helper.exe

  • File Path: C:\Program Files\Mozilla Thunderbird\uninstall\helper.exe
  • Description: Thunderbird Helper

Hashes

Type Hash
MD5 BB2FD747BDC619EB96D693D665F403C7
SHA1 944B8620ADE8E25ED39A34DC23B55BA550EF0F56
SHA256 454ECF92E0CF9914D3EF72876913778F0A986922E15D0E337DAA91FB7444DF0D
SHA384 E18A43938CA8D6ACB8B1963CF3053C5B51940204B609E25D3A4CC36FB673C34F3DE7FEE5C360F504B1BD74D7C4D11FC5
SHA512 AADAE7E02594BE1302E2B8E75C1AA80EC87C57B31B6BC79BF0207F178939F055790A80C38EC9683BFA08CC2E6A1A4F000785914C6F338AD317749DEB1897B3D5
SSDEEP 12288:ac/UjD5w8P7y8H++OUDDvPP77+7qB3ayg:ago/e+Lu7C3aj

Signature

  • Status: Signature verified.
  • Serial: 0DDEB53F957337FBEAF98C4A615B149D
  • Thumbprint: 91CABEA509662626E34326687348CAF2DD3B4BBA
  • Issuer: CN=DigiCert SHA2 Assured ID Code Signing CA, OU=www.digicert.com, O=DigiCert Inc, C=US
  • Subject: E=”release+certificates@mozilla.com”, CN=Mozilla Corporation, OU=Firefox Engineering Operations, O=Mozilla Corporation, L=Mountain View, S=California, C=US

File Metadata

  • Original Filename: helper.exe
  • Product Name: Thunderbird
  • Company Name: Mozilla Corporation
  • File Version: 78.1.1
  • Product Version: 78.1.1
  • Language: English (United States)
  • Legal Copyright: Mozilla Corporation

File Similarity (ssdeep match)

File Score
C:\program files\Mozilla Firefox\uninstall\helper.exe 65
C:\Program Files\Mozilla Firefox\uninstall\helper.exe 68
C:\Program Files\Mozilla Firefox\uninstall\helper.exe 65
C:\Program Files\Mozilla Thunderbird\uninstall\helper.exe 75
C:\program files\Mozilla Thunderbird\uninstall\helper.exe 90
C:\Program Files\Mozilla Thunderbird\uninstall\helper.exe 90

