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

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

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

Summary:

Trojan:Win32/Tiggre!rfn is a sophisticated Windows Trojan leveraging multiple legitimate binaries (LOLBINs) such as mshta, rundll32, and regsvr32 for execution and persistence. It employs API hooking, data encoding, and scheduled tasks to maintain stealth and control, enabling activities like remote file operations, PowerShell command execution, and potential data exfiltration.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - vD\&s (SNID)
 - oqcazu737w7m.dll (PEHSTR_EXT)
 - gfJs (SNID)
 - !#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: Photoshop6.0 单文件版.exe
d49ec81f7be6eaabac6d77e8bc43a8ec61d368af5caa75690b95c18a6d52bcf7
25/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network. Perform a full system scan with updated antivirus software to remove the Trojan and all associated artifacts. Thoroughly investigate for persistence mechanisms (e.g., scheduled tasks, registry entries), signs of lateral movement, and potential data exfiltration.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 25/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