Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects the creation of a hidden shell script file at '/etc/profile.d/.sh.local', a common persistence mechanism used by the MYRA RAT. This file is automatically executed by POSIX-compliant shells during the login process to maintain persistence on Linux systems.
Detects a potential S3 bucket hijacking attempt where a bucket is deleted by one AWS account and subsequently recreated by a different AWS account within a 30-minute window. This behavior could indicate an attempt to intercept cross-account replication or misdirected data flows.
Detects a sequence of events where a cloud storage bucket is deleted and then immediately recreated with the same name. This pattern is indicative of a potential bucket hijacking attack, where an adversary attempts to take ownership of a bucket to intercept data streams, such as logging sinks, application data, or replication traffic.
Detects behavior indicative of the AMOS (Atomic macOS) infostealer, where a malicious process uses 'osascript' to display a fake System Preferences password prompt to the user and then attempts to validate the harvested credentials using 'dscl -authonly'.
Detects execution of the macOS 'security' utility to harvest generic or internet passwords from the Keychain, a technique commonly associated with the AMOS (Atomic macOS Stealer) infostealer for credential theft.
Detects the AMOS (Atomic macOS Stealer) infection chain where a shell (e.g., Terminal, bash) executes curl to download a DMG file to a temporary directory, followed immediately by the use of hdiutil with the -nobrowse flag to mount the disk image silently, effectively bypassing macOS Gatekeeper UI prompts to the user.
Detects the creation of a LaunchAgent property list (.plist) file on macOS that uses a spoofed Apple namespace label (com.apple.system.services.activity). This behavior is characteristic of the Gaslight malware family attempting to establish persistence.
Detects automated lateral movement attempts using sshpass to perform password spraying or authentication against PeopleSoft-related service accounts (psoft, oracle, linuxadm). The rule specifically flags the use of sshpass with lax security settings (StrictHostKeyChecking=no), identifying a pattern associated with the uon_fanout.sh post-exploitation script.
Detects the execution of PowerShell scripts from the Windows Temp directory using common evasion flags (-NoProfile, -ExecutionPolicy Bypass, -WindowStyle Hidden). This pattern is consistent with loaders attempting to maintain persistence while obfuscating their execution context, specifically associated with steganographic malware campaigns.
Detects instances where the DonutLoader utility performs in-memory .NET payload execution. It identifies suspicious behavior by tracking the loading of clr.dll into a process that is not a recognized .NET host, concurrent with evidence of process hollowing techniques such as memory unmapping and process writing (NtUnmapViewOfSection, WriteProcessMemory, ResumeThread).
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