Analysis

  • max time kernel
    57s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    04/10/2020, 17:33

General

  • Target
    6754f10af6ecb656d75b2ef3d27a0e04.exe
  • Size 701KB
  • Sample201004-sa5lr2m1tj
  • SHA256 483c603c9fb09c2e908d782f7e6f3f04e6e26b7eaaf8ac637733a4e4a32c80e7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • azorult

C2
  • http://195.245.112.115/index.php

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

C2
  • masonp.ac.ug:6970

  • marcapalgo.ug:6970

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    8mYi28y4mrIIgAY4z5LziR6M66VfapOc

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    Default

  • host

    masonp.ac.ug,marcapalgo.ug

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    6970

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Contains code to disable Windows Defender 6 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Async RAT payload 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 13 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops desktop.ini file(s) 1 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6754f10af6ecb656d75b2ef3d27a0e04.exe
    "C:\Users\Admin\AppData\Local\Temp\6754f10af6ecb656d75b2ef3d27a0e04.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Vidimkhua.vbs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Users\Admin\AppData\Local\Temp\imeo.exe
        "C:\Users\Admin\AppData\Local\Temp\imeo.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3692
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Wvyxgg.vbs"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1260
          • C:\Users\Admin\AppData\Local\Temp\imea.exe
            "C:\Users\Admin\AppData\Local\Temp\imea.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1720
            • C:\Users\Admin\AppData\Local\Temp\imea.exe
              "C:\Users\Admin\AppData\Local\Temp\imea.exe"
              6⤵
              • Executes dropped EXE
              PID:3312
            • C:\Users\Admin\AppData\Local\Temp\imea.exe
              "C:\Users\Admin\AppData\Local\Temp\imea.exe"
              6⤵
              • Executes dropped EXE
              PID:2144
        • C:\Users\Admin\AppData\Local\Temp\imeo.exe
          "C:\Users\Admin\AppData\Local\Temp\imeo.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious use of WriteProcessMemory
          PID:2372
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c taskkill /pid 2372 & erase C:\Users\Admin\AppData\Local\Temp\imeo.exe & RD /S /Q C:\\ProgramData\\212563745210880\\* & exit
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4000
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /pid 2372
              6⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2444
    • C:\Users\Admin\AppData\Local\Temp\6754f10af6ecb656d75b2ef3d27a0e04.exe
      "C:\Users\Admin\AppData\Local\Temp\6754f10af6ecb656d75b2ef3d27a0e04.exe"
      2⤵
      • Loads dropped DLL
      • Drops desktop.ini file(s)
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Users\Admin\AppData\Local\Temp\Lq1alKsJsb.exe
        "C:\Users\Admin\AppData\Local\Temp\Lq1alKsJsb.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        PID:1508
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
          "Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\VideoLAN\dcvlc.exe"'
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3936
        • C:\Users\Admin\AppData\Local\Temp\Lq1alKsJsb.exe
          "C:\Users\Admin\AppData\Local\Temp\Lq1alKsJsb.exe"
          4⤵
          • Executes dropped EXE
          PID:2416
      • C:\Users\Admin\AppData\Local\Temp\SF87nHtHXZ.exe
        "C:\Users\Admin\AppData\Local\Temp\SF87nHtHXZ.exe"
        3⤵
        • Executes dropped EXE
        PID:1016
      • C:\Users\Admin\AppData\Local\Temp\6NVQw0Bk4X.exe
        "C:\Users\Admin\AppData\Local\Temp\6NVQw0Bk4X.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        PID:3528
        • C:\Users\Admin\AppData\Local\Temp\6NVQw0Bk4X.exe
          "C:\Users\Admin\AppData\Local\Temp\6NVQw0Bk4X.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1504
          • \??\c:\windows\SysWOW64\cmstp.exe
            "c:\windows\system32\cmstp.exe" /au C:\Windows\temp\hejyjstt.inf
            5⤵
              PID:1156
        • C:\Users\Admin\AppData\Local\Temp\ON4tEYDIDD.exe
          "C:\Users\Admin\AppData\Local\Temp\ON4tEYDIDD.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          PID:1640
          • C:\Users\Admin\AppData\Local\Temp\ON4tEYDIDD.exe
            "C:\Users\Admin\AppData\Local\Temp\ON4tEYDIDD.exe"
            4⤵
            • Executes dropped EXE
            • Windows security modification
            PID:2708
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "powershell" Get-MpPreference -verbose
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4028
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\6754f10af6ecb656d75b2ef3d27a0e04.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1932
          • C:\Windows\SysWOW64\timeout.exe
            timeout /T 10 /NOBREAK
            4⤵
            • Delays execution with timeout.exe
            PID:760
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}
      1⤵
        PID:4084
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c start C:\Windows\temp\4o041i31.exe
          2⤵
            PID:188
            • C:\Windows\temp\4o041i31.exe
              C:\Windows\temp\4o041i31.exe
              3⤵
              • Executes dropped EXE
              PID:2052
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "powershell" Get-MpPreference -verbose
                4⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:1228
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /IM cmstp.exe /F
            2⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:3516

