user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Exploit:Win64/Sandsquarev!rfn
Exploit:Win64/Sandsquarev!rfn - Windows Defender threat signature analysis

Exploit:Win64/Sandsquarev!rfn - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Exploit:Win64/Sandsquarev!rfn
Classification:
Type:Exploit
Platform:Win64
Family:Sandsquarev
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: Exploit - Takes advantage of software vulnerabilities for 64-bit Windows platform, family Sandsquarev

Summary:

Exploit:Win64/Sandsquarev!rfn is a critical threat that gains execution on a system, likely through a browser exploit. It uses multiple native Windows tools ('Living off the Land' binaries like mshta, rundll32, and schtasks) to establish persistence, evade detection, and download additional malicious payloads.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - {0afaced1-e828-11d1-9187-b532f1e9575d}\ (PEHSTR_EXT)
 - \target.lnk (PEHSTR_EXT)
 - <html><body><script> (PEHSTR_EXT)
 - </script></body></html> (PEHSTR_EXT)
 - \Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe (PEHSTR_EXT)
 -  _neutral__8wekyb3d8bbwe\ (PEHSTR_EXT)
 - :\windows\win.ini (PEHSTR_EXT)
 - \settings\settings.dat (PEHSTR_EXT)
 - schtasks /change /TN " (PEHSTR_EXT)
 - " /RU  (PEHSTR_EXT)
 -  /RP  (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: cfa1277b223991f9713dc760d103219f.exe
95e4f2e823be17ac9131c2375cc70fde0ef0c7ea5acbee34e359d5094408284f
16/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
1. Isolate the affected machine from the network immediately to prevent lateral movement. 2. Ensure antivirus signatures are updated and perform a full system scan to remove all detected components. 3. Manually inspect and remove malicious Scheduled Tasks. 4. Due to the nature of the exploit, a full system re-image from a known-good backup is the most reliable method of remediation.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 16/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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