Adversaries may use scripts to aid in operations and perform multiple actions that would otherwise be manual. Scripting is useful for speeding up operational tasks and reducing the time required to gain access to critical resources. Some scripting languages may be used to bypass process monitoring mechanisms by directly interacting with the operating system at an API level instead of calling other programs. Common scripting languages for Windows include VBScript and PowerShell but could also be in the form of command-line batch scripts.
Scripts can be embedded inside Office documents as macros that can be set to execute when files used in Spearphishing Attachment and other types of spearphishing are opened. Malicious embedded macros are an alternative means of execution than software exploitation through Exploitation for Client Execution, where adversaries will rely on macros being allowed or that the user will accept to activate them.
Many popular offensive frameworks exist which use forms of scripting for security testers and adversaries alike. Metasploit , Veil , and PowerSploit  are three examples that are popular among penetration testers for exploit and post-compromise operations and include many features for evading defenses. Some adversaries are known to use PowerShell. 
|APT1||APT1 has used batch scripting to automate execution of commands. |
|APT19||APT19 downloaded and launched code within a SCT file. |
|APT28||An APT28 loader Trojan uses a batch script to run its payload. The group has also used macros to execute payloads.    |
|APT29||APT29 has used encoded PowerShell scripts uploaded to CozyCar installations to download and install SeaDuke, as well as to evade defenses.  |
|APT3||APT3 has used PowerShell on victim systems to download and run payloads after exploitation. |
|APT32||APT32 has used macros, PowerShell scripts, COM scriptlets, and VBS scripts.  |
|APT37||APT37 executes shellcode and a script to decode Base64 strings. |
|APT39||APT39 utilized custom scripts to perform internal reconnaissance. |
|Bisonal||Bisonal's dropper creates VBS scripts on the victim’s machine. |
|BRONZE BUTLER||BRONZE BUTLER has used VBS, VBE, and batch scripts for execution. |
|China Chopper||China Chopper's server component is a text based payload available in a variety of scripting languages. |
|Cobalt Strike||Cobalt Strike can use PowerShell, Python, VBA, PowerSploit, other scripting frameworks to perform execution.  |
|CoinTicker||CoinTicker executes a bash script to establish a reverse shell and a Python script to download its second stage. |
|Comnie||Comnie executes BAT and VBS scripts. |
|Dark Caracal||Dark Caracal has used macros in Word documents that would download a second stage if executed. |
|DarkComet||DarkComet can execute various types of scripts on the victim’s machine. |
|Darkhotel||Darkhotel has dropped an mspaint.lnk shortcut to disk which launches a shell script that downloads and executes a file. |
|DealersChoice||DealersChoice makes modifications to open-source scripts from GitHub and executes them on the victim’s machine. |
|Deep Panda||Deep Panda has used PowerShell scripts to download and execute programs in memory, without writing to disk. |
|Denis||Denis executes shellcode on the victim's machine. |
|Dragonfly 2.0||Dragonfly 2.0 used various types of scripting to perform operations, including Python and batch scripts. The group was observed installing Python 2.7 on a victim.  |
|Emotet||Emotet has sent Microsoft Word documents with embedded macros that will invoke scripts to download additional payloads.     |
|Empire||Empire has modules for executing scripts. |
|EvilBunny||EvilBunny has an integrated scripting engine to download and execute Lua scripts. |
|Exaramel for Windows||Exaramel for Windows has a command to execute VBS and GO scripts on the victim’s machine. |
|FELIXROOT||FELIXROOT executes batch scripts on the victim’s machine. |
|FIN10||FIN10 has executed malicious .bat files containing PowerShell commands. |
|FIN4||FIN4 has used VBA macros to display a dialog box and collect victim credentials.  |
|FIN5||FIN5 scans processes on all victim systems in the environment and uses automated scripts to pull back the results. |
|FIN6||FIN6 has used a Metasploit PowerShell module to download and execute shellcode and to set up a local listener. FIN6 has also used scripting to iterate through a list of compromised PoS systems, copy data to a log file, and remove the original data files.  |
|FIN8||FIN8 has used a Batch file to automate frequently executed post compromise cleanup activities. |
|Gallmaker||Gallmaker used PowerShell scripts for execution. |
|Gamaredon Group||Gamaredon Group has used various batch scripts to establish C2, download additional files, and conduct other functions. |
|Gorgon Group||Gorgon Group has used macros in Spearphishing Attachments as well as executed VBScripts on victim machines. |
|Helminth||One version of Helminth consists of VBScript and PowerShell scripts. The malware also uses batch scripting. |
|HiddenWasp||HiddenWasp uses a script to automate tasks on the victim's machine and to assist in execution. |
|Honeybee||Honeybee embeds a Visual Basic script within a malicious Word document as part of initial access; the script is executed when the Word document is opened. The actors also used batch scripting. |
|JCry||JCry has used VBS scripts. |
|JHUHUGIT||JHUHUGIT uses a .bat file to execute a .dll. |
|jRAT||jRAT has been distributed as HTA files with VBScript+JScript. |
|Ke3chang||Ke3chang has used batch scripts in its malware to install persistence mechanisms. |
