Concrete signature match: Trojan - Appears legitimate but performs malicious actions for 32-bit Windows platform, family Amadey
Trojan:Win32/Amadey.PAA!MTB is a concrete detection of the Amadey Trojan, a sophisticated malware family known for its capabilities as a botnet loader, information stealer, and backdoor. This specific variant leverages machine learning behavioral analysis to steal sensitive data, download additional malicious payloads, and establish remote control over compromised systems, posing a severe threat to data confidentiality and system integrity.
Relevant strings associated with this threat: - jmXjsf (PEHSTR_EXT)
rule Trojan_Win32_Amadey_PAA_2147836969_0
{
meta:
author = "threatcheck.sh"
detection_name = "Trojan:Win32/Amadey.PAA!MTB"
threat_id = "2147836969"
type = "Trojan"
platform = "Win32: Windows 32-bit platform"
family = "Amadey"
severity = "Critical"
info = "MTB: Microsoft Threat Behavior"
signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
threshold = "1"
strings_accuracy = "Low"
strings:
$x_1_1 = {6a 6d 58 6a 73 66 a3 ?? ?? ?? ?? 58 6a 33 66 a3 ?? ?? ?? ?? 58 6a 67 66 a3 ?? ?? ?? ?? 33 c0 66 a3 ?? ?? ?? ?? 58 6a 64 66 a3 ?? ?? ?? ?? 58 6a 6d 66 a3 ?? ?? ?? ?? 58 6a 6c 66 a3 ?? ?? ?? ?? 58 6a 2e 66 a3 ?? ?? ?? ?? 58 6a 6c 66 a3 ?? ?? ?? ?? 58 6a 32 66 a3 ?? ?? ?? ?? 58 6a 69 66 a3} //weight: 1, accuracy: Low
condition:
(filesize < 20MB) and
(all of ($x*))
}719f762fbc61df4c651dd30e07831c5aee2c7a8b8dac7dbb2ad61d040eeaa79bImmediately isolate the affected endpoint to prevent lateral movement and further compromise. Perform a full system scan with updated antivirus software, preferably in safe mode, to remove all detected threats and associated artifacts. Additionally, review network logs for suspicious activity, enforce strong security policies, and consider re-imaging the compromised system for complete eradication.