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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Threat unknown


Vendor detections: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6
SHA3-384 hash: c43aae3fa8171fb64797593af4c894aacdd43791e276c902db6e54654ee8edfe026bf9e20080ddea5bdee26fda42a3c0
SHA1 hash: c81591d0900767d216bd7da345a149518aa68627
MD5 hash: b587dd8429e925768e44849da7af805c
humanhash: sad-idaho-wolfram-snake
File name:WinUpdate.ps1
Download: download sample
File size:2'036 bytes
First seen:2026-05-24 21:32:22 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 48:M6MNBPLHMP2QoPw3c22oYEU46C2ISZlHa0YBYCRigdJ0Qe1P3dk:M6MPLHMP2Qo4zl2ISba7BfYgdJ0dPNk
TLSH T1E841F66539893937CB0825B822F0CC96822A23BA37183FBD4D51CEDD2BE31D10567AE4
Magika powershell
Reporter smica83
Tags:ps1

Intelligence

File Origin
# of uploads :
1
# of downloads :
165
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Heur.BZC.PZQ.Boxter.1133.8DBFB7F2.20297.12744.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a136e9f5d76862ef94780f8
Tags:
ransomware shellcode vmdetect
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 obfuscated opendir
Link:
https://www.filescan.io/uploads/6a136e9b861ee596e649fd1d/reports/87c072c4-8102-4847-a861-f742dc8b151f/overview
Verdict:
Malicious
Labled as:
BZC.PZQ.Boxter.1133
Link:
https://www.hybrid-analysis.com/sample/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6
Verdict:
Malicious
File Type:
unix shell
First seen:
2026-05-24T01:19:00Z UTC
Last seen:
2026-05-26T05:08:00Z UTC
Hits:
~100
Detections:
HackTool.PowerShell.AmsiBypass.sb Trojan.PowerShell.AmsiBypass.sb
Link:
https://opentip.kaspersky.com/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1918069
Signature
AI detected malicious Powershell script
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Powershell drops PE file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6
Verdict:
Malware
YARA:
1 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated PowerShell
Link:
https://app.malva.re/file/b587dd8429e925768e44849da7af805c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6/
Verdict:
Malicious
Threat:
HackTool.PowerShell.AmsiBypass
Link:
https://tip.neiki.dev/file/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6
Threat name:
Script-PowerShell.Packed.Boxter
Create hunting rule
Status:
Malicious
First seen:
2026-05-24 04:26:56 UTC
File Type:
Text
AV detection:
8 of 24 (33.33%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ws6rg6zianujzjlc2zx44cr542gtm5xndaq5mnso2kk33fwbt23a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
execution
Link:
https://tria.ge/reports/260524-1ea1gsbt5x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Command and Scripting Interpreter: PowerShell
Contacts third-party web service commonly abused for C2
Badlisted process makes network request
Malware Config
Dropper Extraction:
https://discord.com/api/webhooks/1505276877214847067/v4AWiiLhBWwcL7P_uCjpFfBo122JWqI6_54pYtphp86YRt_ABvMSJOzPxj0vkqlEMte5
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/b4bd137b2803689ca562d66fce0a3de68d3676ed1821d6364ed295bd96c19eb6

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:SUSP_PowerShell_Base64_Decode
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects PowerShell code to decode Base64 data. This can yield many FP
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments