Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    26/04/2024, 03:34

General

  • Target

    e4bf167612708d2a5705762a4a92c1d438d2c749c96a8db74ca47ac912f87fb6.exe

  • Size

    1.8MB

  • MD5

    5535f432a7681cd4351a8e138bdbf3c4

  • SHA1

    1267f722924f247652d2a6680877c7bc05761517

  • SHA256

    e4bf167612708d2a5705762a4a92c1d438d2c749c96a8db74ca47ac912f87fb6

  • SHA512

    c9c825dc92154072054aab7cae034fe0b39e06ca8a19269589259e0b8ab73b2cc824b554b014a3931bc141c467cb16cf8d897cf59e9b48a827a64dae9202aa5e

  • SSDEEP

    49152:Pd/xREYfjcm31fb1N74gZBxSjg0ewqaP:PfREYr33xbT74KBwAwj

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.

  • 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\e4bf167612708d2a5705762a4a92c1d438d2c749c96a8db74ca47ac912f87fb6.exe
    "C:\Users\Admin\AppData\Local\Temp\e4bf167612708d2a5705762a4a92c1d438d2c749c96a8db74ca47ac912f87fb6.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:236
  • 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
    • Suspicious use of WriteProcessMemory
    PID:4308
    • 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:3140
      • 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:1540
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:2548
          • 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\017659663955_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4988
      • 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:540

    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

            5535f432a7681cd4351a8e138bdbf3c4

            SHA1

            1267f722924f247652d2a6680877c7bc05761517

            SHA256

            e4bf167612708d2a5705762a4a92c1d438d2c749c96a8db74ca47ac912f87fb6

            SHA512

            c9c825dc92154072054aab7cae034fe0b39e06ca8a19269589259e0b8ab73b2cc824b554b014a3931bc141c467cb16cf8d897cf59e9b48a827a64dae9202aa5e

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zq4zt0tk.jqv.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/236-7-0x0000000005190000-0x0000000005191000-memory.dmp

            Filesize

            4KB

          • memory/236-8-0x00000000051A0000-0x00000000051A1000-memory.dmp

            Filesize

            4KB

          • memory/236-0-0x0000000000950000-0x0000000000E04000-memory.dmp

            Filesize

            4.7MB

          • memory/236-6-0x00000000051F0000-0x00000000051F1000-memory.dmp

            Filesize

            4KB

          • memory/236-5-0x00000000051B0000-0x00000000051B1000-memory.dmp

            Filesize

            4KB

          • memory/236-9-0x0000000005210000-0x0000000005211000-memory.dmp

            Filesize

            4KB

          • memory/236-14-0x0000000000950000-0x0000000000E04000-memory.dmp

            Filesize

            4.7MB

          • memory/236-3-0x00000000051C0000-0x00000000051C1000-memory.dmp

            Filesize

            4KB

          • memory/236-4-0x00000000051D0000-0x00000000051D1000-memory.dmp

            Filesize

            4KB

          • memory/236-2-0x0000000000950000-0x0000000000E04000-memory.dmp

            Filesize

            4.7MB

          • memory/236-1-0x0000000077516000-0x0000000077518000-memory.dmp

            Filesize

            8KB

          • memory/4308-27-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-75-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-22-0x0000000005390000-0x0000000005391000-memory.dmp

            Filesize

            4KB

          • memory/4308-21-0x0000000005350000-0x0000000005351000-memory.dmp

            Filesize

            4KB

          • memory/4308-19-0x0000000005360000-0x0000000005361000-memory.dmp

            Filesize

            4KB

          • memory/4308-25-0x00000000053B0000-0x00000000053B1000-memory.dmp

            Filesize

            4KB

          • memory/4308-26-0x00000000053A0000-0x00000000053A1000-memory.dmp

            Filesize

            4KB

          • memory/4308-24-0x0000000005340000-0x0000000005341000-memory.dmp

            Filesize

            4KB

          • memory/4308-20-0x0000000005370000-0x0000000005371000-memory.dmp

            Filesize

            4KB

          • memory/4308-83-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-18-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-82-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-81-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-80-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-52-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-79-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-78-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-77-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-61-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-62-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-17-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-74-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4308-23-0x0000000005330000-0x0000000005331000-memory.dmp

            Filesize

            4KB

          • memory/4308-76-0x0000000000280000-0x0000000000734000-memory.dmp

            Filesize

            4.7MB

          • memory/4988-60-0x00007FFE31340000-0x00007FFE31E02000-memory.dmp

            Filesize

            10.8MB

          • memory/4988-54-0x000001B46E130000-0x000001B46E13A000-memory.dmp

            Filesize

            40KB

          • memory/4988-53-0x000001B46E250000-0x000001B46E262000-memory.dmp

            Filesize

            72KB

          • memory/4988-51-0x000001B46DE50000-0x000001B46DE60000-memory.dmp

            Filesize

            64KB

          • memory/4988-50-0x000001B46DE50000-0x000001B46DE60000-memory.dmp

            Filesize

            64KB

          • memory/4988-49-0x00007FFE31340000-0x00007FFE31E02000-memory.dmp

            Filesize

            10.8MB

          • memory/4988-40-0x000001B46DE20000-0x000001B46DE42000-memory.dmp

            Filesize

            136KB