MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee. 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 19 File information Comments
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SHA256 hash: efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee
SHA3-384 hash: 76568c2d8e5f0b77d50ad3e057044390b059c8296b6d5a425c3122e181e44506fc2bacbee22e8464f95a63d5cce95999
SHA1 hash: 1e3cacaf0f1d680925fe49e427559b6926b69cae
MD5 hash: b6e41b35fd514049f7384bc05a560210
humanhash: red-butter-purple-pip
File name:report.pdf.js
Download: download sample
Signature Formbook
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File size:1'978'559 bytes
First seen:2026-06-22 15:18:35 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:KSojqVsHp9cnTfQEf91rkrGOvCXznp6fvdv1f/cumcGXqF+f+38:8+khv6nIFGcM+M
TLSH T12E9502114AC42FA4CB9D5B1C50BF364AE3A1099E9456288AEB33FD46FFF7B04550B1B8
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
126
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.32567.UNOFFICIAL
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Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a3953871548daf709f8e670
Tags:
vmdetect phishing
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm anti-vm aspnet_compiler base64 base64 encrypted evasive evasive fingerprint lolbin masquerade obfuscated powershell reconnaissance repaired
Link:
https://www.filescan.io/uploads/6a39534a62d0679105fbea37/reports/1a7f0abb-a464-4c89-af56-9cdd5a7f0df1/overview
Verdict:
Suspicious
Labled as:
JS/Agent.DJK
Link:
https://www.hybrid-analysis.com/sample/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee
Verdict:
Malicious
File Type:
js
First seen:
2026-06-22T05:47:00Z UTC
Last seen:
2026-06-24T12:46:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.InjectorNetT.s Trojan-Dropper.JS.SDrop.sb HEUR:Trojan-Downloader.Script.Generic Trojan-Spy.Noon.HTTP.ServerRequest PDM:Trojan.Win32.Generic Trojan.JS.SAgent.sb Trojan-Spy.Win32.Noon.sb Trojan-PSW.Win32.Stealer.sb Trojan-Downloader.JS.SLoad.sb HEUR:Worm.Script.Generic HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1931973
Signature
.NET source code contains potential unpacker
AI detected malicious Powershell script
Bypasses PowerShell execution policy
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
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
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Suspicious Parent Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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)
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 MSILLoadEncryptedAssembly
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1931973 Sample: report.pdf.js Startdate: 22/06/2026 Architecture: WINDOWS Score: 100 52 montajesviales.com 2->52 54 www.yohoboys.com 2->54 56 2 other IPs or domains 2->56 64 Suricata IDS alerts for network traffic 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for submitted file 2->68 70 11 other signatures 2->70 11 wscript.exe 3 2->11         started        signatures3 process4 file5 50 C:\Temp\ps_YNYqvv67sF6x_1782150818162.ps1, ASCII 11->50 dropped 86 JScript performs obfuscated calls to suspicious functions 11->86 88 Suspicious powershell command line found 11->88 90 Wscript starts Powershell (via cmd or directly) 11->90 92 4 other signatures 11->92 15 powershell.exe 16 11->15         started        18 taskkill.exe 1 11->18         started        signatures6 process7 signatures8 94 Writes to foreign memory regions 15->94 96 Injects a PE file into a foreign processes 15->96 20 aspnet_compiler.exe 15->20         started        23 aspnet_compiler.exe 15->23         started        25 aspnet_compiler.exe 15->25         started        29 22 other processes 15->29 27 conhost.exe 18->27         started        process9 signatures10 72 Maps a DLL or memory area into another process 20->72 31 xlpGC5IHP2Ba3.exe 20->31 injected 34 8etU8Q2VaJ.exe 23->34 injected 74 Unusual module load detection (module proxying) 25->74 process11 signatures12 98 Maps a DLL or memory area into another process 31->98 36 subst.exe 13 31->36         started        39 subst.exe 13 34->39         started        process13 signatures14 76 Tries to steal Mail credentials (via file / registry access) 36->76 78 Maps a DLL or memory area into another process 36->78 80 Queues an APC in another process (thread injection) 36->80 82 Unusual module load detection (module proxying) 36->82 41 R0nrZeWGWsbo.exe 36->41 injected 44 chrome.exe 36->44         started        84 Tries to harvest and steal browser information (history, passwords, etc) 39->84 46 svXi4V8tT3XH.exe 39->46 injected 48 chrome.exe 39->48         started        process15 dnsIp16 58 montajesviales.com 45.191.0.242, 49715, 49723, 80 TECNOWEBPERUSACPE Chile 41->58 60 www.yohoboys.com 23.224.245.203, 80 CNSERVERS-CNSERVERSLLCUS United States 41->60 62 www.alrgt.com 185.216.114.30, 80 AS49126TR Turkey 41->62
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee
Threat name:
Script-JS.Trojan.Heuristic
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Status:
Malicious
First seen:
2026-06-22 12:13:50 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 38 (23.68%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=57npj3lpockb7jkwiniz6crliiga7jferdujgrarzzluizprdhxa._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook adware collection defense_evasion discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260622-sryy3sdy5l/
Behaviour
Kills process with taskkill
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
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
Command and Scripting Interpreter: PowerShell
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/efdaf4ed6f70941fa55643519f0a2b420c0fa4a488e8934411ce574465f119ee

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:Base64_Encoded_Powershell_Directives
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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
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
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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:SUSP_obfuscated_JS_obfuscatorio
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Author:@imp0rtp3
Description:Detect JS obfuscation done by the js obfuscator (often malicious)
Reference:https://obfuscator.io
Rule name:telebot_framework
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Author:vietdx.mb
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/
Rule name:vmdetect
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Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

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