🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d. 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: 13


Intelligence 13 IOCs YARA 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d
SHA3-384 hash: d4c35a89dadc756e25adf937a174f58c01a40b9a993efb419a3e208d330a3d2ccdbc5d4d4989ec39bff3361dfc6a644b
SHA1 hash: 7236617cb99df66996b84f817e49ae659c62e510
MD5 hash: 9536b8552a2559e9426ce9b342d63bae
humanhash: oregon-potato-foxtrot-mirror
File name:Quotation#26108-265789.pdf.vbs
Download: download sample
Signature Formbook
Create hunting rule
File size:1'145'285 bytes
First seen:2026-10-08 19:27:56 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:DzoDbQS9wFms6EPsFMBJtfCqaKcb81IQA4VoGp:nyQxFmQPnzupA
TLSH T14F35E0516E9C3B76DFE81A0C91FE1E0E43F0624A1815304EFB56AF4B9EB7684450F1EA
Magika vba
Reporter abuse_ch
Tags:FormBook vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
122
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/91163/
Detection(s):
SecuriteInfo.com.VBS.DownLoader.4667.13364.22788.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad07dea6f551121ba15d48b
Tags:
vmdetect dropper virus sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dropper masquerade obfuscated packed
Link:
https://www.filescan.io/uploads/6ac7eed23d78470602daa443/reports/05bcbb51-5af8-4831-9c7c-1bfedcef4da1/overview
Verdict:
Malicious
Labled as:
Trojan/VBS.Agent
Link:
https://www.hybrid-analysis.com/sample/99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d
Verdict:
Malicious
File Type:
vbs
First seen:
2026-10-08T11:37:00Z UTC
Last seen:
2026-10-10T01:39:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1984470
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
Found direct / indirect Syscall (likely to bypass EDR)
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 dropped file
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Queues an APC in another process (thread injection)
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suricata IDS alerts for network traffic
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)
Uses an obfuscated file name to hide its real file extension (double extension)
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Windows Shell Script Host drops VBS files
WScript reads language and country specific registry keys (likely country aware script)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1984470 Sample: Quotation#26108-265789.pdf.vbs Startdate: 08/10/2026 Architecture: WINDOWS Score: 100 53 www.nutnuty.info 2->53 55 www.mmmklflv.org 2->55 57 6 other IPs or domains 2->57 73 Suricata IDS alerts for network traffic 2->73 75 Antivirus detection for dropped file 2->75 77 Antivirus / Scanner detection for submitted sample 2->77 79 8 other signatures 2->79 10 wscript.exe 3 2 2->10         started        14 23VdoVxs7.exe 2->14 injected 16 ABqTk3daZyR5.exe 2->16 injected signatures3 process4 dnsIp5 45 C:\Users\user\AppData\...\FeSerYeqLFDL.vbs, ASCII 10->45 dropped 93 Benign windows process drops PE files 10->93 95 VBScript performs obfuscated calls to suspicious functions 10->95 97 Potential malicious VBS script found (has network functionality) 10->97 103 3 other signatures 10->103 19 wscript.exe 2 3 10->19         started        99 Maps a DLL or memory area into another process 14->99 101 Found direct / indirect Syscall (likely to bypass EDR) 14->101 23 cttune.exe 13 14->23         started        47 hahashoe.com 91.184.0.200, 49743, 49744, 49745 ONECOMDK Netherlands 16->47 49 www.nutnuty.info 159.198.70.130, 49751, 49752, 49753 NAMECHEAP-NET-NamecheapIncUS United States 16->49 51 6 other IPs or domains 16->51 file6 signatures7 process8 file9 41 C:\Users\user\AppData\Local\Temp\adobe.js, ASCII 19->41 dropped 81 WScript reads language and country specific registry keys (likely country aware script) 19->81 25 wscript.exe 1 2 19->25         started        29 Acrobat.exe 55 19->29         started        83 Tries to steal Mail credentials (via file / registry access) 23->83 85 Tries to harvest and steal browser information (history, passwords, etc) 23->85 87 Modifies the context of a thread in another process (thread injection) 23->87 89 3 other signatures 23->89 31 firefox.exe 23->31         started        signatures10 process11 file12 43 C:\Users\user\AppData\Local\Temp\word.exe, PE32 25->43 dropped 91 WScript reads language and country specific registry keys (likely country aware script) 25->91 33 word.exe 25->33         started        36 AcroCEF.exe 92 29->36         started        signatures13 process14 signatures15 65 Antivirus detection for dropped file 33->65 67 Multi AV Scanner detection for dropped file 33->67 69 Modifies the context of a thread in another process (thread injection) 33->69 71 5 other signatures 33->71 38 AcroCEF.exe 6 36->38         started        process16 dnsIp17 59 www.roamago.com 38->59 61 public-ethos705-prod-va6-6b0d524678ab5d2a.elb.us-east-1.amazonaws.com 3.224.130.214, 443, 49727 AMAZON-AES-AmazoncomIncUS United States 38->61 63 23.203.183.178, 443, 49728 AKAMAI-AS-AkamaiTechnologiesIncUS United States 38->63
Score:
96%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d
Verdict:
Malware
YARA:
1 match(es)
Tags:
AdoDb.stream COM Behavior Trace DeObfuscated Microsoft.xmldom Obfuscated SCRipting.filesystemobject SOS: 0.99 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/9536b8552a2559e9426ce9b342d63bae
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d/
Threat name:
Script-WScript.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2026-10-08 19:28:24 UTC
File Type:
Text (VBS)
AV detection:
11 of 38 (28.95%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=th7465hhhkcseddyg6qxw2qpjyowb6f5qh3vswptr5nmcbum5qgq._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/e3f49ccf-a31d-4602-9b65-2357fe0775c4
Result
Malware family:
n/a
Score:
  7/10
Tags:
adware discovery execution spyware
Link:
https://tria.ge/reports/261008-x6tecsc12v/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Browser Information Discovery
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Windows directory
Executes a VBScript file via the Windows Script Host.
Checks computer location settings
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/99ffcf74e73a85220c7837a17b6a0f4e1d60f8bd81f75959f38f5ac1068cec0d

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:WIN_Malware_SalatStealer_ForgeAuto_542e717b
Create hunting rule
Author:Marjoriefort
Description:Detects SalatStealer (pe, etat binaire)
Rule name:WIN_Malware_Sliver_ForgeAuto_2ddb463c
Create hunting rule
Author:Marjoriefort
Description:Detects Sliver (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_ce8c5b46
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_ValleyRAT_ForgeAuto_401c5e16
Create hunting rule
Author:Marjoriefort
Description:Detects ValleyRAT (pe, etat binaire)

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/91163/

Comments