Analysis

  • max time kernel
    123s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    07/12/2022, 10:33

General

  • Target
    file.exe
  • Size 323KB
  • Sample221207-mlh3sagg49
  • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • amadey

Version
  • 3.50

C2
  • 77.73.133.72/hfk3vK9/index.php

Signatures

  • Amadey

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

  • Detect Amadey credential stealer module 6 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads local data of messenger clients 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      "C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1308
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN gntuud.exe /TR "C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe" /F
        3⤵
        • Creates scheduled task(s)
        PID:1068
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll, Main
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • outlook_win_path
        PID:1108
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {D94092AC-9217-4A40-BEDF-9CF0A092D968} S-1-5-21-3406023954-474543476-3319432036-1000:VUIIVLGQ\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      2⤵
      • Executes dropped EXE
      PID:1824
    • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      2⤵
      • Executes dropped EXE
      PID:916

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        gntuud.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        gntuud.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        gntuud.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        gntuud.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        cred64.dll

        • Path C:\Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll
        • Size 126KB
        • SHA256 5cd41f164de6f783b7da82b5f6dbd49413eccd87cc7470f2004d58ca081fb0e0
        • MD5 SHA1 SHA512 SSDEEP

        gntuud.exe

        • Path \Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        gntuud.exe

        • Path \Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        • Size 323KB
        • SHA256 f2e3d6690bb14457ebd60228e74de5f6494bb3d438a23f6f8b80a4234ec61396
        • MD5 SHA1 SHA512 SSDEEP

        cred64.dll

        • Path \Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll
        • Size 126KB
        • SHA256 5cd41f164de6f783b7da82b5f6dbd49413eccd87cc7470f2004d58ca081fb0e0
        • MD5 SHA1 SHA512 SSDEEP

        cred64.dll

        • Path \Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll
        • Size 126KB
        • SHA256 5cd41f164de6f783b7da82b5f6dbd49413eccd87cc7470f2004d58ca081fb0e0
        • MD5 SHA1 SHA512 SSDEEP

        cred64.dll

        • Path \Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll
        • Size 126KB
        • SHA256 5cd41f164de6f783b7da82b5f6dbd49413eccd87cc7470f2004d58ca081fb0e0
        • MD5 SHA1 SHA512 SSDEEP

        cred64.dll

        • Path \Users\Admin\AppData\Roaming\f49dfc5e4e2508\cred64.dll
        • Size 126KB
        • SHA256 5cd41f164de6f783b7da82b5f6dbd49413eccd87cc7470f2004d58ca081fb0e0
        • MD5 SHA1 SHA512 SSDEEP

        memory/916-87-0x0000000000538000-0x0000000000557000-memory.dmp

        memory/916-89-0x0000000000538000-0x0000000000557000-memory.dmp

        memory/916-90-0x0000000000400000-0x000000000046E000-memory.dmp

        memory/952-62-0x0000000000400000-0x000000000046E000-memory.dmp

        memory/952-54-0x00000000008C8000-0x00000000008E7000-memory.dmp

        memory/952-55-0x0000000076941000-0x0000000076943000-memory.dmp

        memory/952-60-0x00000000008C8000-0x00000000008E7000-memory.dmp

        memory/952-61-0x0000000000600000-0x000000000063E000-memory.dmp

        memory/1108-78-0x0000000000190000-0x00000000001B4000-memory.dmp

        memory/1308-65-0x0000000000268000-0x0000000000287000-memory.dmp

        memory/1308-63-0x0000000000268000-0x0000000000287000-memory.dmp

        memory/1308-66-0x0000000000400000-0x000000000046E000-memory.dmp

        memory/1308-69-0x0000000000268000-0x0000000000287000-memory.dmp

        memory/1308-70-0x0000000000400000-0x000000000046E000-memory.dmp

        memory/1824-81-0x00000000004F8000-0x0000000000517000-memory.dmp

        memory/1824-83-0x00000000004F8000-0x0000000000517000-memory.dmp

        memory/1824-84-0x0000000000400000-0x000000000046E000-memory.dmp