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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9. 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: 11


Intelligence 11 IOCs YARA 16 File information Comments
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SHA256 hash: c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9
SHA3-384 hash: 08d9d93ea0bf7bd96d8c3061eb329a762292996c5e73c0cb37d3c0b7f5088e599a4089bacaac79bed2c8e5f8f215bf3d
SHA1 hash: 0c5285d9b68fbf15740c2108827b74c068d35ea9
MD5 hash: b42b893a05ca48bfa6c91deee6118f9a
humanhash: sweet-mango-foxtrot-winter
File name:AAZORDER321202026pdf.js
Download: download sample
Signature Formbook
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File size:19'398 bytes
First seen:2026-09-17 13:09:36 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:yTVsEiH62IhoN8AQtUxB/j1Snga/BmlLhiJY8WyJJBJ0L2rmjBh5/al/4Phh0tDz:yTVsEiH62IhoN8AQtUxB71QgaZBjAKmA
TLSH T10E92EB0459A274806377377FA22BA8E4F7B7076B02844987B47CB5958FB1C0EDDD48BA
Magika javascript
Reporter threatcat_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
157
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Obfus-2303.UNOFFICIAL
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Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
encrypted evasive masquerade obfuscated repaired
Link:
https://www.filescan.io/uploads/6aabe6c2b65eebed4e0257b8/reports/0d66da6e-51c4-4a02-8b41-32bddc2b37e3/overview
Verdict:
Malicious
Labled as:
Trojan.Formbook.JS
Link:
https://www.hybrid-analysis.com/sample/c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9
Verdict:
Malicious
File Type:
js
First seen:
2026-09-17T09:42:00Z UTC
Last seen:
2026-09-18T09:46:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1974231
Signature
.NET source code contains potential unpacker
AI detected malicious Powershell script
Bypasses PowerShell execution policy
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
JavaScript source code contains functionality to generate code involving a shell, file or stream
JavaScript source code contains functionality to generate code involving HTTP requests or file downloads
JScript performs obfuscated calls to suspicious functions
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)
Sample uses process hollowing technique
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
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 Generic JS Downloader
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1974231 Sample: AAZORDER321202026pdf.js Startdate: 17/09/2026 Architecture: WINDOWS Score: 100 41 www.wiscona.com 2->41 43 www.konsilieri.ru 2->43 45 11 other IPs or domains 2->45 61 Suricata IDS alerts for network traffic 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 Yara detected Generic JS Downloader 2->65 67 10 other signatures 2->67 11 wscript.exe 21 2->11         started        signatures3 process4 dnsIp5 53 45.141.21.100, 49709, 80 BEYOND_ASNDE France 11->53 39 C:\Temp\K1VNLHFJ.ps1, ASCII 11->39 dropped 85 System process connects to network (likely due to code injection or exploit) 11->85 87 JScript performs obfuscated calls to suspicious functions 11->87 89 Wscript starts Powershell (via cmd or directly) 11->89 91 4 other signatures 11->91 16 powershell.exe 16 11->16         started        file6 signatures7 process8 signatures9 55 Writes to foreign memory regions 16->55 57 Sample uses process hollowing technique 16->57 59 Injects a PE file into a foreign processes 16->59 19 aspnet_compiler.exe 16->19         started        22 aspnet_compiler.exe 16->22         started        24 conhost.exe 16->24         started        26 24 other processes 16->26 process10 signatures11 69 Modifies the context of a thread in another process (thread injection) 19->69 71 Maps a DLL or memory area into another process 19->71 73 Queues an APC in another process (thread injection) 19->73 75 Found direct / indirect Syscall (likely to bypass EDR) 19->75 28 n3dWcmOhEAgy.exe 19->28 injected 77 Unusual module load detection (module proxying) 22->77 79 Switches to a custom stack to bypass stack traces 22->79 process12 signatures13 81 Maps a DLL or memory area into another process 28->81 83 Found direct / indirect Syscall (likely to bypass EDR) 28->83 31 wlanext.exe 13 28->31         started        process14 signatures15 93 Tries to steal Mail credentials (via file / registry access) 31->93 95 Tries to harvest and steal browser information (history, passwords, etc) 31->95 97 Modifies the context of a thread in another process (thread injection) 31->97 99 3 other signatures 31->99 34 3S5qD1EK.exe 31->34 injected 37 firefox.exe 31->37         started        process16 dnsIp17 47 www.wiscona.com 185.176.225.29, 49721, 49722, 49723 INFOMANIAK-ASCH Switzerland 34->47 49 www.733f.top 43.248.142.199, 49717, 49718, 49719 HJ-HIDDOSHebeiSeaWhaleTechnologyCoLtdCN China 34->49 51 3 other IPs or domains 34->51
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9/
Threat name:
Script-JS.Backdoor.FormBook
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Status:
Malicious
First seen:
2026-09-17 12:48:32 UTC
AV detection:
6 of 38 (15.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yc5e2nfjwdrc7dgxjdpflva52mq5zw4u66b4csosuksneqn6y7eq._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/cd74c165-0dd9-43dc-aba5-17aced8d6735
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook adware collection discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260917-qekvksvs8k/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
ConfuserEx .NET packer
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Badlisted process makes network request
Family: Formbook
Formbook payload
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/c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9

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
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
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Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
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Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
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Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_CMD_Powershell_Usage
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Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
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Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

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

Malspam

Formbook

Java Script (JS) js c0ba4d34a9b0e22f8cd748de55d41dd321dcdb94f783c149d2a2a4d241bec7c9

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments