General

  • Target

    tmp

  • Size

    413KB

  • Sample

    240326-brvszsbc54

  • MD5

    d467222c3bd563cb72fa49302f80b079

  • SHA1

    9335e2a36abb8309d8a2075faf78d66b968b2a91

  • SHA256

    fedb08b3ec7034a15e9dee7ed4dec1a854fb78e74285e1ee05c90f9e9e4f8b3e

  • SHA512

    484b6c427e28193ddb73dd7062e2bfbd132ddc72ce4811bfe08784669de30e4b92bc27140373f62a4ce651401000a3c505188620c43da410bf6b0799a0791fa7

  • SSDEEP

    6144:0UorLrzMYSnDyTtDOYtf3J7+YZIPcrPJruPWeX2/e1Cw+GOpumhauZef6P5rwmx:0vcYZD17DMPWev1Cb3umhauZef6a

Malware Config

Extracted

Family

amadey

Version

4.17

C2

http://193.233.132.167

Attributes
  • install_dir

    4d0ab15804

  • install_file

    chrosha.exe

  • strings_key

    1a9519d7b465e1f4880fa09a6162d768

  • url_paths

    /enigma/index.php

rc4.plain

Extracted

Family

amadey

Version

4.17

C2

http://193.233.132.167

Attributes
  • strings_key

    1a9519d7b465e1f4880fa09a6162d768

  • url_paths

    /enigma/index.php

rc4.plain

Targets

    • Target

      tmp

    • Size

      413KB

    • MD5

      d467222c3bd563cb72fa49302f80b079

    • SHA1

      9335e2a36abb8309d8a2075faf78d66b968b2a91

    • SHA256

      fedb08b3ec7034a15e9dee7ed4dec1a854fb78e74285e1ee05c90f9e9e4f8b3e

    • SHA512

      484b6c427e28193ddb73dd7062e2bfbd132ddc72ce4811bfe08784669de30e4b92bc27140373f62a4ce651401000a3c505188620c43da410bf6b0799a0791fa7

    • SSDEEP

      6144:0UorLrzMYSnDyTtDOYtf3J7+YZIPcrPJruPWeX2/e1Cw+GOpumhauZef6P5rwmx:0vcYZD17DMPWev1Cb3umhauZef6a

    • Amadey

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

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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 web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • UPX packed file

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

    • 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.

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks