Kategorie: Backdoor
Backdoors sollen bösartigen Benutzern die Fernsteuerung über einen infizierten Computer ermöglichen. In Bezug auf die Funktionalität ähneln Backdoors vielen Verwaltungssystemen, die von Softwareentwicklern entworfen und vertrieben werden.Diese Arten von bösartigen Programmen ermöglichen es, alles zu tun, was der Autor auf dem infizierten Computer möchte: Dateien senden und empfangen, Dateien starten oder löschen, Nachrichten anzeigen, Daten löschen, den Computer neu starten usw.
Die Programme in dieser Kategorie werden häufig verwendet, um eine Gruppe von Opfercomputern zu vereinigen und ein Botnet- oder Zombie-Netzwerk zu bilden. Dies gibt bösartigen Benutzern die zentrale Kontrolle über eine Armee von infizierten Computern, die dann für kriminelle Zwecke verwendet werden können.
Es gibt auch eine Gruppe von Backdoors, die sich über Netzwerke verbreiten und andere Computer infizieren können, wie Net-Worms es tun. Der Unterschied ist, dass sich solche Backdoors nicht automatisch verbreiten (wie Net-Worms), sondern nur auf einen speziellen "Befehl" von dem bösartigen Benutzer, der sie kontrolliert.
Mehr Informationen
Plattform: MSIL
Die Common Intermediate Language (früher als Microsoft Intermediate Language oder MSIL bezeichnet) ist eine von Microsoft entwickelte Zwischensprache für das .NET Framework. CIL-Code wird von allen Microsoft .NET-Compilern in Microsoft Visual Studio (Visual Basic .NET, Visual C ++, Visual C # und anderen) generiert.Familie: Backdoor.MSIL.AsyncRat
No family descriptionExamples
6A382667F9FBE368C860B5DA8E6FAB7CTactics and Techniques: Mitre*
TA0002
Execution
The adversary is trying to run malicious code. Execution consists of techniques that result in adversary-controlled code running on a local or remote system. Techniques that run malicious code are often paired with techniques from all other tactics to achieve broader goals, like exploring a network or stealing data. For example, an adversary might use a remote access tool to run a PowerShell script that does Remote System Discovery.
T1204.002
Malicious File
An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to open a file that will lead to code execution. This user action will typically be observed as follow-on behavior from Spearphishing Attachment. Adversaries may use several types of files that require a user to execute them, including .doc, .pdf, .xls, .rtf, .scr, .exe, .lnk, .pif, .cpl, and .reg.
TA0005
Defense Evasion
The adversary is trying to avoid being detected. Defense Evasion consists of techniques that adversaries use to avoid detection throughout their compromise. Techniques used for defense evasion include uninstalling/disabling security software or obfuscating/encrypting data and scripts. Adversaries also leverage and abuse trusted processes to hide and masquerade their malware. Other tactics' techniques are cross-listed here when those techniques include the added benefit of subverting defenses.
T1140
Deobfuscate/Decode Files or Information
Adversaries may use Obfuscated Files or Information to hide artifacts of an intrusion from analysis. They may require separate mechanisms to decode or deobfuscate that information depending on how they intend to use it. Methods for doing that include built-in functionality of malware or by using utilities present on the system.
T1497.001
System Checks
Adversaries may employ various system checks to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from Virtualization/Sandbox Evasion during automated discovery to shape follow-on behaviors.
TA0007
Discovery
The adversary is trying to figure out your environment. Discovery consists of techniques an adversary may use to gain knowledge about the system and internal network. These techniques help adversaries observe the environment and orient themselves before deciding how to act. They also allow adversaries to explore what they can control and what's around their entry point in order to discover how it could benefit their current objective. Native operating system tools are often used toward this post-compromise information-gathering objective.
T1012
Query Registry
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
T1497.001
System Checks
Adversaries may employ various system checks to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from Virtualization/Sandbox Evasion during automated discovery to shape follow-on behaviors.
T1614.001
System Language Discovery
Adversaries may attempt to gather information about the system language of a victim in order to infer the geographical location of that host. This information may be used to shape follow-on behaviors, including whether the adversary infects the target and/or attempts specific actions. This decision may be employed by malware developers and operators to reduce their risk of attracting the attention of specific law enforcement agencies or prosecution/scrutiny from other entities.
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