Concrete signature match: Trojan - Appears legitimate but performs malicious actions for 32-bit Windows platform, family Khalesi
Trojan:Win32/Khalesi.RL!MTB is a malicious program from the Khalesi family targeting Windows 32-bit systems. Detected through machine learning behavioral analysis and specific low-accuracy heuristic byte patterns, it aims to perform unauthorized actions or compromise system integrity.
No specific strings found for this threat
rule Trojan_Win32_Khalesi_RL_2147773162_0
{
meta:
author = "threatcheck.sh"
detection_name = "Trojan:Win32/Khalesi.RL!MTB"
threat_id = "2147773162"
type = "Trojan"
platform = "Win32: Windows 32-bit platform"
family = "Khalesi"
severity = "Critical"
info = "MTB: Microsoft Threat Behavior"
signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
threshold = "2"
strings_accuracy = "Low"
strings:
$x_1_1 = {0f be 02 83 c8 20 0f b6 c8 33 4d ?? 89 4d ?? 8b 55 ?? 83 c2 01 89 55} //weight: 1, accuracy: Low
$x_1_2 = {83 c4 04 8b 4d ?? 83 e1 01 8b 15 ?? ?? ?? ?? 0f af 8a ?? ?? ?? ?? 33 c1 89 45 ?? eb} //weight: 1, accuracy: Low
condition:
(filesize < 20MB) and
(all of ($x*))
}043e5ce96ba3a291188f9c379469dcac5f6c27528e1a5e608163927538a470bdc26b8d2f13c36520dbbb94e94179a857aeca893ab1f73bdcdb770fe84d502f457473dda3ffcfe2e31ac6eb5890d03a57acee056cb574231b4313058608a45da6df467545dcaf4894501a15ff101c33b74c0748a6245735ee46a4ce851058f1f1aae718316a1a954ed097395658365b32daed2f8ee1a8aad440317b943201170aIsolate the affected system immediately to prevent further spread. Conduct a full scan with up-to-date antivirus software to remove all detected malicious files. Ensure the operating system and all installed software are fully patched to mitigate potential vulnerabilities.