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

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

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

Summary:

Trojan:Win32/ShellCodeRunner!rfn is a sophisticated Trojan designed to execute malicious shellcode on a compromised system. It utilizes decoding (hex, base64) and decryption (AES) to obfuscate and deobfuscate its payload, while employing anti-analysis techniques like hiding its console window and performing environmental checks to evade detection and analysis. This threat aims to run arbitrary code, potentially leading to further compromise.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - Executing shellcode (PEHSTR_EXT)
 - Shellcode execution complete (PEHSTR_EXT)
 - RVirus.pdb (PEHSTR_EXT)
 - .win Tools.exe (PEHSTR_EXT)
 - .msvcp120.dll (PEHSTR_EXT)
 - .msvcr120.dll (PEHSTR_EXT)
 - .w10.rar (PEHSTR_EXT)
 - .w7.rar (PEHSTR_EXT)
 - encoding/hex.DecodeString (PEHSTR_EXT)
 - encoding/base64.(*Encoding).Decode (PEHSTR_EXT)
 - Spotifys.exe (PEHSTR_EXT)
 - Langfang Alkem Material Technology Co., Ltd.0 (PEHSTR_EXT)
 - main.PEB (PEHSTR_EXT)
 - main.IMAGE_DOS_HEADER (PEHSTR_EXT)
 - main.IMAGE_FILE_HEADER (PEHSTR_EXT)
 - main.IMAGE_OPTIONAL_HEADER32 (PEHSTR_EXT)
 - main.IMAGE_OPTIONAL_HEADER64 (PEHSTR_EXT)
 - main.PROCESS_BASIC_INFORMATION (PEHSTR_EXT)
 - main.AesDecrypt (PEHSTR_EXT)
 - main.HexStrToBytes (PEHSTR_EXT)
 - main.isNonChinese (PEHSTR_EXT)
 - main.isNonChinese.deferwrap1 (PEHSTR_EXT)
 - main.isPythonInCDrive (PEHSTR_EXT)
 - main.main (PEHSTR_EXT)
 - main.isCPULow (PEHSTR_EXT)
 - main.HideConsoleWindow (PEHSTR_EXT)
 - main.HexParseKey (PEHSTR_EXT)
 - /ShellCode/ShellCode (PEHSTR_EXT)
 - LazyDLL (PEHSTR_EXT)
 - \maldev\!code-section\!Shellcode\Shellcode-test\x64\Release\Shellcode-test.pdb (PEHSTR_EXT)
 - \maldev\!code-section\!Shellcode\Shellcode-obfuscated\x64\Release\Shellcode-obfuscated.pdb (PEHSTR_EXT)
 - \maldev\code-section\fud-cmd\x64\Release\fud-cmd.pdb (PEHSTR_EXT)
 - \maldev\!code-section\fud-cmd\x64\Release\fud-cmd.pdb (PEHSTR_EXT)
 - curl_easy_perform cannot be executed if the CURL handle is used in a MultiPerform. (PEHSTR_EXT)
 - https:// (PEHSTR_EXT)
 - Ws2_32.dH (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: 19cd01122d9c9162a3780beb3bae3217
6671046420956036fa3864b4fe5c85fb90be5b734eb76e01bf78d2aa7432ee06
19/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network. Perform a full system scan with updated antivirus/EDR and remove all detected threats. Investigate for persistence mechanisms, lateral movement, and the ultimate payload executed by the shellcode; consider re-imaging the system if the extent of compromise is unclear.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 19/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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