Invoice.abcsys.vn -

The EInvoice ABCSys portal at invoice.abcsys.vn, developed by VNiSC, provides digital invoice management compliant with Vietnamese regulations, featuring a redesigned user interface, enhanced security, and multilingual support. The updated software streamlines electronic invoice issuance while adhering to recent government circulars. Read the full update at VNiSC.

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E-invoice software . Updated new features according ... - VNiSC

Here are some interesting features of invoice.abcsys.vn (an electronic invoice system commonly used in Vietnam for compliance with the country’s e-invoicing regulations):

Real-time validation with tax authority (TCT)
The system likely connects directly to Vietnam’s General Department of Taxation, enabling invoices to be validated and registered before being sent to buyers.
Automatic conversion to XML format
Invoices are generated in the legally required XML format, which ensures compliance with Decree 123/2020/ND-CP.
QR code for fast lookup
Each invoice includes a QR code that customers can scan to verify authenticity on the tax authority’s portal—helpful for reducing fake invoices.
Multi-channel delivery
Supports sending invoices via email, SMS, or directly through the customer portal, with automatic retries if delivery fails. invoice.abcsys.vn
Error handling and adjustment workflows
Provides a structured way to issue adjustment invoices (Điều chỉnh) or replacement invoices (Thay thế) without manually voiding the original—saving time during audits.
Role-based access
Different users (accountant, manager, viewer) can have granular permissions, making it suitable for companies with internal approval workflows.
API integration readiness
Offers APIs for ERP or POS systems to push invoice data automatically, reducing duplicate entry and human error.

Would you like a deeper technical look at one of these features, such as how the XML validation or QR code generation works?

invoice.abcsys.vn is a dedicated web portal operated by VNISC for searching and verifying e-invoices, offering features to download XML or PDF files for tax compliance. Users can verify the authenticity of invoices by entering a unique "Mã tra cứu" (Lookup Code) and checking the seller's tax ID. For more details, visit invoice.abcsys.vn. HÓA ĐƠN GIÁ TRỊ GIA TĂNG - daesang.vn

8 May 2025 — Page 1 * Thuế Khác. Phí dịch vụ * Mẫu số (From) : 1. * Ký hiệu (Serial): C22TSS. * Số (No) : 00057268. * Vé Vé * Đơn vị bán hàng ( daesang.vn HÓA ĐƠN GIÁ TRỊ GIA TĂNG - daesang.vn

8 May 2025 — Page 1 * Thuế Khác. Phí dịch vụ * Mẫu số (From) : 1. * Ký hiệu (Serial): C22TSS. * Số (No) : 00057268. * Vé Vé * Đơn vị bán hàng ( daesang.vn The EInvoice ABCSys portal at invoice

I've taken a look at the website invoice.abcsys.vn. Here are some good features I've identified:

Simple and Clean Design: The website has a simple and clean design, making it easy to navigate and understand.
Clear Information: The website clearly displays information about invoices, including invoice numbers, dates, and amounts.
Search Functionality: The website has a search bar that allows users to search for specific invoices by invoice number or other criteria.
Invoice Management: The website appears to have a comprehensive invoice management system, allowing users to create, edit, and manage invoices.
Security: The website uses HTTPS encryption, which ensures that data transmitted between the website and users is secure and protected.

However, I'd like to know more about what you're looking for. Can you please provide more context or specific requirements you'd like me to focus on? Are you looking for:

Specific features or functionalities?
Improvements or suggestions for the website?
Technical analysis or security assessment?

Let me know, and I'll do my best to provide a more detailed and relevant analysis!

Option 4: Internal / Team announcement

Post: 🔔 Remind customers that our official invoice system is live at:
invoice.abcsys.vn

Please direct all billing inquiries there first. This ensures faster resolution and secure access to payment records.

Thank you for helping keep our process efficient!

5. The Objective

The end goal of a campaign using invoice.abcsys.vn is usually financial theft: Real-time validation with tax authority (TCT) The system

Account Takeover: Using stolen credentials to access the victim's email. From there, attackers read email threads and insert themselves into real payment conversations to divert funds.
Invoice Redirection: The attacker sends a fake invoice to the finance department with the attacker's bank details instead of the real vendor's details.
Ransomware: In some cases, the access gained through this domain is used to deploy ransomware across the corporate network.

1. The Domain Profile

Domain Name: abcsys.vn
Subdomain: invoice
Target TLD: .vn (Vietnam)
Status: Domains like this are typically registered recently, often via proxy services to hide the identity of the registrant. The use of a .vn domain suggests the attackers are either targeting Vietnamese businesses or are part of a Vietnamese-speaking cybercrime group (or pretending to be one).

Option 1: LinkedIn / Professional Network (B2B focus)

Title: Simplify Your Invoicing Process with invoice.abcsys.vn

Post: Managing invoices manually can be time-consuming and error-prone. That’s why we’re streamlining access to our digital invoicing system.

👉 Access your invoices anytime, anywhere:
🔗 invoice.abcsys.vn

Whether you need to download, review, or track payment statuses, our dedicated portal makes it fast and secure.

✅ Real-time invoice retrieval
✅ Simplified payment tracking
✅ Secure, role-based access

Bookmark the link and save time on administrative tasks.

#Invoicing #ABCSys #BillingSolutions #DigitalTransformation

Signature Block:

Prepared by (Người lập)
Chief Accountant (Kế toán trưởng)
Legal Representative (Giám đốc)