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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4. 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


Formbook


Vendor detections: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4
SHA3-384 hash: b8ec0e343df99fe1c51966d6e87c32ced63851ffd360eb44078aac9a511ac363d1f4fcd4d1d453f14dc8c07a502e9e1a
SHA1 hash: f66c792f4f42ee9e186f067fe48f557a3dcb63e3
MD5 hash: e5526e1c62261081164cf81dbf5928eb
humanhash: october-zulu-freddie-sink
File name:ProformaInvoice-5628-1.vbs
Download: download sample
Signature Formbook
Create hunting rule
File size:1'914'800 bytes
First seen:2026-06-23 13:31:39 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/csv
ssdeep 192:/NCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCJ:meKtP1z6EODzMO0+qfGlkcXBjoj
TLSH T1B0956D214A2BAC82F2352E4101F96BE4CBD8ADF19B5F51CB80C95FE678E1D35609F5E0
Magika txt
Reporter lowmal3
Tags:FormBook vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/71721/
Detection(s):
SecuriteInfo.com.VBS.Starter.539.27244.31325.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a3a8af486bc95245bf8e99c
Tags:
agenttesla asyncrat autorun
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated
Link:
https://www.filescan.io/uploads/6a3a8aef90632a45f73605bf/reports/a92d820a-b506-475b-9d20-6a7949963ab5/overview
Verdict:
Malicious
Labled as:
AsyncRAT
Link:
https://www.hybrid-analysis.com/sample/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4
Verdict:
Malicious
File Type:
text.utf8
First seen:
2026-06-23T10:13:00Z UTC
Last seen:
2026-06-25T07:36:00Z UTC
Hits:
~100
Detections:
Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic
Link:
https://opentip.kaspersky.com/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1932613
Signature
Antivirus detection for URL or domain
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates processes via WMI
Drops VBS files to the startup folder
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Copy file to startup via Powershell
Sigma detected: Drops script at startup location
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected FormBook
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1932613 Sample: ProformaInvoice-5628-1.vbs Startdate: 23/06/2026 Architecture: WINDOWS Score: 100 60 www.rnlforce.com 2->60 62 www.opnfield.info 2->62 64 9 other IPs or domains 2->64 78 Suricata IDS alerts for network traffic 2->78 80 Malicious sample detected (through community Yara rule) 2->80 82 Antivirus detection for URL or domain 2->82 84 13 other signatures 2->84 11 powershell.exe 14 15 2->11         started        15 wscript.exe 1 2->15         started        17 wscript.exe 1 2->17         started        19 svchost.exe 1 1 2->19         started        signatures3 process4 dnsIp5 66 brenmayasociados.com 50.87.145.2, 443, 49683, 49686 ORACLE-BMC-31898-OracleCorporationUS United States 11->66 106 Writes to foreign memory regions 11->106 108 Injects a PE file into a foreign processes 11->108 21 CasPol.exe 11->21         started        24 CasPol.exe 11->24         started        26 conhost.exe 11->26         started        110 Suspicious powershell command line found 15->110 112 Wscript starts Powershell (via cmd or directly) 15->112 114 Windows Scripting host queries suspicious COM object (likely to drop second stage) 15->114 116 3 other signatures 15->116 28 powershell.exe 13 15->28         started        31 powershell.exe 15 17->31         started        68 127.0.0.1 unknown unknown 19->68 signatures6 process7 file8 86 Maps a DLL or memory area into another process 21->86 33 RxUnaUHIaI.exe 21->33 injected 88 Unusual module load detection (module proxying) 24->88 56 ProformaInvoice-56...vbs:Zone.Identifier, ASCII 28->56 dropped 58 C:\Users\user\...\ProformaInvoice-5628-1.vbs, CSV 28->58 dropped 90 Drops VBS files to the startup folder 28->90 92 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 28->92 36 conhost.exe 28->36         started        94 Writes to foreign memory regions 31->94 96 Injects a PE file into a foreign processes 31->96 38 conhost.exe 31->38         started        40 CasPol.exe 31->40         started        signatures9 process10 signatures11 76 Maps a DLL or memory area into another process 33->76 42 comp.exe 13 33->42         started        45 psr.exe 33->45         started        process12 signatures13 98 Tries to steal Mail credentials (via file / registry access) 42->98 100 Tries to harvest and steal browser information (history, passwords, etc) 42->100 102 Modifies the context of a thread in another process (thread injection) 42->102 104 4 other signatures 42->104 47 FWlGNf6M.exe 42->47 injected 50 chrome.exe 42->50         started        52 firefox.exe 42->52         started        process14 dnsIp15 70 www.onyudental.co.kr 218.38.12.152, 49699, 80 SKB-ASSKBroadbandCoLtdKR South Korea 47->70 72 www.opnfield.info 159.198.40.140, 49721, 80 NAMECHEAP-NET-NamecheapIncUS United States 47->72 74 5 other IPs or domains 47->74 54 WerFault.exe 4 50->54         started        process16
Score:
42%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4/
Verdict:
Malicious
Threat:
Trojan.VBS.SAgent
Link:
https://tip.neiki.dev/file/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4
Threat name:
Script-WScript.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-06-23 13:13:04 UTC
File Type:
Binary
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2ngufkrtv2hmijas7xysgneuizqfdz73yiogpw4jt4chf4g7ntsa._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
execution
Link:
https://tria.ge/reports/260623-qs772ac19r/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d34d42aa33ae/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4

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

Formbook

Visual Basic Script (vbs) vbs d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/71721/

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