This hypothesis targets the presence of TTPpack, a known malware family often used for initial access or persistence, by identifying its specific code patterns within Azure Sentinel. Proactively hunting for this signature allows the SOC team to detect low-severity threats that may evade traditional behavioral detections, ensuring early identification of compromised workloads or endpoints before they escalate in impact.
rule TTPpack_additional: PEiD
{
strings:
$a = { E8 00 00 00 00 5D 81 ED F5 8F 40 00 60 33 F6 E8 11 00 00 00 8B 64 24 08 64 8F 05 }
condition:
$a at pe.entry_point
}This YARA rule can be deployed in the following contexts:
This rule contains 1 string patterns in its detection logic.
terraform plan or ansible-playbook execution generates temporary state files or logs that match the byte signature of the TTPpack_additional YARA rule.
C:\Jenkins\workspace\, /var/lib/jenkins/workspace/) or files with extensions .tfstate, .tfplan, or .log if the rule targets binary artifacts.Process Monitor or Wireshark to capture diagnostic data, and the resulting capture files (.pcap, .etl) contain embedded metadata or packet payloads that inadvertently match the TTPpack signature.
C:\Temp\, C:\Users\<Admin>\Desktop\) or specific file extensions like .pcap, .etl, and .cap when the parent process is Wireshark.exe, Process.exe, or logman.exe..pdb files or unoptimized .exe files) contain debug symbols or string literals that trigger the YARA rule.
.pdb extension or binaries located in build output directories (e.g., bin\Debug\, target\debug\) where the parent process is msbuild.exe, dotnet.exe, or cargo.exe.