General

  • Target

    c4579c723a1dc34b48b4684b6d05e1902ac28d007efcb3d96958a92ed963a94f

  • Size

    1.8MB

  • Sample

    240531-2c59aaff6t

  • MD5

    d90dc86c07c652736ef253bda10ebdb7

  • SHA1

    8f00555f5f07d01fa443b8cd192d526aea6657d2

  • SHA256

    c4579c723a1dc34b48b4684b6d05e1902ac28d007efcb3d96958a92ed963a94f

  • SHA512

    b5305f4153b972f4e82752fabfe40795154f7ec85a67d70d27839b47299020362a2ff51287c516895ef0690ca791ac1e6ac5e8c06ace34a71876a054aa23611a

  • SSDEEP

    49152:QPlMGxzd7loa9wnz25tRb4zDbPIY3RjtIspMYGzL:QPlMIoa9az2tb4zwYBj6Ye

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://94.103.188.126/jerry/putty.zip

Extracted

Family

amadey

Version

4.21

Botnet

0e6740

C2

http://147.45.47.155

Attributes
  • install_dir

    9217037dc9

  • install_file

    explortu.exe

  • strings_key

    8e894a8a4a3d0da8924003a561cfb244

  • url_paths

    /ku4Nor9/index.php

rc4.plain

Extracted

Family

amadey

Version

4.21

Botnet

49e482

C2

http://147.45.47.70

Attributes
  • install_dir

    1b29d73536

  • install_file

    axplont.exe

  • strings_key

    4d31dd1a190d9879c21fac6d87dc0043

  • url_paths

    /tr8nomy/index.php

rc4.plain

Extracted

Family

risepro

C2

147.45.47.126:58709

Extracted

Family

redline

Botnet

@LOGSCLOUDYT_BOT

C2

185.172.128.33:8970

Extracted

Family

redline

Botnet

1

C2

185.215.113.67:40960

Extracted

Family

stealc

Botnet

zzvv

C2

http://23.88.106.134

Attributes
  • url_path

    /c73eed764cc59dcb.php

Extracted

Family

asyncrat

Version

AsyncRAT

Botnet

Fresh

C2

pepecasas123.net:4608

Mutex

AsyncMutex_5952

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

AsyncRAT

Botnet

Fresh run

C2

pepecasas123.net:4609

Mutex

AsyncMutex_2952

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      c4579c723a1dc34b48b4684b6d05e1902ac28d007efcb3d96958a92ed963a94f

    • Size

      1.8MB

    • MD5

      d90dc86c07c652736ef253bda10ebdb7

    • SHA1

      8f00555f5f07d01fa443b8cd192d526aea6657d2

    • SHA256

      c4579c723a1dc34b48b4684b6d05e1902ac28d007efcb3d96958a92ed963a94f

    • SHA512

      b5305f4153b972f4e82752fabfe40795154f7ec85a67d70d27839b47299020362a2ff51287c516895ef0690ca791ac1e6ac5e8c06ace34a71876a054aa23611a

    • SSDEEP

      49152:QPlMGxzd7loa9wnz25tRb4zDbPIY3RjtIspMYGzL:QPlMIoa9az2tb4zwYBj6Ye

    • Amadey

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

    • AsyncRat

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

    • 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.

    • Modifies firewall policy service

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • RedLine

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

    • RedLine payload

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • Stealc

      Stealc is an infostealer written in C++.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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 data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • 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.

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks