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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win32/Casdet!rfn
Classification:
Type:Trojan
Platform:Win32
Family:Casdet
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 Casdet

Summary:

Trojan:Win32/Casdet!rfn is a highly capable Windows 32-bit Trojan leveraging various system utilities like mshta, regsvr32, rundll32, BITS, and PowerShell for execution, persistence, and evasion. It exhibits advanced functionalities including API hooking for monitoring or manipulation, scheduled task creation, remote file operations, and data encoding, indicating a comprehensive and stealthy threat.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - !#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: 78ad7b62ff7e1e1411f1cb7e5fa343be3fe89a75a29e9b2848ba916df53ec5c6
78ad7b62ff7e1e1411f1cb7e5fa343be3fe89a75a29e9b2848ba916df53ec5c6
05/12/2025
→VirusTotal↓Download Sample
Filename: a2f8c96429914ff66662b432f9213a795856751290b5a510605212d5e6ee7638
a2f8c96429914ff66662b432f9213a795856751290b5a510605212d5e6ee7638
05/12/2025
→VirusTotal↓Download Sample
Filename: WindowsFormsApp3.exe
0180f4f29c550aa1ffaa21af51711b29de99fb1d7c932d008a0e9356ae8a7d60
11/11/2025
→VirusTotal↓Download Sample
Filename: cmd.exe
89c1d1b61d7f863f8a651726e29f2ae3de7958f36b49a756069021817947d06c
11/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system to prevent further compromise. Perform a full system scan with updated antivirus definitions, remove all detected malicious files, and meticulously check for and remove any persistence mechanisms such as scheduled tasks, startup entries, or modified system configurations. Ensure all operating system and application security patches are up to date and monitor network traffic for suspicious activity.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 11/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