MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814. 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: 10


Intelligence 10 IOCs YARA 17 File information Comments
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SHA256 hash: 3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814
SHA3-384 hash: 993c5fbcdce183d0427c08609d7992ddef20e8e95fedad2865d0235a7677aa5972f02ec24a99b5b0ebdc237caede171b
SHA1 hash: aecbda638361da8a24489c97def6b9e23b959bad
MD5 hash: 8090f19f957ac95a89dbad8924e26c85
humanhash: connecticut-neptune-equal-victor
File name:47907DOCS.js
Download: download sample
Signature Formbook
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File size:106'399 bytes
First seen:2026-08-04 09:11:41 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:G5WylA7ddO7Jm4tOJaCDOD9V0ytRfblFXbAQPMQjHtGAEua9mV3wz:CfaCJmhD0V75/PM2Z+mpwz
TLSH T1AEA3FB9119977080633A6BAFE27B98D5E3B64B6F0180296BB83C7840DFF1909DDE0D75
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
163
Origin country :
SE SE
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 obfuscated repaired
Link:
https://www.filescan.io/uploads/6a71acf7fc2248607e2e8e02/reports/d74d0d38-16e8-4e60-bb53-9cbe394fe9c3/overview
Verdict:
Malicious
Labled as:
SVM:TrojanDownloader/JS.MalBehav.gen
Link:
https://www.hybrid-analysis.com/sample/3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814
Verdict:
Malicious
File Type:
js
First seen:
2026-08-03T22:52:00Z UTC
Last seen:
2026-08-05T20:45:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814/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/1951775
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Binary is likely a compiled AutoIt script file
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
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
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: 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 Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1951775 Sample: 47907DOCS.js Startdate: 04/08/2026 Architecture: WINDOWS Score: 100 41 www.songoftheeast.ru 2->41 43 www.oltars.dev 2->43 45 9 other IPs or domains 2->45 59 Suricata IDS alerts for network traffic 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 9 other signatures 2->65 11 wscript.exe 21 2->11         started        signatures3 process4 dnsIp5 53 107.173.62.98, 49719, 80 NEXEON-NexeonTechnologiesIncUS United States 11->53 39 C:\Temp\S6E5BIL5.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 Injects a PE file into a foreign processes 16->57 19 aspnet_compiler.exe 16->19         started        22 aspnet_compiler.exe 16->22         started        24 conhost.exe 16->24         started        26 22 other processes 16->26 process10 signatures11 67 Modifies the context of a thread in another process (thread injection) 19->67 69 Maps a DLL or memory area into another process 19->69 71 Queues an APC in another process (thread injection) 19->71 73 Found direct / indirect Syscall (likely to bypass EDR) 19->73 28 UFhsfOsaKLFh.exe 19->28 injected 75 Unusual module load detection (module proxying) 22->75 77 Switches to a custom stack to bypass stack traces 22->77 process12 signatures13 79 Binary is likely a compiled AutoIt script file 28->79 81 Maps a DLL or memory area into another process 28->81 83 Found direct / indirect Syscall (likely to bypass EDR) 28->83 31 rasdial.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 ryHnOUH40u08Ze.exe 31->34 injected 37 firefox.exe 31->37         started        process16 dnsIp17 47 72.251.11.93, 49727, 49728, 49729 OVHFR Canada 34->47 49 gotais.org 162.241.2.224, 49744, 49745, 49746 ORACLE-BMC-31898-OracleCorporationUS Brazil 34->49 51 4 other IPs or domains 34->51
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814/
Threat name:
Script-JS.Trojan.DarkCloud
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Status:
Malicious
First seen:
2026-08-04 08:31:28 UTC
File Type:
Text (JavaScript)
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hwnwgti5oy2pw6djs54ylz56xnnbhtqecm6y2ycounxcnu7hnaka._file
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/260804-k6gpcawfjg/
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
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/3d9b634d1d7634fb7869977985e7bebb5a13ce04133d8d604ea36e26d3e76814

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:Suspicious_Process
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Author:Security Research Team
Description:Suspicious process creation
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.

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