MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31
SHA3-384 hash: 443268a3c871f45bf71a5f64bed5cbcb4dcecfc54ff8643e73d8763c5ee9a16625d618d721d59cc1be69e8c12b150cf3
SHA1 hash: edcb976c011c8f7cc5bf183578897e1c4227e9ea
MD5 hash: 628ee296369231cf3bb4e8328933feb8
humanhash: april-pennsylvania-artist-india
File name:MV_POAVOSA_WISDOM_III_SAILING_ORDERS_AND_VESSEL_DETAILSpdf.js
Download: download sample
Signature Formbook
Create hunting rule
File size:3'174'786 bytes
First seen:2026-08-14 03:46:38 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 49152:032FczJ5/G1jlbZJZqPRTGyMTk7nkOJ8zQn9Dgc0vhMznU:H
TLSH T174E5C6B235B71A9A69087349555CBA614F2AC8711BC2E9DCA0CF0FC41B1F4DA2790B7F
Magika javascript
Reporter threatcat_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
123
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler base64 base64 cscript downloader encrypted evasive evasive fingerprint lolbin masquerade obfuscated obfuscated powershell reconnaissance repaired taskkill wscript
Link:
https://www.filescan.io/uploads/6a7e8fd159d164daba633562/reports/9179249a-d866-4950-8175-cd211c5ed44b/overview
Verdict:
Malicious
Labled as:
GT:JS.Acsogenixx.2650
Link:
https://www.hybrid-analysis.com/sample/a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31
Verdict:
Malicious
File Type:
js
First seen:
2026-08-14T00:27:00Z UTC
Last seen:
2026-08-16T02:04:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1958025
Signature
.NET source code contains method to dynamically call methods (often used by packers)
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 file contains suspicious strings
JavaScript source code contains functionality to generate code involving a shell, file or stream
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
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: 1958025 Sample: MV_POAVOSA_WISDOM_III_SAILI... Startdate: 14/08/2026 Architecture: WINDOWS Score: 100 44 www.syney.xyz 2->44 46 www.yishengbee.com 2->46 48 8 other IPs or domains 2->48 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 72 8 other signatures 2->72 11 wscript.exe 3 2->11         started        signatures3 70 Performs DNS queries to domains with low reputation 44->70 process4 file5 42 C:\Temp\ps_hZ0lkwQYSfOc_1786679673687.ps1, ASCII 11->42 dropped 86 Suspicious powershell command line found 11->86 88 Wscript starts Powershell (via cmd or directly) 11->88 90 Bypasses PowerShell execution policy 11->90 92 3 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 conhost.exe 15->25         started        29 25 other processes 15->29 27 conhost.exe 18->27         started        process9 signatures10 74 Modifies the context of a thread in another process (thread injection) 20->74 76 Maps a DLL or memory area into another process 20->76 78 Queues an APC in another process (thread injection) 20->78 80 Found direct / indirect Syscall (likely to bypass EDR) 20->80 31 GXMwrqkbM.exe 20->31 injected 82 Unusual module load detection (module proxying) 23->82 84 Switches to a custom stack to bypass stack traces 23->84 process11 signatures12 98 Maps a DLL or memory area into another process 31->98 100 Found direct / indirect Syscall (likely to bypass EDR) 31->100 34 SearchProtocolHost.exe 13 31->34         started        process13 signatures14 56 Tries to steal Mail credentials (via file / registry access) 34->56 58 Tries to harvest and steal browser information (history, passwords, etc) 34->58 60 Modifies the context of a thread in another process (thread injection) 34->60 62 3 other signatures 34->62 37 cibea5smKS1.exe 34->37 injected 40 firefox.exe 34->40         started        process15 dnsIp16 50 www.yishengbee.com 38.14.131.5, 49751, 80 PEG-SV-PEGTECHINCUS United States 37->50 52 aidantsenior.fr 109.234.166.164, 49752, 49753, 49754 O2SWITCHFR France 37->52 54 3 other IPs or domains 37->54
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31/
Threat name:
Script-JS.Trojan.Acsogenixx
Create hunting rule
Status:
Malicious
First seen:
2026-08-14 03:47:32 UTC
File Type:
Text (JavaScript)
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u523ghpkk6uw7ugs54enpeo42hqwjdlrm65kicslyx5ao4smd4yq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook adware collection defense_evasion discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260814-ecfx3afa48/
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/a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31

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
Create hunting rule
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
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
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
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 a775b31dea57a96fd0d2ef08d791dcd1e1648d7167baa40a4bc5fa07724c1f31

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments