Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/07/2024, 07:03

General

  • Target
    670d1014ec5713d005f8ddfefc495a9e.exe
  • Size 47KB
  • Sample240729-hvb9daxhkr
  • SHA256 70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • 176.111.174.140:6606

  • 176.111.174.140:7707

  • 176.111.174.140:8808

Mutex
  • PWhSiRkcxVoa

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • redline

Botnet
  • diamotrix

C2
  • 176.111.174.140:1912

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 2 IoCs
  • Async RAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 5 IoCs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Start PowerShell.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3452
    • C:\Users\Admin\AppData\Local\Temp\670d1014ec5713d005f8ddfefc495a9e.exe
      "C:\Users\Admin\AppData\Local\Temp\670d1014ec5713d005f8ddfefc495a9e.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4760
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3192
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1324
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD179.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3624
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:5076
        • C:\Users\Admin\AppData\Roaming\svchost.exe
          "C:\Users\Admin\AppData\Roaming\svchost.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2204
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\yiowyo.exe"' & exit
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4232
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\yiowyo.exe"'
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3988
              • C:\Users\Admin\AppData\Local\Temp\yiowyo.exe
                "C:\Users\Admin\AppData\Local\Temp\yiowyo.exe"
                7⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:5012
                • C:\Windows\SYSTEM32\schtasks.exe
                  schtasks /create /tn "SystemServicesTools" /tr "C:\Users\Admin\AppData\Roaming\{55B28E2F7F6B3750773564}\{55B28E2F7F6B3750773564}.exe" /sc onstart /f
                  8⤵
                  • Scheduled Task/Job: Scheduled Task
                  PID:3684
                • C:\Windows\system32\relog.exe
                  C:\Windows\system32\relog.exe
                  8⤵
                  • Drops file in Drivers directory
                  • Adds Run key to start application
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:4640
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /tn "BnaZsTZafj" /tr "C:\Users\Admin\AppData\Roaming\Adobe\Service_Adobe.exe" /sc onstart /f
                    9⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:3488
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /tn "BnaZsTZafj" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Service_Microsoft.exe" /sc onstart /f
                    9⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:4708
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /tn "E9iAjnmNS5" /tr "C:\Users\Admin\AppData\Roaming\Mozilla\Service_Mozilla.exe" /sc onstart /f
                    9⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:3892
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /tn "E9iAjnmNS5" /tr "C:\Users\Admin\AppData\Roaming\Sun\Service_Sun.exe" /sc onstart /f
                    9⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:3916
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /tn "E9iAjnmNS5" /tr "C:\Users\Admin\AppData\Roaming\{55B28E2F7F6B3750773564}\Service_{55B28E2F7F6B3750773564}.exe" /sc onstart /f
                    9⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:1344
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\vukksf.exe"' & exit
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4976
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\vukksf.exe"'
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:5060
              • C:\Users\Admin\AppData\Local\Temp\vukksf.exe
                "C:\Users\Admin\AppData\Local\Temp\vukksf.exe"
                7⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                PID:2276
    • C:\Users\Admin\AppData\Local\Temp\C1C.tmp.uIZtAux.exe
      "C:\Users\Admin\AppData\Local\Temp\C1C.tmp.uIZtAux.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4744
    • C:\Users\Admin\AppData\Local\Temp\12C4.tmp.svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\12C4.tmp.svchost.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3904
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /xml "C:\Users\Admin\AppData\Roaming\WinZIP_32\version.xml" /tn WPDR\Config_Error\Version /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2616

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 1KB
        • SHA256 e8bd7d8d1d0437c71aceb032f9fb08dd1147f41c048540254971cc60e95d6cd7
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 15KB
        • SHA256 bca46c8870743a8c76c6c0bfc270372559fd052f7880d09ee56083800e71b328
        • MD5 SHA1 SHA512 SSDEEP

        12C4.tmp.svchost.exe

        • Path C:\Users\Admin\AppData\Local\Temp\12C4.tmp.svchost.exe
        • Size 321KB
        • SHA256 d73a9c06d72b25fc9cc1d3883ba52ba949c91297d20f8cff37481d9b442a7ef7
        • MD5 SHA1 SHA512 SSDEEP

