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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f. 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 23 File information Comments
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SHA256 hash: 5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f
SHA3-384 hash: 33546048b8c469bb185b8e6736a5ad0fa1e3262bfb2b6f3550fd36de0315c4fc16f05209cede12fcc26a9567d630cf24
SHA1 hash: 10f8124e4997728ea5cadd01291cb2e334f6aa04
MD5 hash: f619aee01886a0505a12e9ebe143dd9c
humanhash: carpet-minnesota-carolina-enemy
File name:Documents.JS
Download: download sample
Signature Formbook
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File size:4'219'857 bytes
First seen:2026-09-23 08:36:47 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 98304:y/YD3rOEbHIe9oxUIKMQtM0DwWuIWD9QlMTsJY2uDI6hKJ:y/YD3xoe0XKD5DwjJ6QC
TLSH T1951686511B64903D3239BB7CB935A862C20951B381E9DF19342F9338BB75A337BD89E1
Magika txt
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
149
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Other.Malware-gen.64788786.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug dropper evasive lolbin obfuscated obfuscated packed repaired tracker
Link:
https://www.filescan.io/uploads/6ab38fbdb89c596ea3a9930d/reports/59b53cc4-490f-4883-ae03-3c95b25c3f64/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f
Verdict:
Malicious
File Type:
js
First seen:
2026-09-23T05:02:00Z UTC
Last seen:
2026-09-24T05:46:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1976643
Signature
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
JavaScript source code contains call to eval() to check own source code (likely for evading instrumentation)
JavaScript source code contains functionality to generate code involving a shell, file or stream
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: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Suspicious Command Patterns In Scheduled Task Creation
Sigma detected: WScript or CScript Dropper
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 schtasks.exe or at.exe to add and modify task schedules
Uses whoami command line tool to query computer and username
Windows Scripting host queries suspicious COM object (likely to drop second stage)
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: 1976643 Sample: Documents.JS.js Startdate: 23/09/2026 Architecture: WINDOWS Score: 100 62 www.sozioapp.com 2->62 64 www.buyukcekmecedovme.com 2->64 66 2 other IPs or domains 2->66 78 Suricata IDS alerts for network traffic 2->78 80 Multi AV Scanner detection for submitted file 2->80 82 Yara detected FormBook 2->82 84 7 other signatures 2->84 10 wscript.exe 1 4 2->10         started        13 cmd.exe 1 4 2->13         started        signatures3 process4 signatures5 104 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->104 106 WScript reads language and country specific registry keys (likely country aware script) 10->106 15 FSJMYSOLAXRJZQND.exe 3 10->15         started        19 cmd.exe 1 13->19         started        21 conhost.exe 13->21         started        process6 file7 60 C:\Users\user\...\DNQZJRXALOSYMJSF.url, MS 15->60 dropped 70 Found API chain indicative of debugger detection 15->70 72 Modifies the context of a thread in another process (thread injection) 15->72 74 Maps a DLL or memory area into another process 15->74 76 3 other signatures 15->76 23 0jqGEW1vcg4rus.exe 15->23 injected 26 cmd.exe 1 15->26         started        28 cmd.exe 1 15->28         started        34 2 other processes 15->34 30 FSJMYSOLAXRJZQND.exe 1 19->30         started        32 conhost.exe 19->32         started        signatures8 process9 signatures10 96 Maps a DLL or memory area into another process 23->96 98 Found direct / indirect Syscall (likely to bypass EDR) 23->98 36 fixmapi.exe 13 23->36         started        100 Uses schtasks.exe or at.exe to add and modify task schedules 26->100 102 Uses whoami command line tool to query computer and username 26->102 39 whoami.exe 1 26->39         started        41 schtasks.exe 1 28->41         started        43 cmd.exe 1 30->43         started        45 cmd.exe 1 30->45         started        47 conhost.exe 30->47         started        49 schtasks.exe 1 34->49         started        process11 signatures12 86 Tries to steal Mail credentials (via file / registry access) 36->86 88 Tries to harvest and steal browser information (history, passwords, etc) 36->88 90 Modifies the context of a thread in another process (thread injection) 36->90 94 3 other signatures 36->94 51 zbPuOOgmCFd.exe 36->51 injected 54 firefox.exe 36->54         started        92 Uses whoami command line tool to query computer and username 43->92 56 whoami.exe 1 43->56         started        58 schtasks.exe 1 45->58         started        process13 dnsIp14 68 natroredirect.natrocdn.com 85.159.66.93, 49744, 80 CIZGITR Turkey 51->68
Score:
96%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f/
Threat name:
Script-JS.Trojan.Cryxos
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Status:
Malicious
First seen:
2026-09-23 08:37:31 UTC
File Type:
Text (JavaScript)
AV detection:
6 of 36 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lae5m7elc65754zolsw2efpn7uox3oszxoqtvas667ufgqt2bipq._file
Verdict:
malicious
Label(s):
Formbook
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Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/260923-kjabragh36/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5809d67c8b17/report/overview.html
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/5809d67c8b17bbfef32e5cada215edfd1d7dba59bba13a825ef7e853427a0a1f

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:MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait
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Author:Marjoriefort
Description:Detects AgentTesla (inconnu, etat extrait)
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_VBS_Randomized_ActiveX_Downloader
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Author:Marjoriefort
Description:Dropper VBS obfusque : ActiveXObject a identifiant randomise (20 MAJ), SaveToFile, .Run
Reference:Veille fraicheur 2026-09-14 / grappe VBS randomisee
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.

Comments