MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4
SHA3-384 hash: 92582fa27472db1a0fad18ccc1c4af7cabb5c06e08bda4a84dd083ea6ce8295a76ed677ccce62e21e8be7809a45423c8
SHA1 hash: 21db91b8b21e29fafd8e1007c87638418a3a8715
MD5 hash: 4d6cef2e0313bfe3a05351799dde98c9
humanhash: hamper-diet-robin-kansas
File name:orden_de_compra__0034672.js
Download: download sample
Signature Formbook
Create hunting rule
File size:1'213'061 bytes
First seen:2026-08-20 14:35:43 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:txAVBDYNYu2eqw2d6KYNnYxUIku+p7kJPcsCl2:6reU4apw7kJPc0
TLSH T1DA45B06893311F8E4603A0A918EEA742F8DBDD829578C98844ED8FF7375DC56DDB10B8
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
140
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Suspicious
Labled as:
SVM:TrojanDownloader/JS.MalBehav.gen
Link:
https://www.hybrid-analysis.com/sample/40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1961217
Signature
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: Suspicious Script Execution From Temp Folder
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1961217 Sample: orden_de_compra__0034672.js Startdate: 20/08/2026 Architecture: WINDOWS Score: 100 46 www.45029605.xyz 2->46 48 www.youpiaocn.com 2->48 50 23 other IPs or domains 2->50 70 Suricata IDS alerts for network traffic 2->70 72 Antivirus detection for URL or domain 2->72 74 Yara detected FormBook 2->74 78 7 other signatures 2->78 11 wscript.exe 1 3 2->11         started        signatures3 76 Performs DNS queries to domains with low reputation 46->76 process4 file5 42 C:\Users\user\AppData\...\dat_71120_6ac9.ps1, ASCII 11->42 dropped 92 JScript performs obfuscated calls to suspicious functions 11->92 94 Suspicious powershell command line found 11->94 96 Wscript starts Powershell (via cmd or directly) 11->96 98 4 other signatures 11->98 15 powershell.exe 23 11->15         started        signatures6 process7 file8 44 C:\Users\user\AppData\...\jv3t15tl.cmdline, Unicode 15->44 dropped 58 Writes to foreign memory regions 15->58 60 Injects a PE file into a foreign processes 15->60 19 MSBuild.exe 15->19         started        22 csc.exe 3 15->22         started        25 conhost.exe 15->25         started        signatures9 process10 file11 80 Modifies the context of a thread in another process (thread injection) 19->80 82 Maps a DLL or memory area into another process 19->82 84 Queues an APC in another process (thread injection) 19->84 86 3 other signatures 19->86 27 F7fub2SaTGyk.exe 19->27 injected 40 C:\Users\user\AppData\Local\...\jv3t15tl.dll, PE32 22->40 dropped 30 cvtres.exe 1 22->30         started        signatures12 process13 signatures14 88 Maps a DLL or memory area into another process 27->88 90 Found direct / indirect Syscall (likely to bypass EDR) 27->90 32 iexpress.exe 13 27->32         started        process15 signatures16 62 Tries to steal Mail credentials (via file / registry access) 32->62 64 Tries to harvest and steal browser information (history, passwords, etc) 32->64 66 Modifies the context of a thread in another process (thread injection) 32->66 68 3 other signatures 32->68 35 zhcbik0LlZs.exe 32->35 injected 38 firefox.exe 32->38         started        process17 dnsIp18 52 parking.d.parity.domains 2.59.170.19, 49883, 49884, 49885 WORLDSTREAMNL Netherlands 35->52 54 www.profidovozaut.sk 37.9.175.133, 49976, 49977, 49978 WEBSUPPORT-SRO-SK-ASSK Slovakia 35->54 56 15 other IPs or domains 35->56
Score:
87%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=icu2qxe3yrmuhqx6uvn4k563tahcfpayhocstjgam7j3564vp62a._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/9cc567d9-34fc-4e9f-a25b-7d419c0e255c
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260820-ryrb5syglf/
Behaviour
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
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:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4

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
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

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

Comments