MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7. 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 17 File information Comments
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SHA256 hash: 3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7
SHA3-384 hash: dc11e2ad2f5f8ff57c126c694be3c0bca28a40ff068ebd23e270228e903f97cd3cb42bf98c09a70338124cc1928d801d
SHA1 hash: 7a636e060f2ecb53f5c00011a28e48cc8d5a7e18
MD5 hash: ce54c2a8863a13390a7c9d045e019a3c
humanhash: india-muppet-quebec-cat
File name:ce54c2a8863a13390a7c9d045e019a3c.js
Download: download sample
Signature Formbook
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File size:1'988'651 bytes
First seen:2026-03-14 19:06:14 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:9HqqO9CjyYWlwLKNzPgDvIfVdrl7JBcScbkVptS55EX4asPa59GCmQxKvLmvxqCs:WMmDp5vYL
Threatray 2'671 similar samples on MalwareBazaar
TLSH T1DE95AE8963C422F4D7C42B0ED1FD844FF3FA804962A6789A6DA2F36D35F7B09524E254
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
156
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Muldrop.1170.3541.15621.UNOFFICIAL
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Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69b5b1ba93b644ca466a0cd1
Tags:
shell spawn sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated repaired
Link:
https://www.filescan.io/uploads/69b5b1ab2000fc76c3dd86ba/reports/3c144e3c-70c7-481a-96ec-b1556f9c933d/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7
Verdict:
Malicious
File Type:
js
Detections:
Trojan.Win32.InjectorNetT.s PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Noon.sb Trojan-Downloader.JS.SLoad.sb Trojan.Win32.Agent.sb Trojan.PowerShell.Cobalt.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7/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/1883830
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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)
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: 1883830 Sample: 9dmPFni3qL.js Startdate: 14/03/2026 Architecture: WINDOWS Score: 100 46 www.yiqud.xyz 2->46 48 www.oreani.xyz 2->48 50 26 other IPs or domains 2->50 66 Suricata IDS alerts for network traffic 2->66 68 Antivirus detection for URL or domain 2->68 70 Multi AV Scanner detection for submitted file 2->70 74 6 other signatures 2->74 11 wscript.exe 3 2->11         started        signatures3 72 Performs DNS queries to domains with low reputation 48->72 process4 file5 44 C:\Temp\ps_gVUcfeykR5sE_1773516497535.ps1, ASCII 11->44 dropped 80 JScript performs obfuscated calls to suspicious functions 11->80 82 Suspicious powershell command line found 11->82 84 Wscript starts Powershell (via cmd or directly) 11->84 86 4 other signatures 11->86 15 powershell.exe 16 11->15         started        18 taskkill.exe 1 11->18         started        signatures6 process7 signatures8 88 Writes to foreign memory regions 15->88 90 Injects a PE file into a foreign processes 15->90 20 aspnet_compiler.exe 15->20         started        23 aspnet_compiler.exe 15->23         started        25 conhost.exe 15->25         started        29 16 other processes 15->29 27 conhost.exe 18->27         started        process9 signatures10 76 Maps a DLL or memory area into another process 20->76 31 8RJ5f5JBGoq0G4.exe 20->31 injected 78 Unusual module load detection (module proxying) 23->78 process11 signatures12 92 Maps a DLL or memory area into another process 31->92 34 cipher.exe 13 31->34         started        process13 signatures14 58 Tries to steal Mail credentials (via file / registry access) 34->58 60 Tries to harvest and steal browser information (history, passwords, etc) 34->60 62 Modifies the context of a thread in another process (thread injection) 34->62 64 4 other signatures 34->64 37 Kck4rQ2h.exe 34->37 injected 40 firefox.exe 34->40         started        42 chrome.exe 34->42         started        process15 dnsIp16 52 www.oreani.xyz 104.207.65.180, 49766, 49767, 49768 WINNE-IPV4-1US United States 37->52 54 www.dulincreative.com 100.42.49.123, 49789, 49790, 49791 UNIFIEDLAYER-AS-1US United States 37->54 56 15 other IPs or domains 37->56
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7
Threat name:
Script-JS.Trojan.Cryxos
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Status:
Malicious
First seen:
2026-03-13 06:04:58 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hp2ahragulnrirqxe6bucwxhtsd7c6nf2mmtpysy57ywvc5aqotq._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
39354244a03fbf08298683ccba89189f18101b2e7a8bf47e2d7f22759d1e35cc
Formbook
40ead66f8b514c57ecda339f991d248e99c6a164b64d5f1e05d69567bfef1a0a
Formbook
4f5dd07e22dc81e6a7c8eb30577dbd55887208d2ec9a4140153c4092a70ded85
Formbook
6100d5b684095bd7ffe9496f31e0376c4543822ef21e6e6b383fae25604e9a3f
Formbook
6ac566e9a69e4bd338cfa6665c04a954c891fc5c09698ae85a40d9565796f481
Formbook
a7084e26390ab1dbd0318403c7f73dc63d3ca65ba7fb289349e88de4e46dc98f
Formbook
ac1bdadf98761eed39833d096c732ca61ede04535ecced46d1f662f9dab206f6
Formbook
b79268daae3fcb3b75bdb26c6dd2d2224626369a32469b22c5f36b8bd0fe9f04
Formbook
c506931fb1c4252abed4ab22d82f2ebc88e46f58dd83ddca62b03c5ea6d8dc1e
Formbook
df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Formbook
error
Formbook
+ 2'661 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook defense_evasion discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260314-xr8whaes5j/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
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/3bf403c406a2db1446172783415ae79c87f179a5d31937e258eff16a8ba083a7

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
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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: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/

File information

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

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