Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/12/2022, 01:01

General

  • Target
    file.exe
  • Size 326KB
  • Sample221209-bc823aeh6v
  • SHA256 196d0616fb958f8b9f10ae79c0560f3074faaf500e25c25c756f396ec2eaee49
  • 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 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 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.

  • Program crash 3 IoCs
  • 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 9 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      "C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:368
      • 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:3148
      • 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:872
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 1132
      2⤵
      • Program crash
      PID:1876
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3404 -ip 3404
    1⤵
      PID:4000
    • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
      1⤵
      • Executes dropped EXE
      PID:4036
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4036 -s 432
        2⤵
        • Program crash
        PID:5040
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4036 -ip 4036
      1⤵
        PID:2960
      • C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
        1⤵
        • Executes dropped EXE
        PID:1972
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1972 -s 416
          2⤵
          • Program crash
          PID:396
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1972 -ip 1972
        1⤵
          PID:2296

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              gntuud.exe

              • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
              • Size 326KB
              • SHA256 196d0616fb958f8b9f10ae79c0560f3074faaf500e25c25c756f396ec2eaee49
              • MD5 SHA1 SHA512 SSDEEP

              gntuud.exe

              • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
              • Size 326KB
              • SHA256 196d0616fb958f8b9f10ae79c0560f3074faaf500e25c25c756f396ec2eaee49
              • MD5 SHA1 SHA512 SSDEEP

              gntuud.exe

              • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
              • Size 326KB
              • SHA256 196d0616fb958f8b9f10ae79c0560f3074faaf500e25c25c756f396ec2eaee49
              • MD5 SHA1 SHA512 SSDEEP

              gntuud.exe

              • Path C:\Users\Admin\AppData\Local\Temp\ecaac49691\gntuud.exe
              • Size 326KB
              • SHA256 196d0616fb958f8b9f10ae79c0560f3074faaf500e25c25c756f396ec2eaee49
              • MD5 SHA1 SHA512 SSDEEP

              cred64.dll

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

              cred64.dll

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

              memory/368-141-0x00000000007D8000-0x00000000007F7000-memory.dmp

              memory/368-142-0x0000000000400000-0x000000000046E000-memory.dmp

              memory/368-143-0x00000000007D8000-0x00000000007F7000-memory.dmp

              memory/368-144-0x0000000000400000-0x000000000046E000-memory.dmp

              memory/1972-152-0x000000000066C000-0x000000000068B000-memory.dmp

              memory/1972-153-0x0000000000400000-0x000000000046E000-memory.dmp

              memory/3404-137-0x0000000000400000-0x000000000046E000-memory.dmp

              memory/3404-139-0x0000000000600000-0x000000000063E000-memory.dmp

              memory/3404-138-0x0000000000659000-0x0000000000678000-memory.dmp

              memory/3404-132-0x0000000000659000-0x0000000000678000-memory.dmp

              memory/3404-133-0x0000000000600000-0x000000000063E000-memory.dmp

              memory/4036-147-0x0000000000400000-0x000000000046E000-memory.dmp

              memory/4036-146-0x000000000053C000-0x000000000055B000-memory.dmp