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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef
SHA3-384 hash: 883a92a02ed16765f8cd51ae820c7a81b30566c65d20ce4e39b6e888c02d68581b44e23c894dd27e9b4c405471745692
SHA1 hash: 13918a686506ad458a3bb9dcff6d2faaa005c254
MD5 hash: df559211c1e88f3046ee6321a3c5f653
humanhash: december-snake-wolfram-venus
File name:Update.vbs
Download: download sample
File size:7'967'364 bytes
First seen:2026-05-21 14:35:08 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:+bMNWbMNzEUG7IZ8KtVbMNmbMNpbMNYbMN1bMNXbMNMbMNRbMN0bMNWbMNcbMNBi:N
TLSH T12C864370F20B60436F588727FBA5BA112D0533A90B118B57016EDFF267079DFBA0E969
Magika vba
Reporter TomU
Tags:vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
42
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/67370/
Detection(s):
SecuriteInfo.com.KillAV-4.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0f24a698070a72bb9c7a6a
Tags:
n/a
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6a0f2211056ea44c45376b7e/reports/aa8823a1-c44d-42fd-847b-fb45481a1201/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef
Verdict:
Malicious
File Type:
text.utf8
First seen:
2026-05-21T13:25:00Z UTC
Last seen:
2026-05-21T13:33:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef/results?tab=lookup
Score:
93%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef/
Threat name:
Win32.Infostealer.Zeus
Create hunting rule
Status:
Malicious
First seen:
2026-05-21 15:53:53 UTC
File Type:
Text (VBS)
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uszqp7bwtf5qrono7psnk6ee5jjcirduswltfd3sm7zsshji73xq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260521-ryzcraas5s/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.60
Link:
https://yomi.yoroi.company/submissions/a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef

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:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
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.

Malspam

Visual Basic Script (vbs) vbs a4b307fc36997b08b9aefbe4d57884ea522444749597328f7267f3291d28feef

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/67370/

Comments