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Analysis

  • max time kernel
    145s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/05/2024, 22:42

General

  • Target

    chrosha.exe

  • Size

    1.8MB

  • MD5

    73d73c48859fc7aa4fd78d9a57f859d6

  • SHA1

    c1f71ea0692d97c653ff5a5ecbc03fd02173fe05

  • SHA256

    d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876

  • SHA512

    f0634be539582016c03e83f3ca58d613fc16abcc0a9c320321f455234a8f2dc1c199fc52187abac5e4cbbe7b7907afdaa89813f50cbecd611f7e870ee7f8e979

  • SSDEEP

    24576:Snk5YKXHSuRlxqOd8pF2h99TqJWVs/ae2c01R/QTS5I0aQrnnuls5py6sDya:0YNxd7h9hqJ2s/ae10e0aiCKrsu

Malware Config

Extracted

Family

amadey

Version

4.17

Botnet

090bb7

C2

http://193.233.132.167

Attributes
  • install_dir

    4d0ab15804

  • install_file

    chrosha.exe

  • strings_key

    1a9519d7b465e1f4880fa09a6162d768

  • url_paths

    /enigma/index.php

rc4.plain

Signatures

  • Amadey

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\chrosha.exe
    "C:\Users\Admin\AppData\Local\Temp\chrosha.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1488
  • C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
    C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Executes dropped EXE
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:3244

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe

    Filesize

    1.8MB

    MD5

    73d73c48859fc7aa4fd78d9a57f859d6

    SHA1

    c1f71ea0692d97c653ff5a5ecbc03fd02173fe05

    SHA256

    d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876

    SHA512

    f0634be539582016c03e83f3ca58d613fc16abcc0a9c320321f455234a8f2dc1c199fc52187abac5e4cbbe7b7907afdaa89813f50cbecd611f7e870ee7f8e979

  • memory/1488-0-0x0000000000D90000-0x0000000001243000-memory.dmp

    Filesize

    4.7MB

  • memory/1488-1-0x0000000077CC4000-0x0000000077CC6000-memory.dmp

    Filesize

    8KB

  • memory/1488-2-0x0000000000D91000-0x0000000000DBF000-memory.dmp

    Filesize

    184KB

  • memory/1488-3-0x0000000000D90000-0x0000000001243000-memory.dmp

    Filesize

    4.7MB

  • memory/1488-5-0x0000000000D90000-0x0000000001243000-memory.dmp

    Filesize

    4.7MB

  • memory/1488-10-0x0000000000D90000-0x0000000001243000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-16-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-20-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-15-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-13-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-17-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-18-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-19-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-14-0x0000000000331000-0x000000000035F000-memory.dmp

    Filesize

    184KB

  • memory/3244-21-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-22-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-23-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-24-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-25-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-26-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB

  • memory/3244-27-0x0000000000330000-0x00000000007E3000-memory.dmp

    Filesize

    4.7MB