Analysis

  • max time kernel
    149s
  • max time network
    161s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/04/2024, 19:54

General

  • Target
    5e584700732e4246811ba318d4443bc7dfa55db23ce9ac55a2fd2571d1552b7e.exe
  • Size 1.8MB
  • Sample240404-ymm9nshd92
  • SHA256 5e584700732e4246811ba318d4443bc7dfa55db23ce9ac55a2fd2571d1552b7e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • amadey

Version
  • 4.17

C2
  • http://185.215.113.32

Attributes
  • install_dir

    00c07260dc

  • install_file

    explorgu.exe

  • strings_key

    461809bd97c251ba0c0c8450c7055f1d

  • url_paths

    /yandex/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
  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • 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.

  • Loads dropped DLL 3 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads local data of messenger clients 2 TTPs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5e584700732e4246811ba318d4443bc7dfa55db23ce9ac55a2fd2571d1552b7e.exe
    "C:\Users\Admin\AppData\Local\Temp\5e584700732e4246811ba318d4443bc7dfa55db23ce9ac55a2fd2571d1552b7e.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
    • Suspicious use of FindShellTrayWindow
    PID:3276
  • C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
    C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.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
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4640
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:848
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:4076
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\472529282816_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3556
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
        2⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        PID:3268

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          explorgu.exe

          • Path C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
          • Size 1.8MB
          • SHA256 5e584700732e4246811ba318d4443bc7dfa55db23ce9ac55a2fd2571d1552b7e
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_m340jsdb.55w.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m340jsdb.55w.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          clip64.dll

          • Path C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll
          • Size 109KB
          • SHA256 8d31b39170909595b518b1a03e9ec950540fabd545ed14817cac5c84b91599ee
          • MD5 SHA1 SHA512 SSDEEP

          cred64.dll

          • Path C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll
          • Size 1.2MB
          • SHA256 b4588feacc183cd5a089f9bb950827b75df04bd5a6e67c95ff258e4a34aa0d72
          • MD5 SHA1 SHA512 SSDEEP

          memory/1240-27-0x0000000004F70000-0x0000000004F71000-memory.dmp

          memory/1240-63-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-83-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-82-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-81-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-80-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-79-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-78-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-17-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-18-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-19-0x0000000004F20000-0x0000000004F21000-memory.dmp

          memory/1240-21-0x0000000004F10000-0x0000000004F11000-memory.dmp

          memory/1240-20-0x0000000004F30000-0x0000000004F31000-memory.dmp

          memory/1240-22-0x0000000004F60000-0x0000000004F61000-memory.dmp

          memory/1240-23-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

          memory/1240-24-0x0000000004F00000-0x0000000004F01000-memory.dmp

          memory/1240-25-0x0000000004F50000-0x0000000004F51000-memory.dmp

          memory/1240-26-0x0000000004F80000-0x0000000004F81000-memory.dmp

          memory/1240-77-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-28-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-76-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-75-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-62-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/1240-52-0x0000000000260000-0x0000000000712000-memory.dmp

          memory/3276-5-0x00000000057E0000-0x00000000057E1000-memory.dmp

          memory/3276-14-0x0000000000C00000-0x00000000010B2000-memory.dmp

          memory/3276-1-0x00000000775B6000-0x00000000775B8000-memory.dmp

          memory/3276-7-0x0000000005790000-0x0000000005791000-memory.dmp

          memory/3276-8-0x0000000005800000-0x0000000005801000-memory.dmp

          memory/3276-9-0x00000000057F0000-0x00000000057F1000-memory.dmp

          memory/3276-6-0x0000000005780000-0x0000000005781000-memory.dmp

          memory/3276-2-0x0000000000C00000-0x00000000010B2000-memory.dmp

          memory/3276-4-0x00000000057A0000-0x00000000057A1000-memory.dmp

          memory/3276-3-0x00000000057B0000-0x00000000057B1000-memory.dmp

          memory/3276-0-0x0000000000C00000-0x00000000010B2000-memory.dmp

          memory/3556-53-0x0000029AEB580000-0x0000029AEB590000-memory.dmp

          memory/3556-50-0x00007FF95D250000-0x00007FF95DD12000-memory.dmp

          memory/3556-51-0x0000029AEB580000-0x0000029AEB590000-memory.dmp

          memory/3556-61-0x00007FF95D250000-0x00007FF95DD12000-memory.dmp

          memory/3556-55-0x0000029AEB600000-0x0000029AEB60A000-memory.dmp

          memory/3556-54-0x0000029AEB710000-0x0000029AEB722000-memory.dmp

          memory/3556-49-0x0000029AEB590000-0x0000029AEB5B2000-memory.dmp