MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cca8da99cc7f736fd140ca8c52a82d00d9587def174d4385302f8cc4bccfcce0. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cca8da99cc7f736fd140ca8c52a82d00d9587def174d4385302f8cc4bccfcce0
SHA3-384 hash: 7fd9a3f990c83c44a578fd012290c05db97c2471615fd25068bf93f47f75fc285d276af7670de734783ee2fa29e643d4
SHA1 hash: d35aab4a963582470ed724000c3126c65abcfd77
MD5 hash: a3533d5d7aa6b072eebb79e4409672ee
humanhash: mexico-ack-mobile-arizona
File name:biên lai.vbs
Download: download sample
Signature Formbook
Create hunting rule
File size:59'449'704 bytes
First seen:2025-04-09 06:42:29 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 192:LluyjjeZvsBef7e3vtEMUETN9Bg8cXqJV9udLnLfhL13Z:/Qb7SOE9M0Vy
Threatray 4 similar samples on MalwareBazaar
TLSH T157D72B713BF88216FAF32F661472A1642E7D3EC76CB6979C01945889CCA6E10D8717B3
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika mp3
Reporter abuse_ch
Tags:FormBook vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f61e0971beff15dccd9b75
Tags:
autorun shell virus sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/67f6170540adfb5162bd15c6/reports/e1212281-baff-430d-8ace-56c5ec1aa851/overview
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1660420
Signature
Bypasses PowerShell execution policy
Connects to a pastebin service (likely for C&C)
Encrypted powershell cmdline option found
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Paste sharing url in reverse order
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1660420 Sample: bi#U00ean lai.vbs Startdate: 09/04/2025 Architecture: WINDOWS Score: 100 36 pastebin.com 2->36 38 paste.ee 2->38 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 Sigma detected: Paste sharing url in reverse order 2->50 54 7 other signatures 2->54 9 wscript.exe 1 2->9         started        12 svchost.exe 1 1 2->12         started        signatures3 52 Connects to a pastebin service (likely for C&C) 38->52 process4 dnsIp5 56 Suspicious powershell command line found 9->56 58 Wscript starts Powershell (via cmd or directly) 9->58 60 Uses schtasks.exe or at.exe to add and modify task schedules 9->60 62 2 other signatures 9->62 15 powershell.exe 7 9->15         started        18 schtasks.exe 1 9->18         started        20 schtasks.exe 1 9->20         started        44 127.0.0.1 unknown unknown 12->44 signatures6 process7 signatures8 64 Suspicious powershell command line found 15->64 66 Encrypted powershell cmdline option found 15->66 68 Bypasses PowerShell execution policy 15->68 70 Found suspicious powershell code related to unpacking or dynamic code loading 15->70 22 powershell.exe 14 18 15->22         started        26 conhost.exe 15->26         started        28 conhost.exe 18->28         started        30 conhost.exe 20->30         started        process9 dnsIp10 40 paste.ee 23.186.113.60, 443, 49682 KLAYER-GLOBALNL Reserved 22->40 42 pastebin.com 104.22.68.199, 443, 49681 CLOUDFLARENETUS United States 22->42 34 C:\Users\user\AppData\Local\Temp\dll03.ps1, Unicode 22->34 dropped 32 powershell.exe 11 22->32         started        file11 process12
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/cca8da99cc7f736fd140ca8c52a82d00d9587def174d4385302f8cc4bccfcce0
Gathering data
Threat name:
Script-WScript.Trojan.QuasarRAT
Create hunting rule
Status:
Malicious
First seen:
2025-04-09 06:43:19 UTC
File Type:
Text (VBS)
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zsunvgomp5zw7ukazkgffkbnadmvq7ppc5guhbjqf6gmjpgpztqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
17dd3793d4bbf9e90e53df26678489a7b82e65d1eeecf396eb088b444a164f85
Formbook
2be211f45f8595e6e9b55ba227173aed35eb1ce53fb119beceb49f236232814d
Formbook
acae2eb792f7d641ffa6b0fb92e885db935307ba0dba00afe113b78a9c1d267f
Formbook
error
Formbook
fd0da5a488e7d4bf274e63bc23f649a200e234fdfa75a2fa2b77c5db334b8f1c
Formbook
Result
Malware family:
n/a
Score:
  10/10
Tags:
execution
Link:
https://tria.ge/reports/250409-hg11ksstcz/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Drops startup file
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://pastebin.com/raw/pzXGkayU
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cca8da99cc7f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

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