General

  • Target

    c2f479cb67a5e9ff6c7513a3822c26915e2d101fc50f5fd61f261beb222b4b27

  • Size

    1.9MB

  • Sample

    240602-cx5qtagc75

  • MD5

    b24eef968468841cbc5e71f12b4aaded

  • SHA1

    eb7b420c6a0364b0b1fb94adecad95bd4501260a

  • SHA256

    c2f479cb67a5e9ff6c7513a3822c26915e2d101fc50f5fd61f261beb222b4b27

  • SHA512

    8bd42d4c0ddd21e59a8affa0996757673e5d408ceebc370cbe66d4bf6237ddf539f69e211d10b1ea0cfecae496526b7af51ba95f7959275184ebc690cbb07b23

  • SSDEEP

    49152:ajUuNM+R7mrmZWrBf9NE5X7bHiV/8MgGO:ajVNM+R78cuxgt2V/jg3

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://94.103.188.126/jerry/putty.zip

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

asyncrat

Version

AsyncRAT

Botnet

Fresh

C2

pepecasas123.net:4608

Mutex

AsyncMutex_5952

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

smokeloader

Version

2022

C2

http://dbfhns.in/tmp/index.php

http://guteyr.cc/tmp/index.php

http://greendag.ru/tmp/index.php

http://lobulraualov.in.net/tmp/index.php

rc4.i32
rc4.i32

Extracted

Family

smokeloader

Botnet

pub1

Targets

    • Target

      c2f479cb67a5e9ff6c7513a3822c26915e2d101fc50f5fd61f261beb222b4b27

    • Size

      1.9MB

    • MD5

      b24eef968468841cbc5e71f12b4aaded

    • SHA1

      eb7b420c6a0364b0b1fb94adecad95bd4501260a

    • SHA256

      c2f479cb67a5e9ff6c7513a3822c26915e2d101fc50f5fd61f261beb222b4b27

    • SHA512

      8bd42d4c0ddd21e59a8affa0996757673e5d408ceebc370cbe66d4bf6237ddf539f69e211d10b1ea0cfecae496526b7af51ba95f7959275184ebc690cbb07b23

    • SSDEEP

      49152:ajUuNM+R7mrmZWrBf9NE5X7bHiV/8MgGO:ajVNM+R78cuxgt2V/jg3

    • 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#.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Modifies firewall policy service

    • PrivateLoader

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

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

    • Windows security bypass

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Sets service image path in registry

    • 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.

    • 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

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • 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

    • Drops Chrome extension

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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.

    • Maps connected drives based on registry

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

    • 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