Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27/03/2024, 01:51

General

  • Target
    9c1751ba73fe53ed9385f24750212c6e785843e4c63dbafec8f95d3e6a5088ef.exe
  • Size 1.8MB
  • Sample240327-cabjfscf8w
  • SHA256 9c1751ba73fe53ed9385f24750212c6e785843e4c63dbafec8f95d3e6a5088ef
  • 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 WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c1751ba73fe53ed9385f24750212c6e785843e4c63dbafec8f95d3e6a5088ef.exe
    "C:\Users\Admin\AppData\Local\Temp\9c1751ba73fe53ed9385f24750212c6e785843e4c63dbafec8f95d3e6a5088ef.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:1844
  • 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:1012
    • 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:5040
      • 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:2892
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:2192
          • 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\637591879962_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3472
      • 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:1612

    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 9c1751ba73fe53ed9385f24750212c6e785843e4c63dbafec8f95d3e6a5088ef
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_skatcrxs.ixd.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_skatcrxs.ixd.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/1012-27-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-22-0x0000000005250000-0x0000000005251000-memory.dmp

          memory/1012-84-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-83-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-82-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-81-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-80-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-79-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-17-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-18-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-20-0x0000000005270000-0x0000000005271000-memory.dmp

          memory/1012-19-0x0000000005280000-0x0000000005281000-memory.dmp

          memory/1012-21-0x00000000052B0000-0x00000000052B1000-memory.dmp

          memory/1012-62-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-23-0x0000000005260000-0x0000000005261000-memory.dmp

          memory/1012-24-0x0000000005290000-0x0000000005291000-memory.dmp

          memory/1012-25-0x00000000052D0000-0x00000000052D1000-memory.dmp

          memory/1012-78-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-77-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-28-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-76-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-29-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-26-0x00000000052C0000-0x00000000052C1000-memory.dmp

          memory/1012-75-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1012-74-0x0000000000720000-0x0000000000BD5000-memory.dmp

          memory/1844-2-0x0000000000CF0000-0x00000000011A5000-memory.dmp

          memory/1844-14-0x0000000000CF0000-0x00000000011A5000-memory.dmp

          memory/1844-6-0x0000000005890000-0x0000000005891000-memory.dmp

          memory/1844-7-0x00000000058A0000-0x00000000058A1000-memory.dmp

          memory/1844-8-0x0000000005920000-0x0000000005921000-memory.dmp

          memory/1844-9-0x0000000005910000-0x0000000005911000-memory.dmp

          memory/1844-1-0x00000000777F6000-0x00000000777F8000-memory.dmp

          memory/1844-3-0x00000000058C0000-0x00000000058C1000-memory.dmp

          memory/1844-4-0x00000000058B0000-0x00000000058B1000-memory.dmp

          memory/1844-5-0x00000000058F0000-0x00000000058F1000-memory.dmp

          memory/1844-0-0x0000000000CF0000-0x00000000011A5000-memory.dmp

          memory/3472-50-0x000002C964560000-0x000002C964582000-memory.dmp

          memory/3472-51-0x00007FF9263E0000-0x00007FF926EA2000-memory.dmp

          memory/3472-53-0x000002C9644B0000-0x000002C9644C0000-memory.dmp

          memory/3472-52-0x000002C9644B0000-0x000002C9644C0000-memory.dmp

          memory/3472-61-0x00007FF9263E0000-0x00007FF926EA2000-memory.dmp

          memory/3472-55-0x000002C964550000-0x000002C96455A000-memory.dmp

          memory/3472-54-0x000002C9646B0000-0x000002C9646C2000-memory.dmp