ASEC Weekly Malware Statistics (February 6th, 2023 – February 12th, 2023)

The ASEC analysis team uses the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from February 6th, 2023 (Monday) to February 12th, 2023 (Sunday).

For the main category, downloader ranked top with 54.7%, followed by backdoor with 27.7%, Infostealer with 12.8%, ransomware with 4.6%, and CoinMiner with 0.1%.

Top 1 – Amadey

This week, Amadey Bot ranked first place with 43.9%. 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://62.204.41[.]4/Gol478Ns/index.php
  • hxxp://62.204.41[.]248/Gol478Ns/index.php
  • hxxp://193.233.20[.]2/Bn89hku/index.php
  • hxxp://62.204.41[.]5/Bu58Ngs/index.php

Top 2 – RedLine

RedLine malware ranked second place with 15.7%. 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://193.233.20[.]12:4132
  • hxxp://62.204.41[.]170:4172
  • hxxp://45.15.157[.].156:10562
  • hxxp://195.2.78[.]49:6074

Top 3 – BeamWinHTTP

BeamWinHTTP is a downloader malware that ranked third place with 7.9%. The malware is distributed via malware disguised as PUP installer. When it is 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://45.12.253[.]56/advertisting/plus.php
  • hxxp://45.12.253[.]51/publisher.php
  • hxxp://45.139.105[.]171/itsnotmalware/count.php

Top 4 – njRAT

njRAT is a RAT malware that can steal information including keylogging and also perform commands from the threat actor. This week, it ranked fourth place with 6.1%. Recently identified njRATs are usually distributed through phishing such as on Facebook advertisement pages.

  • mohammed1990.ddns[.]net
  • xiiiolympus.zapto[.]org:3000
  • 3.125.223[.]134:14504
  • rif-nador123333333.zapto[.]org:1177
  • gololosd.ddns[.]net:9090

njRATs tend to be in disguise as normal files. Many of these are illegal programs such as game hacks and cracked programs, and there are some cases where the malware is included in illegally-shared games.

  • JJS-UI.exe
  • modest-menu.exe
  • GTA san andreas.exe
  • GikssLoader.exe
  • Gmail Hacker Password 2016.exe
  • minecraft.exe
  • Srilankan.exe
  • Flash player.exe
  • JavaUpdateShell.exe

Top 5 – Formbook

Formbook is an Infostealer that ranked fifth place with 5.0%.

Like other Infostealers, it is mainly distributed through spam emails. The distributed file names are close to each other.

  • overdue settlement.exe
  • Order specification.exe
  • ruficoccin.exe
  • firefox.exe

As Formbook is injected into normal processes (one is a running explorer.exe and the other is in system32), the malicious behaviors are performed by these normal processes. Besides user credentials in the web browser, the malware can steal various information through keylogging, clipboard grabbing, and web browser form grabbing.

Below is the list of confirmed C&C server URLs of Formbook.

  • hxxp://www.fatsecing[.]xyz/ippd/
  • hxxp://www.potifitz[.]site/gapq/
  • hxxp://www.lobefood[.]site/rder/
  • hxxp://www.pushgit[.]site/rd0h/
  • hxxp://www.ytorly[.]xyz/d03s/
  • hxxp://
  • hxxp://www.hurloic[.]xyz/gg62/
  • hxxp://www.hexopb[.]xyz/sz17/
  • hxxp://www.koyesses[.]site/xprq/
  • hxxp://www.cahxary[.]site/urg8/
  • hxxp://www.wordybag[.]online/nes8/
  • hxxp://www.genmanty[.]site/g44n/
  • hxxp://www.seculw[.]xyz/de12/
  • hxxp://www.martcash[.]website/fuo8/

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