|KeyBoy||KeyBoy uses Python and VBS scripts for installing files and performing execution. |
|Keydnap||Keydnap uses Python for scripting to execute additional commands. |
|Koadic||Koadic performs most of its operations using Windows Script Host (Jscript and VBScript) and runs arbitrary shellcode . |
|Lazarus Group||A Destover-like variant used by Lazarus Group uses a batch file mechanism to delete its binaries from the system. |
|Machete||Machete uses Python scripts.  |
|Machete||Machete used multiple compiled Python scripts on the victim’s system. |
|Magic Hound||Magic Hound malware has used .vbs scripts for execution. |
|menuPass||menuPass has used malicious macros embedded inside Office documents to execute files.  |
|MoonWind||MoonWind uses batch scripts for various purposes, including to restart and uninstall itself. |
|NanHaiShu||NanHaiShu executes additional Jscript and VBScript code on the victim's machine. |
|NavRAT||NavRAT loads malicious shellcode and executes it in memory. |
|OceanSalt||OceanSalt has been executed via malicious macros. |
|OilRig||OilRig has used various types of scripting for execution, including .bat and .vbs scripts. The group has also used macros to deliver malware such as QUADAGENT and OopsIE.     |
|OopsIE||OopsIE creates and uses a VBScript as part of its persistent execution.  |
|OSX/Shlayer||OSX/Shlayer can use bash scripts to check the macOS version and download payloads. |
|OSX_OCEANLOTUS.D||OSX_OCEANLOTUS.D uses macros for execution as well as VBS and PowerShell scripts. |
|PowerStallion||PowerStallion uses PowerShell loops to iteratively check for available commands in its OneDrive C2 server. |
|Proton||Proton uses macOS' .command file type to script actions. |
|Proxysvc||Proxysvc uses a batch file to delete itself. |
|PUNCHBUGGY||PUNCHBUGGY has used PowerShell, python, and shellcode scripts. |
|Pupy||Pupy can use an add on feature when creating payloads that allows you to create custom Python scripts (“scriptlets”) to perform tasks offline (without requiring a session) such as sandbox detection, adding persistence, etc. |
|QUADAGENT||QUADAGENT uses VBScripts and batch scripts. |
|Rancor||Rancor has used shell and VBS scripts as well as embedded macros for execution. |
|Remcos||Remcos uses Python scripts. |
|Remexi||Remexi uses AutoIt and VBS scripts throughout its execution process. |
|Revenge RAT||Revenge RAT executes scripts on the victim's machine.  |
To assist in establishing persistence, RogueRobin creates
|RunningRAT||RunningRAT uses a batch file to kill a security program task and then attempts to remove itself. |
|SamSam||SamSam uses custom batch scripts to execute some of its components. |
|SeaDuke||SeaDuke uses a module to execute Mimikatz with PowerShell to perform Pass the Ticket. |
|Silence||Silence has used JS, VBS, and PowerShell scripts. |
|Smoke Loader||Smoke Loader adds a Visual Basic script in the Startup folder to deploy the payload. |
|SpeakUp||SpeakUp uses Perl and Python scripts. |
|Stealth Falcon||Stealth Falcon malware uses PowerShell and WMI to script data collection and command execution on the victim. |
|StoneDrill||StoneDrill has several VBS scripts used throughout the malware's lifecycle. |
|TA459||TA459 has a VBScript for execution. |
|TrickBot||TrickBot has used macros in Excel documents to download and deploy the malware on the user’s machine. |
|Turla||Turla has used PowerShell and VBS scripts throughout its operations. |
|TYPEFRAME||TYPEFRAME can uninstall malware components using a batch script. Additionally, a malicious Word document used for delivery uses VBA macros for execution. |
|Ursnif||Ursnif droppers have used VBA macros and PowerShell to download and execute the malware's full executable payload. |
|WIRTE||WIRTE has used VBS and PowerShell scripts throughout its operation. |
|Zeus Panda||Zeus Panda can launch remote scripts on the victim’s machine. |
|Application Isolation and Sandboxing||Configure Office security settings enable Protected View, to execute within a sandbox environment, and to block macros through Group Policy. Other types of virtualization and application microsegmentation may also mitigate the impact of compromise.|
|Disable or Remove Feature or Program||Turn off unused features or restrict access to scripting engines such as VBScript or scriptable administration frameworks such as PowerShell.|
Scripting may be common on admin, developer, or power user systems, depending on job function. If scripting is restricted for normal users, then any attempts to enable scripts running on a system would be considered suspicious. If scripts are not commonly used on a system, but enabled, scripts running out of cycle from patching or other administrator functions are suspicious. Scripts should be captured from the file system when possible to determine their actions and intent.
Scripts are likely to perform actions with various effects on a system that may generate events, depending on the types of monitoring used. Monitor processes and command-line arguments for script execution and subsequent behavior. Actions may be related to network and system information Discovery, Collection, or other scriptable post-compromise behaviors and could be used as indicators of detection leading back to the source script.
Analyze Office file attachments for potentially malicious macros. Execution of macros may create suspicious process trees depending on what the macro is designed to do. Office processes, such as winword.exe, spawning instances of cmd.exe, script application like wscript.exe or powershell.exe, or other suspicious processes may indicate malicious activity. 
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