user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:Win32/Msposer!rfn
Trojan:Win32/Msposer!rfn - Windows Defender threat signature analysis

Trojan:Win32/Msposer!rfn - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win32/Msposer!rfn
Classification:
Type:Trojan
Platform:Win32
Family:Msposer
Detection Type:Concrete
Known malware family with identified signatures
Suffix:!rfn
Specific ransomware family name
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Trojan - Appears legitimate but performs malicious actions for 32-bit Windows platform, family Msposer

Summary:

This is a concrete detection of Trojan:Win32/Msposer!rfn, a sophisticated Trojan designed to compromise systems. It leverages Windows utilities like mshta, regsvr32, rundll32, PowerShell, and BITSJobs for execution, persistence, process hooking, and establishes communication with remote domains such as cnzz.com and huifeidezhu.com for command and control or data exfiltration.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - \Temporary Projects\Chrome\obj\x86\Debug\Chrome.pdb (PEHSTR_EXT)
 - //s14.cnzz.com/stat.php?id=4730427&web_id=4730427 (PEHSTR_EXT)
 - /stat/game.php?type= (PEHSTR_EXT)
 - www.huifeidezhu.com (PEHSTR_EXT)
 - \ext\settings\{11f09afe-75ad-4e52-ab43-e09e9351ce17} (PEHSTR_EXT)
 - !#HSTR:StringCodeForMshta.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.C!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.D!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.L!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.O!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRegsvr32.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRundll32.A!pli (PEHSTR_EXT)
 - rundll32 (PEHSTR_EXT)
 - !#HSTR:StringCodeForBITSJobs.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForPowerShell.G!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForScheduledTask.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForDataEncoding.D!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.J!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.K!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteFileCopy.B!pli (PEHSTR_EXT)
 - !#HSTR:ExecutionGuardrails (PEHSTR_EXT)
 - !#HSTR:StringCodeForFileDeletion.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.M!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForNetshHelperDLL.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteServices.A!pli (PEHSTR_EXT)
Known malware which is associated with this threat:
Filename: microsofthelp.exe
cb96e017cf51e48f24af1b8883ebb84b5c5a7619fcde9ac2bcc2e3f31b0afa5f
07/12/2025
→VirusTotal↓Download Sample
Filename: microsoft.exe
52f792fed8702ecd94a43f792804fada6e5ce328e5feef859a98a71ef1e59286
07/12/2025
→VirusTotal↓Download Sample
Filename: d7d7fb8.exe
0f47be922777d7d7fb8e6ce5076deb4a4ca03f28b9f80e74adc6f50d4e23e1d7
07/12/2025
→VirusTotal↓Download Sample
Filename: 58q7e3.exe
f5c091430ce76194de873767293b519c5635842b9f93d02d51038ce43787d8db
07/12/2025
→VirusTotal↓Download Sample
Filename: 9ma7ur2tj.exe
613c7fe0d1c5cd63ef216aa976b95c0f682e3244e14d048666e3b6e106816890
07/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected system, perform a full antivirus scan to remove the Trojan and all associated components. Investigate for persistence mechanisms (e.g., scheduled tasks, modified registry entries) and potential data exfiltration. Reset all user and administrative credentials on the compromised system.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 07/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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