MSIL/TrojanDropper.Small.AM

Written by Robert Bailey

What is MSIL/TrojanDropper.Small.AM infection?

In this short article you will certainly discover about the interpretation of MSIL/TrojanDropper.Small.AM and also its unfavorable influence on your computer. Such ransomware are a form of malware that is clarified by on the internet scams to require paying the ransom by a target.

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In the majority of the instances, MSIL/TrojanDropper.Small.AM ransomware will certainly instruct its targets to initiate funds move for the purpose of reducing the effects of the changes that the Trojan infection has introduced to the target’s device.

MSIL/TrojanDropper.Small.AM Summary

These adjustments can be as complies with:

  • 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.
  • 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.

  • 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.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • A process was set to shut the system down when terminated;
  • 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
  • Ciphering the papers situated on the target’s disk drive — so the victim can no more make use of the information;
  • Preventing routine 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
securitytactics.ddns.netRansom.Blocker!8.12A (CLOUD)

MSIL/TrojanDropper.Small.AM

The most typical channels whereby MSIL/TrojanDropper.Small.AM Trojans are injected are:

  • By ways of phishing emails;
  • As a consequence of user ending up on a source that holds a harmful software;

As soon as the Trojan is successfully infused, it will either cipher the data on the sufferer’s PC or protect against the gadget from functioning in a proper fashion – while also positioning a ransom money note that points out the need for the victims to effect the payment for the function of decrypting the files or recovering the documents system back to the initial problem. In the majority of instances, the ransom money note will turn up when the client restarts the COMPUTER after the system has actually currently been harmed.

MSIL/TrojanDropper.Small.AM circulation channels.

In numerous corners of the world, MSIL/TrojanDropper.Small.AM expands by leaps as well as bounds. Nonetheless, the ransom notes as well as methods of obtaining the ransom money amount may differ relying on certain local (local) setups. The ransom notes and techniques of obtaining the ransom amount may differ depending on certain regional (regional) settings.

Ransomware injection

For example:

    Faulty notifies about unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s device. The alert after that demands the individual to pay the ransom money.

    Faulty declarations concerning illegal content.

    In nations where software application piracy is less prominent, this approach is not as effective for the cyber scams. Alternatively, the MSIL/TrojanDropper.Small.AM popup alert might wrongly claim to be stemming from a police organization and also will report having situated kid porn or other prohibited data on the device.

    MSIL/TrojanDropper.Small.AM popup alert might wrongly assert to be acquiring from a regulation enforcement institution and will certainly report having situated youngster pornography or various other unlawful data on the device. The alert will in a similar way consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 8C8A88E9
md5: ca158e283d6edaaef8870e8c7c5c7c84
name: CA158E283D6EDAAEF8870E8C7C5C7C84.mlw
sha1: 7a622e4afa14807d88a89555b81c4096fe03d79c
sha256: 5d6a80ebbe59351fd1ab84324eb9f212c4e420c1c77c875cc4280b492eba006d
sha512: f7cc7d6e24ff7948e5b5356b09be6583d90ec084d9a5ebc09c87a77b1cd9ebca932cff64d3337d9271e048251de2ad170861f8778151bd6f1b834fbd62e037ce
ssdeep: 24576:hbzbQ802akZb7f5Zp/tlm/DIYhRQe3nVr5YTRIqB6CRDo+QT:1zE8uwbnp/KMYM4lkDD
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright FFC Meow
Assembly Version: 1.0.0.0
InternalName: fafa.exe
FileVersion: 1.0.0.1
CompanyName: CutePets
Comments: Desktop Pet
ProductName: FaFa
ProductVersion: 1.0.0.1
FileDescription: fafa
OriginalFilename: fafa.exe

MSIL/TrojanDropper.Small.AM also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader24.681
MicroWorld-eScanTrojan.MSIL.Basic.6.Gen
FireEyeGeneric.mg.ca158e283d6edaae
McAfeeArtemis!CA158E283D6E
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Generic.4!c
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 004561691 )
BitDefenderTrojan.MSIL.Basic.6.Gen
K7GWTrojan ( 004561691 )
Cybereasonmalicious.83d6ed
BitDefenderThetaGen:NN.ZemsilF.34590.sn0@ai7Ww3c
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Backdoor.MSIL.Generic
NANO-AntivirusTrojan.Win32.Blocker.ewunji
RisingRansom.Blocker!8.12A (CLOUD)
Ad-AwareTrojan.MSIL.Basic.6.Gen
SophosMal/Generic-S
ComodoMalware@#308mnyvhbgo3n
F-SecureTrojan.TR/Dropper.MSIL.Gen
ZillyaTrojan.GenericKD.Win32.99484
McAfee-GW-EditionBehavesLike.Win32.Generic.tm
EmsisoftTrojan.MSIL.Basic.6.Gen (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Dropper.MSIL.Gen
MicrosoftBackdoor:MSIL/Bladabindi
ArcabitTrojan.MSIL.Basic.6.Gen
ZoneAlarmHEUR:Backdoor.MSIL.Generic
GDataTrojan.MSIL.Basic.6.Gen
CynetMalicious (score: 85)
VBA32Trojan-Ransom.Blocker
ALYacTrojan.MSIL.Basic.6.Gen
MAXmalware (ai score=99)
PandaTrj/GdSda.A
ESET-NOD32a variant of MSIL/TrojanDropper.Small.AM
TencentWin32.Trojan.Blocker.Sxnx
YandexTrojan.Blocker!1QzdJ2j4yjk
IkarusTrojan-Dropper.Win32.Decay
eGambitUnsafe.AI_Score_100%
FortinetMSIL/Small.AM!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Dropper.a9c

How to remove MSIL/TrojanDropper.Small.AM 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

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.AM 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 MSIL/TrojanDropper.Small.AM 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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