How to spot fake emails like the ACHIVA email

Also Known As: GuLoader malware
Damage level: Severe

What is "ACHIVA email virus"?

After analyzing this email, we learned that threat actors use it to trick people into believing that they have received an email from the sales department of a company located in Vietnam. Their goal is to trick recipients into opening a malicious attachment. That attachment is used to distribute GuLoader malware.

ACHIVA malware-spreading email

More about the ACHIVA email virus

This email requests recipients to quote their "best price". It states that the file attached to it is a request for quotation. Additionally, threat actors included a telephone number, email address, and company name (Achiva) to make the letter look more credible. The email contains an attachment named "RFQ#569823_345785TKH.GZ" (its name may vary).

That attachment is an archive file containing an executable file named "damage goods and new order.exe" (its name may also vary). Opening that executable file infects a computer with GuLoader malware. GuLoader is used to drop/distribute Remote Access Trojans (RATs) and other Trojans.

Usually, threat actors use RATs to steal sensitive information (e.g., passwords, credit card details), download files stored on a computer, access a microphone, or camera, and (or) execute other malware (e.g., ransomware, cryptocurrency miners).

Threat Summary:
Name GuLoader malware
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Hoax Recipients are supposed to review an RFQ (request for quotation)
Attachment(s) RFQ#569823_345785TKH.GZ  (its name may vary)
Detection Names (damage goods and new order.exe) Avast (NSIS:InjectorX-gen [Trj]), Combo Cleaner (Trojan.GenericKD.61407260), ESET-NOD32 (NSIS/Injector.BEP), Kaspersky (HEUR:Trojan-Downloader.Win32.Agent.gen), Microsoft (Trojan:Win32/GuLoader.SSS!MTB), Full List Of Detections (VirusTotal)
Symptoms Trojans are designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine.
Payload GuLoader
Distribution methods Infected email attachments, malicious online advertisements, social engineering, software 'cracks'.
Damage Stolen passwords and banking information, identity theft, the victim's computer added to a botnet.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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More about the ACHIVA email virus

Typically, emails containing malicious attachments or links are disguised as official/important/urgent letters from legitimate companies or other entities. Threat actors behind them aim to trick recipients into downloading and executing malware. Pretty often, these emails contain real logos, addresses, phone numbers, etc.

Examples of similar emails are "FedEx Corporation Email Virus", "SIDDHIVINAYAK Email Virus", and "Chc Energy Email Virus".

How did "ACHIVA email virus" infect my computer?

Recipients infect computers via malicious attachments or links received via email. In this case, computers become infected after executing an executable file extracted from a GZ archive file attached to an email. In other cases, threat actors send malicious MS Office, PDF documents, ISO files, JavaScript files, and other files.

How to avoid installation of malware?

Do not trust irrelevant emails sent from suspicious (and unknown) addresses. Opening links or attachments in such emails can cause computer infections. Download software (and files) from official pages and stores. Do not use unofficial pages, third-party downloaders, free file hosting sites, etc., to download them.

Never use unofficial tools to update or activate the software. Update and activate the installed software with tools/functions provided by the official developers. Keep the operating system (and installed software) up to date. If you've already opened "ACHIVA email virus" attachment, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the email:

Subject: RFQ #569823_345785TKH

Good Day Sir/Madam,

Attached is our RFQ.
Please quote your best price
We are very interested in buying. I would appreciate it if you can send me the price of a unit as well as discount for bulk orders
I need to make a decision in the next few days, so it is important that I get this information Find the atteched file and quote
Waiting for your reply

Ms Vân

Support sales
Tell: (+84)0983.223.139 –

Email : sales02@achiva.com.vn


Add:  2L, Hoang Hoa Tham St, Thuy Khue Ward,Tay Ho Dist,Hanoi

VPHN : Ngõ 604 Ngọc Thụy- Long Biên- Hà Nội.
Website: www.achiva.com.vn

Detection names for the malicious executable:

achiva email virus detections

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Types of malicious emails:

Phishing email icon Phishing Emails

Most commonly, cybercriminals use deceptive emails to trick Internet users into giving away their sensitive private information, for example, login information for various online services, email accounts, or online banking information.

Such attacks are called phishing. In a phishing attack, cybercriminals usually send an email message with some popular service logo (for example, Microsoft, DHL, Amazon, Netflix), create urgency (wrong shipping address, expired password, etc.), and place a link which they hope their potential victims will click on.

