user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Ransom:Win32/Lockbit.AK!ibt
Ransom:Win32/Lockbit.AK!ibt - Windows Defender threat signature analysis

Ransom:Win32/Lockbit.AK!ibt - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Ransom:Win32/Lockbit.AK!ibt
Classification:
Type:Ransom
Platform:Win32
Family:Lockbit
Detection Type:Concrete
Known malware family with identified signatures
Variant:AK
Specific signature variant within the malware family
Suffix:!ibt
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Ransomware - Encrypts files and demands payment for 32-bit Windows platform, family Lockbit

Summary:

This is a concrete detection for a variant of the Lockbit ransomware, a highly destructive malware family. The threat is designed to encrypt files on the compromised system and demand a ransom payment for their recovery. The detection is based on specific code signatures, indicating a very low risk of a false positive.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Ransom_Win32_Lockbit_AK_2147897364_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Ransom:Win32/Lockbit.AK!ibt"
        threat_id = "2147897364"
        type = "Ransom"
        platform = "Win32: Windows 32-bit platform"
        family = "Lockbit"
        severity = "Critical"
        info = "ibt: an internal category used to refer to some threats"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "2"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {8d 40 10 64 8b 00 8b 40 0c 8d 48 0c 89 4d f8 8b 48 0c 8b 59 18 33 c0 40 c1 e0 05 8d 40 1d 8b 44 03 ff 8d 04 03 8b 50 78 85 d2}  //weight: 1, accuracy: High
        $x_1_2 = {6a 00 6a 00 6a 00 6a 00 6a 00 68 02 10 04 00 ff d0 8b f0 85 f6 0f 84 7c 01 00 00 8b 40 40 c1 e8 1c}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: test_nopass.exe
64c924b671ac30fb16981fe3473e6241f41bb8ddd39d342d279f2c5ecba65fc2
06/12/2025
→VirusTotal↓Download Sample
f3ab6da562932f424ad771d445572adc91b8ba1fc7d0f7644b268423cce9696a
22/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected system from the network to prevent lateral movement. Use your security software to remove the detected threat. Restore any encrypted files from a known-good, offline backup and do not pay the ransom.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 22/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