ASEC Weekly Malware Statistics (November 14th, 2022 – November 20th, 2022)

The ASEC analysis team is using the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from November 14th, 2022 (Monday) to November 20th (Sunday).

For the main category, downloader ranked top with 53.2%, followed by backdoor with 24.1%, Infostealer with 21.1%, ransomware with 1.0%, CoinMiner with 0.4%, and banking malware with 0.2%.

Top 1 – BeamWinHTTP

BeamWinHTTP is a downloader malware that ranked top with 30.5%. The malware is distributed via malware disguised as PUP installer. When executed, it installs PUP malware Garbage Cleaner and can download and install additional malware at the same time.

The confirmed C&C server URLs are as follows.

  • hxxp://45.139.105[.]171/itsnotmalware/count.php
  • hxxp://kokoko-24[.]online/api/tracemap.php
  • hxxp://megalobster[.]ru/api/tracemap.php
  • hxxp://208.67.104[.]60/api/tracemap.php

Top 2 – RedLine

RedLine malware ranked second place with 11.5%. The malware steals various information such as web browsers, FTP clients, cryptocurrency wallets, and PC settings. It can also download additional malware by receiving commands from the C&C server. Like BeamWinHTTP, there have been numerous cases of RedLine being distributed under the disguise of a software crack file.

The following are the confirmed C&C server domains for RedLine:

  • hxxp://jalocliche[.]xyz
  • hxxp://62.204.41[.]141
  • hxxp://79.137.192[.]6
  • hxxp://45.138.74[.]121

Top 3 – AgentTesla

AgentTesla is an Infostealer that ranked third place with 10.4%. It leaks user credentials saved in web browsers, emails, and FTP clients.

Although it uses emails (a.k.a. SMTP protocol) to leak collected information, there are samples that used FTP or Discord API. The C&C information of recently collected samples is as follows.

  • SMTP Server :
    User :
    Password : G***(
    Receiver :
  • SMTP Server :
    User :
    Password : uo************oa
    Receiver :
  • SMTP Server :
    User :
    Password : MD********D

    Receiver :
  • SMTP Server :
    User :
    Password : georgie@syin********
    Receiver :

As most are distributed through spam emails disguised as invoices, shipment documents, and purchase orders, the file names contain such words shown above (Invoice, Shipment, and P.O. – Purchase Order). Multiple collected samples were disguised as files with extensions of pdf and xlsx.

  • Swift Copy – Advice info- Ref…….ice info- RefA1T323025543.exe
  • PI#2098275342 and PI#2098275347.exe
  • ContractTHX221001.pdf.exe
  • R1_QTN_CTL_ 09112022_Quote.exe
  • awb_shipping_documents_111120…….uments_111120220000000000.exe
  • mv Khosrov Bey.Q88.exe
  • Invoice_0014112022,jpeg.exe
  • Order 001.exe
  • Quotation-inquiry3033.PDF.exe

Top 4 – Amadey

This week, Amadey Bot ranked fourth place with 9.0%. Amadey is a downloader that can receive commands from the attacker to download additional malware, and when info-stealing modules are used, it can collect user credentials in the infected system.

Usually, Amadey is installed by SmokeLoader which is distributed in the disguise of normal programs and crack malware. In the recent days, however, Amadey is being distributed to corporate users through malicious document files attached to spam mails and being used to install LockBit ransomware.

The confirmed C&C server URLs are as follows.

  • hxxp://31.41.244[.]15/Mb1sDv3/index.php
  • hxxp://193.56.146[.]194/h49vlBP/index.php
  • hxxp://193.56.146[.]174/g84kvj4jck/index.php

Top 5 – Guloader

GuLoader, which ranked fifth place with 7.8%, is a downloader malware that downloads additional malware and runs it. It was packed with Visual Basic language in the past to bypass detection, but it is now distributed in a form of an NSIS installer. It used to be known as CloudEye but got the name GuLoader because Google Drive is frequently used as a download URL. In addition to Google Drive, various URLs such as One Drive from Microsoft can also be used.

  • hxxps://[.]com/uc?export=download&id=1FZy4Wcme4aPtuzm9ha19ta21V7fHFvd2
  • hxxps://[.]com/uc?export=download&id=1b0dxag1QqpX64iBQKUXrZusloWlwpZPH
  • hxxps://[.]com/uc?export=download&id=1S3rq6ZC5mBnGFxWap8ecfEYghn27qoMI
  • hxxps://[.]com/uc?export=download&id=1mPX–VLI8nLHni2-zDnKhg1LGpubGXyQ
  • hxxps://[.]com/uc?export=download&id=1gnMVJcI4QYIMtdP2M7dC9jKa9rj83yL3
  • hxxps://[.]com/uc?export=download&id=1zhJuivRWANMJVZgr1g_uXgmeNxXFaUTU
  • hxxps://[.]com/uc?export=download&id=1lNG1KNg0WHn_kF-bwiYPF4oQbyxs7OoV
  • hxxps://[.]com/uc?export=download&id=1KNuz08ruTwWTlLN_X8yn3c-HUv1y-T4a
  • hxxps://[.]com/uc?export=download&id=1TyqF50fOOkBiE-A5hWmIAA5h6gGEuCjE

Instead of being downloaded in a file form, GuLoader is downloaded on memory to avoid detection, and the downloaded file is encoded, not PE. It is then executed after being decoded in the memory, downloading malware such as infostealer (Formbook and AgentTesla) and RAT (Remcos and NanoCore).

As most are distributed through spam emails disguised as invoices, shipment documents, and purchase orders, the file names contain such words shown above (Invoice, Shipment, and P.O. – Purchase Order). Some samples have extensions disguised as document files such as pdf and xlsx or Auto CAD blueprint files such as dwg.

  • CHEQUE-NO-69540594.exe
  • HSBC Payment
  • list.order.exe
  • specification list.exe
  • outputA2C149F.exe
  • IMG-1911200011.exe
  • DAECHANG PO#3274800.exe

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