Analysis

  • max time kernel
    166s
  • max time network
    189s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28/03/2024, 02:27

General

  • Target
    91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.exe
  • Size 1.8MB
  • Sample240328-cxtnjsdb5v
  • SHA256 91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2
  • 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\91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.exe
    "C:\Users\Admin\AppData\Local\Temp\91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.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:4980
  • 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:1324
    • 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:2336
      • 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:2724
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:3996
          • 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\852399462405_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1428
      • 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:2428

    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 91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_slczuxhv.pej.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_slczuxhv.pej.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/1324-65-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-20-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-81-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-80-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-79-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-78-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-83-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-66-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-43-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-84-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-85-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-82-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-21-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-23-0x0000000004C80000-0x0000000004C81000-memory.dmp

          memory/1324-22-0x0000000004C90000-0x0000000004C91000-memory.dmp

          memory/1324-24-0x0000000004CC0000-0x0000000004CC1000-memory.dmp

          memory/1324-25-0x0000000004C60000-0x0000000004C61000-memory.dmp

          memory/1324-26-0x0000000004C70000-0x0000000004C71000-memory.dmp

          memory/1324-27-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

          memory/1324-29-0x0000000004CE0000-0x0000000004CE1000-memory.dmp

          memory/1324-28-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

          memory/1324-30-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1324-86-0x00000000007A0000-0x0000000000C5A000-memory.dmp

          memory/1428-64-0x00007FF839520000-0x00007FF839FE2000-memory.dmp

          memory/1428-58-0x000002A258D00000-0x000002A258D0A000-memory.dmp

          memory/1428-52-0x000002A258D10000-0x000002A258D32000-memory.dmp

          memory/1428-53-0x00007FF839520000-0x00007FF839FE2000-memory.dmp

          memory/1428-55-0x000002A258BD0000-0x000002A258BE0000-memory.dmp

          memory/1428-56-0x000002A258BD0000-0x000002A258BE0000-memory.dmp

          memory/1428-54-0x000002A258BD0000-0x000002A258BE0000-memory.dmp

          memory/1428-57-0x000002A258DA0000-0x000002A258DB2000-memory.dmp

          memory/4980-11-0x0000000004B30000-0x0000000004B31000-memory.dmp

          memory/4980-0-0x0000000000050000-0x000000000050A000-memory.dmp

          memory/4980-13-0x0000000000050000-0x000000000050A000-memory.dmp

          memory/4980-17-0x0000000000050000-0x000000000050A000-memory.dmp

          memory/4980-10-0x0000000004B40000-0x0000000004B41000-memory.dmp

          memory/4980-9-0x0000000004B10000-0x0000000004B11000-memory.dmp

          memory/4980-7-0x0000000004AB0000-0x0000000004AB1000-memory.dmp

          memory/4980-6-0x0000000004B20000-0x0000000004B21000-memory.dmp

          memory/4980-8-0x0000000004AC0000-0x0000000004AC1000-memory.dmp

          memory/4980-5-0x0000000004AD0000-0x0000000004AD1000-memory.dmp

          memory/4980-4-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

          memory/4980-3-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

          memory/4980-2-0x0000000000050000-0x000000000050A000-memory.dmp

          memory/4980-1-0x0000000077D96000-0x0000000077D98000-memory.dmp