Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects execution of PowerShell commands that reflectively load a .NET assembly into memory using System.Reflection.Assembly::Load. The rule specifically flags behavior associated with the 'ROOTBOY' implant, which involves invoking the 'Extension.SubRoutine' class method 'Run2' and communicating with the C2 domain 'hellolargeworld.com'.
Detects the activity of the Prinz Eugen ransomware, specifically tracking the execution of 'servertool.exe' as it creates temporary files with the '.prinzeugen.tmp' extension and subsequently renames them to finalize file encryption.
Detects the creation of a local user account named 'admin' with the password 'germania' using the native 'net.exe' utility. This specific command pattern has been associated with pre-ransomware activity during the 'Prinz Eugen' campaign to establish persistence and unauthorized administrative access.
Detects instances of the MYRA RAT process masquerading as the systemd-userdbd daemon. The detection identifies the malicious payload being executed from the /usr/lib/systemd/systemd-userdbd path with command-line arguments typically used by the legitimate system utility, indicating that the Node.js binary has been replaced or copied to evade detection.
Detects phishing emails leveraging Telephone-Oriented Attack Delivery (TOAD). These emails impersonate Scotiabank and use urgent themes regarding unauthorized $3,000 Interac e-Transfers to lure victims into calling an attacker-controlled toll-free number. The rule monitors for specific email subjects and attachments masquerading as voicemail audio files (v-mail*.mp3.eml or v-mail*.html).
Detects the execution of 'sudo npm install -g apintergrationpost', a known command pattern utilized by the MYRA RAT. This pattern leverages sudo for elevated privilege installation via a malicious npm package hook, facilitating potential privilege escalation.
Detects the use of screen capture utilities such as ffmpeg, grim, scrot, or xwd, which are often used by the MYRA RAT to capture live desktop sessions for exfiltration.
Detects the in-memory execution of the MYRA RAT on Linux systems. The rule identifies suspicious process activity where a process masquerades as the legitimate 'systemd-userdbd' service, while utilizing memfd_create or related file descriptor paths (e.g., /proc/self/fd/ or /memfd:) to load and execute malicious code directly from memory, thereby avoiding traditional file-based detection.
This rule detects suspicious activities related to AWS S3 buckets that could indicate a bucket hijacking attempt or unauthorized replication to an external account. Specifically, it looks for two scenarios: 1) an S3 bucket being deleted and then recreated by a different AWS account within a one-hour window, suggesting a namespace hijacking, or 2) an S3 bucket being deleted while a PutBucketReplication event references an external AWS account, indicating an attempt to exfiltrate data or maintain access through replication.
Detects network beaconing activity associated with the MYRA RAT. The rule identifies TCP connections to the hardcoded C2 IP address 192.168.54.1 on port 4444, where multiple connections are observed from the same host over a 10-minute window, suggesting automated heartbeat/beaconing behavior.
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