Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-03-2024 06:41

General

  • Target

    tmp.exe

  • Size

    413KB

  • 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

Signatures

  • Amadey

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

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • 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.

  • 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 13 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\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of FindShellTrayWindow
    PID:4292
  • C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
    C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4496
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1224
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:3168
          • 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\808065738166_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4384
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll, Main
        2⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        PID:3488
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1080

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        413KB

        MD5

        d467222c3bd563cb72fa49302f80b079

        SHA1

        9335e2a36abb8309d8a2075faf78d66b968b2a91

        SHA256

        fedb08b3ec7034a15e9dee7ed4dec1a854fb78e74285e1ee05c90f9e9e4f8b3e

        SHA512

        484b6c427e28193ddb73dd7062e2bfbd132ddc72ce4811bfe08784669de30e4b92bc27140373f62a4ce651401000a3c505188620c43da410bf6b0799a0791fa7

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yj5aponb.kxr.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll

        Filesize

        109KB

        MD5

        154c3f1334dd435f562672f2664fea6b

        SHA1

        51dd25e2ba98b8546de163b8f26e2972a90c2c79

        SHA256

        5f431129f97f3d56929f1e5584819e091bd6c854d7e18503074737fc6d79e33f

        SHA512

        1bca69bbcdb7ecd418769e9d4befc458f9f8e3cee81feb7316bb61e189e2904f4431e4cc7d291e179a5dec441b959d428d8e433f579036f763bbad6460222841

      • C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll

        Filesize

        1.2MB

        MD5

        f35b671fda2603ec30ace10946f11a90

        SHA1

        059ad6b06559d4db581b1879e709f32f80850872

        SHA256

        83e3df5bec15d5333935bea8b719a6d677e2fb3dc1cf9e18e7b82fd0438285c7

        SHA512

        b5fa27d08c64727cef7fdda5e68054a4359cd697df50d70d1d90da583195959a139066a6214531bbc5f20cd4f9bc1ca3e4244396547381291a6a1d2df9cf8705

      • memory/4384-18-0x0000019141970000-0x0000019141992000-memory.dmp

        Filesize

        136KB

      • memory/4384-28-0x00007FFC89D40000-0x00007FFC8A801000-memory.dmp

        Filesize

        10.8MB

      • memory/4384-29-0x00000191419A0000-0x00000191419B0000-memory.dmp

        Filesize

        64KB

      • memory/4384-30-0x00000191419A0000-0x00000191419B0000-memory.dmp

        Filesize

        64KB

      • memory/4384-31-0x0000019141ED0000-0x0000019141EE2000-memory.dmp

        Filesize

        72KB

      • memory/4384-32-0x0000019141A30000-0x0000019141A3A000-memory.dmp

        Filesize

        40KB

      • memory/4384-38-0x00007FFC89D40000-0x00007FFC8A801000-memory.dmp

        Filesize

        10.8MB