ObliqueRAT

Adversaries may also use internationalized domain names (IDNs) and different character sets (e.g. Cyrillic, Greek, etc.) to execute "IDN homograph attacks," creating visually similar lookalike domains used to deliver malware to victim machines.

Adversaries may use acquired domains for a variety of purposes, including for Phishing, Drive-by Compromise, and Command and Control.

The content repeatedly describes malware and threat actors establishing persistence by adding values under HKCU/HKLM\Software\Microsoft\Windows\CurrentVersion\Run or RunOnce, and by placing executables, scripts, or .lnk files in the Startup folder. | Examples include malware copied to '%AppData%\Microsoft\Windows\Start Menu\Programs\Startup', creation of '.lnk' shortcuts in Startup, and scripts or batch files placed in Startup folders.

The content repeatedly describes malware and threat actors establishing persistence by adding values under HKCU/HKLM\Software\Microsoft\Windows\CurrentVersion\Run or RunOnce, and by placing executables, scripts, or .lnk files in the Startup folder. | Examples include malware copied to '%AppData%\Microsoft\Windows\Start Menu\Programs\Startup', creation of '.lnk' shortcuts in Startup, and scripts or batch files placed in Startup folders.

Several entries describe malware examining running processes to determine if a debugger, sandbox, virtual environment, or analysis/security tools are present, such as AsyncRAT checking for a debugger, RogueRobin enumerating Wireshark and Sysinternals processes, and P8RAT checking for processes associated with virtual environments.

The content repeatedly describes malware and threat actors collecting usernames, identifying logged-in users, running whoami/query user/quser, checking whether the current user is an administrator, enumerating user sessions, and gathering account details from compromised hosts.

The content repeatedly describes malware and threat actors obtaining lists of running processes, using utilities such as tasklist, ps, WMI, Get-Process, CreateToolhelp32Snapshot, EnumProcesses, and similar APIs/commands to enumerate active processes on victim systems.

The content repeatedly describes malware and threat actors collecting host details such as OS version, hostname, architecture, CPU, memory, BIOS, domain, language, and other configuration data; e.g., "APT41 uses multiple built-in commands such as systeminfo and net config Workstation to enumerate victim system basic configuration information."

The content repeatedly describes malware and threat actors listing files and directories, enumerating drives, searching for files by extension/name/path, retrieving file metadata, and browsing file systems (for example: "APT28 has used Forfiles to locate PDF, Excel, and Word documents during collection" and "cmd can be used to find files and directories with native functionality such as dir commands").

The content repeatedly describes malware and threat actors identifying, monitoring, or enumerating connected peripheral devices such as USB mass storage, Bluetooth devices, printers, smart card readers, cameras, Apple devices, VGA/display devices, and removable drives.

Several entries describe malware examining running processes to determine if a debugger, sandbox, virtual environment, or analysis/security tools are present, such as AsyncRAT checking for a debugger, RogueRobin enumerating Wireshark and Sysinternals processes, and P8RAT checking for processes associated with virtual environments.

AppleSeed can find and collect data from removable media devices. APT28 backdoor may collect the entire contents of an inserted USB device. Aria-body has the ability to collect data from USB devices. BADNEWS copies files with certain extensions from USB devices to a predefined directory.

The content repeatedly describes adversaries and malware storing collected data, command output, credentials, archives, or files in local temporary folders, working directories, hidden directories, registry locations, recycle bins, or specific files prior to exfiltration.

"Agent Tesla can capture screenshots of the victim’s desktop"; "AppleSeed can take screenshots on a compromised host"; "APT28 has used tools to take screenshots from victims"; "Cobalt Strike's Beacon payload is capable of capturing screenshots"; "PowerSploit's Get-TimedScreenshot Exfiltration module can take screenshots at regular intervals"; "Hydraq includes a component based on the code of VNC that can stream a live feed of the desktop"

Agent Tesla can access the victim’s webcam and record video. AsyncRAT can record screen content on targeted systems. Bandook has modules that are capable of capturing video from a victim's webcam. ... ZxShell has a command to perform video device spying.

AppleSeed has divided files if the size is 0x1000000 bytes or more. APT28 has split archived exfiltration files into chunks smaller than 1MB. APT41 transfers post-exploitation files dividing the payload into fixed-size chunks to evade detection.