE6B9420DD
MAXmalware (ai score=99)
VBA32TrojanSpy.MSIL.Keylogger
MalwarebytesMalware.Heuristic.1004
PandaTrj/GdSda.A
RisingRansom.Blocker!8.12A (CLOUD)
YandexTrojanSpy.KeyLogger!EoazelkM9QI
IkarusTrojan-Dropper.MSIL.Small
FortinetMSIL/Small.S!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Blocker.HgIASOYA

How to remove MSIL/TrojanDropper.Small.S virus?

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 MSIL/TrojanDropper.Small.S 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 MSIL/TrojanDropper.Small.S 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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