Overview

overview

10

Static

static

4075e5cedf...cc.exe

windows7_x64

10

4075e5cedf...cc.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    24/06/2020, 14:56

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General

  • Target
    4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc.exe
  • Size 1.5MB
  • Sample200624-wll9tk2b7e
  • SHA256 4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc
  • MD5 SHA1 SHA512
Score
10/10
asyncratevasionratspywareupx

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.6D

C2

  • null:null

Mutex

  • Riddle1337

Attributes
  • aes_key

    BdWDJiqMP2ZNyzBwdN5Z7ICTpIT4KsaW

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    BoT

  • host

    null

  • hwid

    1

  • install_file

  • install_folder

    %AppData%

  • mutex

    Riddle1337

  • pastebin_config

    https://pastebin.com/raw/bxXpigGK

  • port

    null

  • version

    0.5.6D

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Modifies visibility of file extensions in Explorer 2 TTPs
    evasion
  • Async RAT payload 3 IoCs
    rat
  • Executes dropped EXE 8 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops startup file 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Program crash 1 IoCs
  • NTFS ADS 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 971 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc.exe
    "C:\Users\Admin\AppData\Local\Temp\4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\MDQ5OT2WiMlrpUfcDe.exe
      "C:\Users\Admin\AppData\Local\Temp\MDQ5OT2WiMlrpUfcDe.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\system32\notepad.exe"
        3⤵
        • Drops startup file
        • Loads dropped DLL
        • NTFS ADS
        • Suspicious use of WriteProcessMemory
        PID:552
        • C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe
          "C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1060
          • C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe
            "C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1536
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c start /b powershell Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\tmp8239.tmpg r.exe"' & exit
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1444
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\tmp8239.tmpg r.exe"'
                7⤵
                • Loads dropped DLL
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:856
                • C:\Users\Admin\AppData\Local\Temp\tmp8239.tmpg r.exe
                  "C:\Users\Admin\AppData\Local\Temp\tmp8239.tmpg r.exe"
                  8⤵
                  • Executes dropped EXE
                  • Suspicious use of WriteProcessMemory
                  PID:628
                  • C:\Windows\SysWOW64\notepad.exe
                    "C:\Windows\system32\notepad.exe"
                    9⤵
                    • Drops startup file
                    • Loads dropped DLL
                    • NTFS ADS
                    • Suspicious use of WriteProcessMemory
                    PID:1072
                    • C:\Users\Admin\AppData\Roaming\svhost\svhost.exe
                      "C:\Users\Admin\AppData\Roaming\svhost\svhost.exe"
                      10⤵
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious behavior: MapViewOfSection
                      • Suspicious use of WriteProcessMemory
                      PID:1048
                      • C:\Users\Admin\AppData\Roaming\svhost\svhost.exe
                        "C:\Users\Admin\AppData\Roaming\svhost\svhost.exe"
                        11⤵
                        • Executes dropped EXE
                        • Suspicious behavior: AddClipboardFormatListener
                        PID:1808
                      • C:\Users\Admin\AppData\Roaming\svhost\svhost.exe
                        "C:\Users\Admin\AppData\Roaming\svhost\svhost.exe" 2 1808 208526
                        11⤵
                        • Executes dropped EXE
                        PID:308
          • C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe
            "C:\Users\Admin\AppData\Roaming\Runtime Broker\Runtime Broker.exe" 2 1536 117031
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:1796
    • C:\Users\Admin\AppData\Local\Temp\4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc.exe
      "C:\Users\Admin\AppData\Local\Temp\4075e5cedf262f587538979cd6d62ff4b0fc5bdf7f9a4b770ae9e297ea7c9fcc.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1296
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1296 -s 584
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1572

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/552-21-0x0000000000090000-0x0000000000091000-memory.dmp
        Download

        memory/1296-4-0x0000000000400000-0x0000000000492000-memory.dmp
        Download

        memory/1296-9-0x0000000000292000-0x0000000000293000-memory.dmp
        Download

        memory/1296-10-0x0000000000220000-0x000000000025D000-memory.dmp
        Download

        memory/1296-8-0x00000000004A0000-0x00000000004E2000-memory.dmp
        Download

        memory/1296-7-0x0000000000400000-0x0000000000492000-memory.dmp
        Download

        memory/1296-6-0x0000000000400000-0x0000000000492000-memory.dmp
        Download

        memory/1536-36-0x0000000000322000-0x0000000000323000-memory.dmp
        Download

        memory/1536-28-0x0000000000400000-0x0000000000432000-memory.dmp
        Download

        memory/1536-32-0x0000000000400000-0x0000000000432000-memory.dmp
        Download

        memory/1536-37-0x00000000002A0000-0x00000000002AC000-memory.dmp
        Download

        memory/1536-35-0x00000000002D0000-0x00000000002E2000-memory.dmp
        Download

        memory/1536-34-0x0000000000400000-0x0000000000432000-memory.dmp
        Download

        memory/1572-13-0x0000000002180000-0x0000000002191000-memory.dmp
        Download

        memory/1572-18-0x0000000002710000-0x0000000002721000-memory.dmp
        Download

        memory/1572-19-0x0000000002710000-0x0000000002721000-memory.dmp
        Download

        memory/1808-59-0x0000000000400000-0x000000000041D000-memory.dmp
        Download

        memory/1808-61-0x0000000000400000-0x000000000041D000-memory.dmp
        Download

        memory/1808-56-0x0000000000400000-0x000000000041D000-memory.dmp
        Download

        memory/1808-62-0x0000000000240000-0x0000000000248000-memory.dmp
        Download

        memory/1808-64-0x0000000001E52000-0x0000000001E53000-memory.dmp
        Download

        memory/1808-65-0x0000000000220000-0x0000000000222000-memory.dmp
        Download