Possible Misuse

The following table contains possible examples of helper.exe being misused. While helper.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source Source File Example License
sigma posh_ps_winlogon_helper_dll.yml title: Winlogon Helper DLL DRL 1.0
sigma posh_ps_winlogon_helper_dll.yml description: Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete. Registry entries in HKLM\Software[Wow6432Node]Microsoft\Windows NT\CurrentVersion\Winlogon\ and HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ are used to manage additional helper programs and functionalities that support Winlogon. Malicious modifications to these Registry keys may cause Winlogon to load and execute malicious DLLs and/or executables. DRL 1.0
sigma proc_creation_win_susp_netsh_dll_persistence.yml description: Detects persitence via netsh helper DRL 1.0
sigma proc_creation_win_susp_netsh_dll_persistence.yml - 'helper' DRL 1.0
sigma proc_creation_win_susp_pcwutl.yml - Use of Program Compatibility Troubleshooter Helper DRL 1.0
sigma registry_event_asep_reg_keys_modification.yml - '\Explorer\Browser Helper Objects' DRL 1.0
sigma registry_event_asep_reg_keys_modification_currentversion.yml - '\Explorer\Browser Helper Objects' DRL 1.0
sigma registry_event_asep_reg_keys_modification_wow6432node.yml - '\Explorer\Browser Helper Objects' DRL 1.0
sigma registry_event_asep_reg_keys_modification_wow6432node.yml TargetObject\|contains: '\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\' DRL 1.0
sigma registry_event_asep_reg_keys_modification_wow6432node.yml TargetObject\|endswith: '\Explorer\Browser Helper Objects\{92EF2EAD-A7CE-4424-B0DB-499CF856608E}\NoExplorer' DRL 1.0
LOLBAS Netsh.yml - Command: netsh.exe add helper C:\Path\file.dll  
LOLBAS Netsh.yml Description: Load (execute) NetSh.exe helper DLL file.  
LOLBAS Atbroker.yml Description: Helper binary for Assistive Technology (AT)  
LOLBAS Netsh.yml - Command: netsh.exe add helper C:\Users\User\file.dll  
malware-ioc misp_invisimole.json "comment": "RC2FM helper DLL", © ESET 2014-2018
malware-ioc invisimole ==== RC2FM helper DLL © ESET 2014-2018
malware-ioc win_apt_invisimole_helper_dll.yml title: InvisiMole Helper DLLs dropped © ESET 2014-2018
atomic-red-team index.md - T1546.007 Netsh Helper DLL MIT License. © 2018 Red Canary
atomic-red-team index.md - Atomic Test #1: Netsh Helper DLL Registration [windows] MIT License. © 2018 Red Canary
atomic-red-team index.md - T1547.004 Winlogon Helper DLL MIT License. © 2018 Red Canary
atomic-red-team windows-index.md - T1546.007 Netsh Helper DLL MIT License. © 2018 Red Canary
atomic-red-team windows-index.md - Atomic Test #1: Netsh Helper DLL Registration [windows] MIT License. © 2018 Red Canary
atomic-red-team windows-index.md - T1547.004 Winlogon Helper DLL MIT License. © 2018 Red Canary
atomic-red-team matrix.md | | | Local Account | Netsh Helper DLL | File Deletion | Unsecured Credentials CONTRIBUTE A TEST | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team matrix.md | | | Netsh Helper DLL | Path Interception by Search Order Hijacking CONTRIBUTE A TEST | Hidden Files and Directories | | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team matrix.md | | | Systemd Service | Winlogon Helper DLL | Pass the Ticket | | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team matrix.md | | | Winlogon Helper DLL | | Process Hollowing | | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team windows-matrix.md | | | Logon Script (Windows) | Netsh Helper DLL | File and Directory Permissions Modification CONTRIBUTE A TEST | Silver Ticket CONTRIBUTE A TEST | | | | | Traffic Signaling CONTRIBUTE A TEST | | MIT License. © 2018 Red Canary
atomic-red-team windows-matrix.md | | | Netsh Helper DLL | Parent PID Spoofing | Hidden File System CONTRIBUTE A TEST | Steal or Forge Kerberos Tickets CONTRIBUTE A TEST | | | | | Web Service CONTRIBUTE A TEST | | MIT License. © 2018 Red Canary
atomic-red-team windows-matrix.md | | | Shortcut Modification | Winlogon Helper DLL | Odbcconf | | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team windows-matrix.md | | | Winlogon Helper DLL | | Portable Executable Injection CONTRIBUTE A TEST | | | | | | | | MIT License. © 2018 Red Canary
atomic-red-team T1219.md Invoke-WebRequest -OutFile C:\Users$env:username\Downloads\GoToAssist.exe “https://launch.getgo.com/launcher2/helper?token=e0-FaCddxmtMoX8cY4czssnTeGvy83ihp8CLREfvwQshiBW0_RcbdoaEp8IA-Qn8wpbKlpGIflS-39gW6RuWRM-XHwtkRVMLBsp5RSKp-a3PBM-Pb1Fliy73EDgoaxr-q83WtXbLKqD7-u3cfDl9gKsymmhdkTGsXcDXir90NqKj92LsN_KpyYwV06lIxsdRekhNZjNwhkWrBa_hG8RQJqWSGk6tkZLVMuMufmn37eC2Cqqiwq5bCGnH5dYiSUUsklSedRLjh4N46qPYT1bAU0qD25ZPr-Kvf4Kzu9bT02q3Yntj02ZA99TxL2-SKzgryizoopBPg4Ilfo5t78UxKTYeEwo4etQECfkCRvenkTRlIHmowdbd88zz7NiccXnbHJZehgs6-JSVjQIdPTXZbF9T5z44mi4BQYMtZAS3DE86F0C3D4Tcd7fa5F6Ve8rQWt7pvqFCYyiJAailslxOw0LsGyFokoy65tMF980ReP8zhVcTKYP8s8mhGXihUQJQPNk20Sw&downloadTrigger=restart&renameFile=1” MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md # T1546.007 - Netsh Helper DLL MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md <blockquote>Adversaries may establish persistence by executing malicious content triggered by Netsh Helper DLLs. Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system. It contains functionality to add helper DLLs for extending functionality of the utility. (Citation: TechNet Netsh) The paths to registered netsh.exe helper DLLs are entered into the Windows Registry at HKLM\SOFTWARE\Microsoft\Netsh. MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md Adversaries can use netsh.exe helper DLLs to trigger execution of arbitrary code in a persistent manner. This execution would take place anytime netsh.exe is executed, which could happen automatically, with another persistence technique, or if other software (ex: VPN) is present on the system that executes netsh.exe as part of its normal functionality. (Citation: Github Netsh Helper CS Beacon)(Citation: Demaske Netsh Persistence)</blockquote> MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md - Atomic Test #1 - Netsh Helper DLL Registration MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md ## Atomic Test #1 - Netsh Helper DLL Registration MIT License. © 2018 Red Canary
atomic-red-team T1546.007.md netsh.exe add helper #{helper_file} MIT License. © 2018 Red Canary
atomic-red-team T1547.004.md # T1547.004 - Winlogon Helper DLL MIT License. © 2018 Red Canary
atomic-red-team T1547.004.md <blockquote>Adversaries may abuse features of Winlogon to execute DLLs and/or executables when a user logs in. Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete. Registry entries in HKLM\Software[\\Wow6432Node\\]\Microsoft\Windows NT\CurrentVersion\Winlogon\ and HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ are used to manage additional helper programs and functionalities that support Winlogon. (Citation: Cylance Reg Persistence Sept 2013) MIT License. © 2018 Red Canary
atomic-red-team T1548.002.md Bypasses User Account Control using the Windows 10 Features on Demand Helper (fodhelper.exe). Requires Windows 10. MIT License. © 2018 Red Canary
atomic-red-team T1548.002.md PowerShell code to bypass User Account Control using the Windows 10 Features on Demand Helper (fodhelper.exe). Requires Windows 10. MIT License. © 2018 Red Canary
signature-base apt_sofacy_dec15.yar description = “Dropped C&C helper DLL for AZZY 4.3” CC BY-NC 4.0
signature-base crime_crypto_miner.yar description = “Detects helper script used in a crypto miner campaign” CC BY-NC 4.0
signature-base gen_anomalies_keyword_combos.yar $fp5 = “Firefox Helper” wide fullword CC BY-NC 4.0
signature-base yara_mixed_ext_vars.yar $s2 = “AcroTray - Adobe Acrobat Distiller helper application” fullword wide CC BY-NC 4.0
signature-base yara_mixed_ext_vars.yar $s2 = “Virtual hardware upgrade helper service” fullword wide CC BY-NC 4.0

MIT License. Copyright (c) 2020-2021 Strontic.