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: mpclient.dll
872d8079ab450bfd1417b9128b619f7e9b43291dc7391044dd838f5b7e8dde52
23/07/2026
→VirusTotal↓Download Sample
3878dd5c8eba1e5b53ab2e07e7b5482e95a3fd3e98268bcd7861318bc9902376
17/07/2026
→VirusTotal↓Download Sample
Filename: 158xp5u9e
dc4f25b2247cfdd6fc96848db30a178baa4419a4c854e86e315b465836102d14
16/07/2026
→VirusTotal↓Download Sample
Filename: 1glx5bv
425bf771c8c9f740b1ae9803dcb4fd45af4d6a6f171fcc72fc7d511095ca82ce
16/07/2026
→VirusTotal↓Download Sample
Filename: ifbqzheym
ac8eae94d27122f4751bc96d9ea52d30000b7ca37569a2291b2710824ca3396f
16/07/2026
→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:~$ ▊