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/1228-153-0x00007FF8C2F80000-0x00007FF8C396C000-memory.dmp

              memory/1228-154-0x000001826EC40000-0x000001826EC41000-memory.dmp

              memory/1228-155-0x0000018270DF0000-0x0000018270DF1000-memory.dmp

              memory/1504-109-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/1504-120-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

              memory/1504-117-0x00000000051C0000-0x00000000051C1000-memory.dmp

              memory/1504-140-0x0000000004E80000-0x0000000004E81000-memory.dmp

              memory/1504-104-0x0000000000400000-0x000000000040C000-memory.dmp

              memory/1508-86-0x0000000005000000-0x000000000501A000-memory.dmp

              memory/1508-64-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/1508-65-0x0000000000850000-0x0000000000851000-memory.dmp

              memory/1508-67-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

              memory/1640-79-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/1640-99-0x0000000000AA0000-0x0000000000AB6000-memory.dmp

              memory/1640-84-0x0000000000A80000-0x0000000000A81000-memory.dmp

              memory/1640-81-0x0000000000320000-0x0000000000321000-memory.dmp

              memory/1720-30-0x0000000000D10000-0x0000000000D11000-memory.dmp

              memory/1720-29-0x0000000073150000-0x000000007383E000-memory.dmp

              memory/1720-32-0x0000000002E40000-0x0000000002E41000-memory.dmp

              memory/1720-43-0x000000000ABF0000-0x000000000AC12000-memory.dmp

              memory/2052-148-0x00007FF8C2F80000-0x00007FF8C396C000-memory.dmp

              memory/2052-150-0x0000000000C50000-0x0000000000C51000-memory.dmp

              memory/2144-46-0x0000000000400000-0x0000000000420000-memory.dmp

              memory/2144-49-0x0000000000400000-0x0000000000420000-memory.dmp

              memory/2372-25-0x0000000000400000-0x0000000000434000-memory.dmp

              memory/2372-21-0x0000000000400000-0x0000000000434000-memory.dmp

              memory/2416-89-0x0000000000400000-0x0000000000412000-memory.dmp

              memory/2416-94-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/2708-103-0x0000000000400000-0x0000000000408000-memory.dmp

              memory/2708-111-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/2812-7-0x0000000000400000-0x0000000000493000-memory.dmp

              memory/2812-10-0x0000000000400000-0x0000000000493000-memory.dmp

              memory/3528-83-0x0000000004F00000-0x0000000004F01000-memory.dmp

              memory/3528-97-0x0000000004F50000-0x0000000004F67000-memory.dmp

              memory/3528-78-0x0000000000760000-0x0000000000761000-memory.dmp

              memory/3528-73-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/3692-15-0x0000000000960000-0x0000000000961000-memory.dmp

              memory/3692-18-0x0000000005260000-0x00000000052AD000-memory.dmp

              memory/3692-14-0x00000000730D0000-0x00000000737BE000-memory.dmp

              memory/3692-17-0x00000000050F0000-0x00000000050F1000-memory.dmp

              memory/3888-4-0x000000000A130000-0x000000000A1DB000-memory.dmp

              memory/3888-3-0x0000000002450000-0x0000000002451000-memory.dmp

              memory/3888-0-0x0000000074000000-0x00000000746EE000-memory.dmp

              memory/3888-6-0x000000000A1E0000-0x000000000A1ED000-memory.dmp

              memory/3888-1-0x0000000000180000-0x0000000000181000-memory.dmp

              memory/3936-134-0x00000000081C0000-0x00000000081C1000-memory.dmp

              memory/3936-92-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/3936-138-0x00000000089E0000-0x00000000089E1000-memory.dmp

              memory/3936-136-0x00000000080F0000-0x00000000080F1000-memory.dmp

              memory/3936-101-0x0000000007950000-0x0000000007951000-memory.dmp

              memory/3936-132-0x0000000008060000-0x0000000008061000-memory.dmp

              memory/3936-129-0x0000000007FF0000-0x0000000007FF1000-memory.dmp

              memory/3936-174-0x0000000009860000-0x0000000009861000-memory.dmp

              memory/3936-172-0x00000000096F0000-0x00000000096F1000-memory.dmp

              memory/3936-159-0x0000000009710000-0x0000000009743000-memory.dmp

              memory/3936-98-0x0000000004E80000-0x0000000004E81000-memory.dmp

              memory/4028-118-0x0000000072130000-0x000000007281E000-memory.dmp

              memory/4028-141-0x0000000008560000-0x0000000008561000-memory.dmp

              memory/4028-124-0x00000000073A0000-0x00000000073A1000-memory.dmp

              memory/4028-176-0x0000000009720000-0x0000000009721000-memory.dmp