MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2ecf3e0440ae34436226bd186b9908a9a4802c45fe4fd69c63a628e9ad856a1e. 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 19 File information Comments

SHA256 hash: 2ecf3e0440ae34436226bd186b9908a9a4802c45fe4fd69c63a628e9ad856a1e
SHA3-384 hash: c3b32026bcaa9c19e57e75ed758acd23b6d92e6c36a64bd7e6b4fa537e826c273e0083e48513ebe8559c3d04be8af62f
SHA1 hash: 5b27485244b0a1a85f9680fcf12d2a700129576a
MD5 hash: 023a1c38e273e23db3fe20ea53fa5cf7
humanhash: fanta-potato-queen-hamper
File name:PO 4501058566.js
Download: download sample
Signature Formbook
File size:2'055'638 bytes
First seen:2026-04-14 11:10:22 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:v7nCcxLKF+V2/fK8RR/Ne09DadBI1Hl24kkQDXAH13v1YZ2MfBQrAeAqXOIxo:DPxLGXNbmEr+K3mAUeNex
TLSH T16A9502158AC43FA8CFAC561D80FE150EA3F04D8A5419798AFB33FD5AEFB7A045217198
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence


File Origin
# of uploads :
1
# of downloads :
141
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
92.5%
Tags:
shellcode vmdetect shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm encrypted formbook obfuscated repaired
Verdict:
Malicious
File Type:
js
First seen:
2026-04-14T06:28:00Z UTC
Last seen:
2026-04-16T09:14:00Z UTC
Hits:
~10000
Detections:
Trojan.PowerShell.Cobalt.sb Trojan-Spy.Win32.Noon.sb Trojan-PSW.Win32.Stealer.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic Trojan.Win32.InjectorNetT.s PDM:Trojan.Win32.Generic HEUR:Worm.Script.Generic Trojan.Win32.Agent.sb Trojan.JS.SAgent.sb Trojan-Downloader.JS.SLoad.sb Trojan-Spy.Noon.HTTP.ServerRequest Backdoor.Agent.HTTP.C&C
Result
Threat name:
FormBook
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Signature
AI detected malicious Powershell script
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
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1897983 Sample: PO 4501058566.js Startdate: 14/04/2026 Architecture: WINDOWS Score: 100 46 www.thesisclaw.xyz 2->46 48 xm8i.com 2->48 50 29 other IPs or domains 2->50 66 Suricata IDS alerts for network traffic 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Antivirus detection for URL or domain 2->70 74 7 other signatures 2->74 11 wscript.exe 3 2->11         started        signatures3 72 Performs DNS queries to domains with low reputation 46->72 process4 file5 44 C:\Temp\ps_ntAMZxVcndU2_1776165921773.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 15 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 vuxhYVY3P.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 newdev.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 7CFQICwYKm4QMB.exe 34->37 injected 40 firefox.exe 34->40         started        42 chrome.exe 34->42         started        process15 dnsIp16 52 aitutoring.vip 15.197.225.128, 49785, 49786, 49787 TANDEMUS United States 37->52 54 smarte3info.fr 185.135.132.97, 49813, 49814, 49815 RMI-FITECHFR France 37->54 56 19 other IPs or domains 37->56
Gathering data
Threat name:
Win32.Trojan.Egairtigado
Status:
Malicious
First seen:
2026-04-14 09:30:28 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook adware defense_evasion discovery execution rat spyware stealer trojan
Behaviour
Kills process with taskkill
Modifies Internet Explorer settings
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
ConfuserEx .NET packer
Suspicious use of SetThreadContext
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.

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
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Author:Willi Ballenthin
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Author:vietdx.mb
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:vmdetect
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.

Comments