user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat VirTool:Win32/DelfInject.gen!AU
VirTool:Win32/DelfInject.gen!AU - Windows Defender threat signature analysis

VirTool:Win32/DelfInject.gen!AU - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: VirTool:Win32/DelfInject.gen!AU
Classification:
Detection Type:Unknown
Suffix:!AU
Confidence:Medium
False-Positive Risk:Low
Summary:

VirTool:Win32/DelfInject.gen!AU is a generic detection for a malicious tool that employs code injection techniques. It demonstrates anti-analysis, anti-debugging, and anti-sandboxing capabilities, along with indicators of injecting malicious DLLs like 'SMGCatcher.dll', executing scripts via Mshta, and performing API hooking for covert operations.

Severity:
Medium
VDM Static Detection:
Relevant strings associated with this threat:
 - RtlDecompressBuffer (PEHSTR_EXT)
 - /s "C:\SMGCatcher.dll" (PEHSTR_EXT)
 - uu\yr (PEHSTR_EXT)
 - .exe (PEHSTR_EXT)
 - Please visit www.vaysoft.com to get more detail (PEHSTR_EXT)
 - .smsactivator.com/ (PEHSTR_EXT)
 - This program is maDe by dtcser.thank (PEHSTR_EXT)
 - \\.\NTICE (PEHSTR_EXT)
 - Undetector 1.1 (PEHSTR_EXT)
 - gdi32.dll (PEHSTR_EXT)
 - user32.dll (PEHSTR_EXT)
 - TWelcomeForm (PEHSTR_EXT)
 - drivers\vmxnet.sys (PEHSTR_EXT)
 - C:\Program Files\Parallels\Parallels Tools (PEHSTR_EXT)
 - SbieDll.dll (PEHSTR_EXT)
 - Softplan\Componentes\MRU (PEHSTR_EXT)
 - \FIBC_Software\ (PEHSTR_EXT)
 - \wPDF\Source\WPGenDC.pas (PEHSTR_EXT)
 - lld.23lenrek (PEHSTR)
 - .0-9 by SWiM (PEHSTR_EXT)
 - \IMI Warehouse\ (PEHSTR_EXT)
 - g?_smkgksv_w}vwai61Xwdnth`\5*`{a (PEHSTR_EXT)
 - iperf v. (PEHSTR_EXT)
 - \gdm\delphi\math\ (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:StringCodeForFileDeletion.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.M!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForNetshHelperDLL.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteServices.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForSoftwarePacking.C!pli (PEHSTR_EXT)
YARA Rule:
rule VirTool_Win32_DelfInject_AU_2147625858_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "VirTool:Win32/DelfInject.gen!AU"
        threat_id = "2147625858"
        type = "VirTool"
        platform = "Win32: Windows 32-bit platform"
        family = "DelfInject"
        severity = "Critical"
        info = "gen: malware that is detected using a generic signature"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "2"
        strings_accuracy = "Low"
    strings:
        $x_1_1 = {ff d0 85 c0 74 31 8b 45 ?? 8b 50 28 8b 45 ?? e8 ?? ?? ff ff 89 85 ?? ff ff ff}  //weight: 1, accuracy: Low
        $x_1_2 = {32 c1 8b 4d f8 8b 7d e4 0f b6 4c 39 ff 03 c9 c1 e9 02 32 c1 32 d0 88 55 ef}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: virussign.com_af064499da08c11936e3c1d66acae650
227e8678d85bff501bb909e0d61ee25554bf99c94e47c0194da53e7c246687f9
22/03/2026
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected system, perform a comprehensive scan with updated antivirus software, remove all detected malicious files and associated persistence mechanisms. Additionally, review system logs for unusual activity and ensure all operating system and software patches are applied.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 22/03/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