        C1C.tmp.uIZtAux.exe

        • Path C:\Users\Admin\AppData\Local\Temp\C1C.tmp.uIZtAux.exe
        • Size 300KB
        • SHA256 6985ec7f67fabd26633c991be04ce5f899224a56bb078ba186b4be21f9e4714d
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_wh1521pz.eqt.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wh1521pz.eqt.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmpD179.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpD179.tmp.bat
        • Size 151B
        • SHA256 2a7d1da6052130e2591a23fee211f27edec106e63dd1b9f0c7976c986ba811b1
        • MD5 SHA1 SHA512

        yiowyo.exe

        • Path C:\Users\Admin\AppData\Local\Temp\yiowyo.exe
        • Size 322KB
        • SHA256 4da3bff89fc796886ca615a29a2595c4109f86fff2a9e699ea1036195719cb3b
        • MD5 SHA1 SHA512 SSDEEP

        version.xml

        • Path C:\Users\Admin\AppData\Roaming\WinZIP_32\version.xml
        • Size 1KB
        • SHA256 93e469a8135addc4822f19a7afb7d02baea8242626188ce3e2b039862fc67511
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Users\Admin\AppData\Roaming\svchost.exe
        • Size 47KB
        • SHA256 70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd
        • MD5 SHA1 SHA512 SSDEEP

        hosts

        • Path C:\Windows\System32\drivers\etc\hosts
        • Size 1KB
        • SHA256 1c1eab02470f70f1067cc91ae1506955f2cd92eac3afac8eb3592cc718c2cab3
        • MD5 SHA1 SHA512

        memory/2204-16-0x00000000065D0000-0x0000000006636000-memory.dmp

        memory/2204-17-0x0000000007680000-0x00000000076F6000-memory.dmp

        memory/2204-18-0x0000000007600000-0x0000000007662000-memory.dmp

        memory/2204-19-0x0000000007760000-0x000000000777E000-memory.dmp

        memory/2204-15-0x0000000006AD0000-0x0000000007074000-memory.dmp

        memory/2204-14-0x0000000074490000-0x0000000074C40000-memory.dmp

        memory/2204-13-0x0000000074490000-0x0000000074C40000-memory.dmp

        memory/2276-163-0x0000000000400000-0x00000000004BC000-memory.dmp

        memory/2276-165-0x0000000000400000-0x00000000004BC000-memory.dmp

        memory/3452-108-0x0000000002470000-0x0000000002486000-memory.dmp

        memory/3452-110-0x0000000002AF0000-0x0000000002B47000-memory.dmp

        memory/3452-106-0x00000000029F0000-0x0000000002A33000-memory.dmp

        memory/3904-138-0x0000000000400000-0x00000000004BC000-memory.dmp

        memory/3904-166-0x0000000000400000-0x00000000004BC000-memory.dmp

        memory/3988-34-0x00000000061F0000-0x0000000006544000-memory.dmp

        memory/3988-37-0x0000000007630000-0x00000000076C6000-memory.dmp

        memory/3988-36-0x0000000006720000-0x000000000676C000-memory.dmp

        memory/3988-35-0x0000000006670000-0x000000000668E000-memory.dmp

        memory/3988-38-0x0000000006B70000-0x0000000006B8A000-memory.dmp

        memory/3988-33-0x00000000060A0000-0x0000000006106000-memory.dmp

        memory/3988-28-0x0000000005E70000-0x0000000005E92000-memory.dmp

        memory/3988-39-0x0000000006BC0000-0x0000000006BE2000-memory.dmp

        memory/3988-22-0x00000000057D0000-0x0000000005DF8000-memory.dmp

        memory/3988-21-0x0000000002D10000-0x0000000002D46000-memory.dmp

        memory/4640-162-0x00007FF64F1C0000-0x00007FF64F216000-memory.dmp

        memory/4744-169-0x00000000071D0000-0x00000000076FC000-memory.dmp

        memory/4744-124-0x0000000004D20000-0x0000000004DB2000-memory.dmp

        memory/4744-125-0x0000000004ED0000-0x0000000004EDA000-memory.dmp

        memory/4744-168-0x0000000006AD0000-0x0000000006C92000-memory.dmp

        memory/4744-123-0x0000000000410000-0x0000000000462000-memory.dmp

        memory/4744-154-0x0000000005DA0000-0x00000000063B8000-memory.dmp

        memory/4744-155-0x0000000005780000-0x000000000588A000-memory.dmp

        memory/4744-156-0x0000000004FB0000-0x0000000004FC2000-memory.dmp

        memory/4744-157-0x0000000005010000-0x000000000504C000-memory.dmp

        memory/4760-3-0x00000000055F0000-0x000000000568C000-memory.dmp

        memory/4760-2-0x0000000074490000-0x0000000074C40000-memory.dmp

        memory/4760-1-0x0000000000B90000-0x0000000000BA2000-memory.dmp

        memory/4760-8-0x0000000074490000-0x0000000074C40000-memory.dmp

        memory/4760-0-0x000000007449E000-0x000000007449F000-memory.dmp

        memory/5060-153-0x00000000067D0000-0x000000000681C000-memory.dmp

        memory/5060-144-0x0000000005CA0000-0x0000000005FF4000-memory.dmp