After clicking the link presented in such email message, victims are redirected to a fake website that looks identical or extremely similar to the original one. Victims are then asked to enter their password, credit card details, or some other information that gets stolen by cybercriminals.

Email-virus icon Emails with Malicious Attachments

Another popular attack vector is email spam with malicious attachments that infect users' computers with malware. Malicious attachments usually carry trojans that are capable of stealing passwords, banking information, and other sensitive information.

In such attacks, cybercriminals' main goal is to trick their potential victims into opening an infected email attachment. To achieve this goal, email messages usually talk about recently received invoices, faxes, or voice messages.

If a potential victim falls for the lure and opens the attachment, their computers get infected, and cybercriminals can collect a lot of sensitive information.

While it's a more complicated method to steal personal information (spam filters and antivirus programs usually detect such attempts), if successful, cybercriminals can get a much wider array of data and can collect information for a long period of time.

Sextortion email icon Sextortion Emails

This is a type of phishing. In this case, users receive an email claiming that a cybercriminal could access the webcam of the potential victim and has a video recording of one's masturbation.

To get rid of the video, victims are asked to pay a ransom (usually using Bitcoin or another cryptocurrency). Nevertheless, all of these claims are false - users who receive such emails should ignore and delete them.

How to spot a malicious email?

While cyber criminals try to make their lure emails look trustworthy, here are some things that you should look for when trying to spot a phishing email:

  • Check the sender's ("from") email address: Hover your mouse over the "from" address and check if it's legitimate. For example, if you received an email from Microsoft, be sure to check if the email address is @microsoft.com and not something suspicious like @m1crosoft.com, @microsfot.com, @account-security-noreply.com, etc.
  • Check for generic greetings: If the greeting in the email is "Dear user", "Dear @youremail.com", "Dear valued customer", this should raise suspiciousness. Most commonly, companies call you by your name. Lack of this information could signal a phishing attempt.
  • Check the links in the email: Hover your mouse over the link presented in the email, if the link that appears seems suspicious, don't click it. For example, if you received an email from Microsoft and the link in the email shows that it will go to firebasestorage.googleapis.com/v0... you shouldn't trust it. It's best not to click any links in the emails but to visit the company website that sent you the email in the first place.
  • Don't blindly trust email attachments: Most commonly, legitimate companies will ask you to log in to their website and to view any documents there; if you received an email with an attachment, it's a good idea to scan it with an antivirus application. Infected email attachments are a common attack vector used by cybercriminals.

To minimise the risk of opening phishing and malicious emails we recommend using Combo Cleaner Antivirus for Windows

Example of a spam email:

Example of an email spam

What to do if you fell for an email scam?

  • If you clicked on a link in a phishing email and entered your password - be sure to change your password as soon as possible. Usually, cybercriminals collect stolen credentials and then sell them to other groups that use them for malicious purposes. If you change your password in a timely manner, there's a chance that criminals won't have enough time to do any damage.
  • If you entered your credit card information - contact your bank as soon as possible and explain the situation. There's a good chance that you will need to cancel your compromised credit card and get a new one.
  • If you see any signs of identity theft - you should immediately contact the Federal Trade Commission. This institution will collect information about your situation and create a personal recovery plan.
  • If you opened a malicious attachment - your computer is probably infected, you should scan it with a reputable antivirus application. For this purpose, we recommend using Combo Cleaner Antivirus for Windows.
  • Help other Internet users - report phishing emails to Anti-Phishing Working Group, FBI’s Internet Crime Complaint Center, National Fraud Information Center and U.S. Department of Justice.

Frequently Asked Questions (FAQ)

Why did I receive this email?

Typically, cybercriminals send the same letter to all addresses obtained after a data breach or in other ways. Either way, their emails are not personal.

I have downloaded and opened a file attached to this email, is my computer infected?

The file attached to this email is an archive (GZ) file. It cannot infect a computer. However, an executable file within that archive file can. If you executed that file, your computer is already infected with GuLoader.

I have read the email but didn't open the attachment, is my computer infected?

No, it is harmless to open emails. Recipients cannot infect computers without opening malicious files or links in emails.

Will Combo Cleaner remove malware infections that were present in email attachment?

Yes, Combo Cleaner can detect and eliminate almost all known malware. When computers are infected with high-end malware, they must be scanned using a full system scan. Typically, malware of this kind hides deep in the system.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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