Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/04/2024, 11:27

General

  • Target
    fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe
  • Size 450KB
  • Sample240402-nkvwmage2s
  • SHA256 fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 194.147.140.157:3361

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    msdtc.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe
    "C:\Users\Admin\AppData\Local\Temp\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1288
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FITGzizVFD.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3028
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FITGzizVFD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB7E6.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4436
    • C:\Users\Admin\AppData\Local\Temp\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe
      "C:\Users\Admin\AppData\Local\Temp\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4456
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "msdtc" /tr '"C:\Users\Admin\AppData\Roaming\msdtc.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2972
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "msdtc" /tr '"C:\Users\Admin\AppData\Roaming\msdtc.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:4144
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCDA0.tmp.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:520
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:3824
        • C:\Users\Admin\AppData\Roaming\msdtc.exe
          "C:\Users\Admin\AppData\Roaming\msdtc.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4548
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\msdtc.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4676
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FITGzizVFD.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3552
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FITGzizVFD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2E2F.tmp"
            5⤵
            • Creates scheduled task(s)
            PID:2076
          • C:\Users\Admin\AppData\Roaming\msdtc.exe
            "C:\Users\Admin\AppData\Roaming\msdtc.exe"
            5⤵
            • Executes dropped EXE
            PID:932
          • C:\Users\Admin\AppData\Roaming\msdtc.exe
            "C:\Users\Admin\AppData\Roaming\msdtc.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            PID:3732

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 cc3fe731d095265ef2b3717ad4f67fb85b44d2692021b61e0934cb6be67995d2
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 05d95615a1b826044655e769af297cbdcce93552d0aeb6ee14150c083b9ffd60
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_huxp0h5u.ddg.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_huxp0h5u.ddg.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmpB7E6.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpB7E6.tmp
        • Size 1KB
        • SHA256 a242df44ddd46682fbb42167cee3f3f96e67a2e27a6ceb11187b86b2b8acb149
        • MD5 SHA1 SHA512

        tmpCDA0.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpCDA0.tmp.bat
        • Size 149B
        • SHA256 079ba9277438cef7f1bfca66d89b0943ecced555675bfd27926e0dd79f46d971
        • MD5 SHA1 SHA512

        msdtc.exe

        • Path C:\Users\Admin\AppData\Roaming\msdtc.exe
        • Size 450KB
        • SHA256 fafaaff6d67dd5702bf67e82ea12605ddc03797213ee5aaaed48fe6194cfe87e
        • MD5 SHA1 SHA512 SSDEEP

        memory/1288-96-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/1288-86-0x0000000007000000-0x000000000700E000-memory.dmp

        memory/1288-80-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

        memory/1288-87-0x0000000007010000-0x0000000007024000-memory.dmp

        memory/1288-69-0x0000000006090000-0x00000000060AE000-memory.dmp

        memory/1288-17-0x0000000004520000-0x0000000004556000-memory.dmp

        memory/1288-19-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/1288-18-0x0000000004B90000-0x00000000051B8000-memory.dmp

        memory/1288-79-0x0000000006CE0000-0x0000000006D83000-memory.dmp

        memory/1288-58-0x0000000075B10000-0x0000000075B5C000-memory.dmp

        memory/1288-54-0x0000000002180000-0x0000000002190000-memory.dmp

        memory/1288-53-0x0000000005AE0000-0x0000000005B2C000-memory.dmp

        memory/1288-26-0x0000000005470000-0x00000000054D6000-memory.dmp

        memory/1288-27-0x0000000002180000-0x0000000002190000-memory.dmp

        memory/1288-28-0x0000000002180000-0x0000000002190000-memory.dmp

        memory/1288-88-0x0000000007110000-0x000000000712A000-memory.dmp

        memory/1288-82-0x0000000006E40000-0x0000000006E4A000-memory.dmp

        memory/1288-23-0x0000000004A70000-0x0000000004AD6000-memory.dmp

        memory/3028-48-0x00000000055B0000-0x0000000005904000-memory.dmp

        memory/3028-24-0x0000000002370000-0x0000000002380000-memory.dmp

        memory/3028-95-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3028-22-0x0000000004AA0000-0x0000000004AC2000-memory.dmp

        memory/3028-52-0x0000000005BA0000-0x0000000005BBE000-memory.dmp

        memory/3028-25-0x0000000002370000-0x0000000002380000-memory.dmp

        memory/3028-55-0x0000000002370000-0x0000000002380000-memory.dmp

        memory/3028-21-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3028-56-0x0000000006BA0000-0x0000000006BD2000-memory.dmp

        memory/3028-89-0x00000000071C0000-0x00000000071C8000-memory.dmp

        memory/3028-59-0x0000000075B10000-0x0000000075B5C000-memory.dmp

        memory/3028-84-0x00000000070A0000-0x00000000070B1000-memory.dmp

        memory/3028-83-0x0000000007120000-0x00000000071B6000-memory.dmp

        memory/3028-57-0x000000007F2F0000-0x000000007F300000-memory.dmp

        memory/3028-81-0x0000000007510000-0x0000000007B8A000-memory.dmp

        memory/3552-123-0x0000000002F30000-0x0000000002F40000-memory.dmp

        memory/3552-121-0x0000000002F30000-0x0000000002F40000-memory.dmp

        memory/3552-119-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3732-131-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3924-7-0x0000000006B50000-0x0000000006B5A000-memory.dmp

        memory/3924-5-0x0000000005810000-0x000000000581A000-memory.dmp

        memory/3924-9-0x0000000006BA0000-0x0000000006BF4000-memory.dmp

        memory/3924-51-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3924-16-0x00000000058F0000-0x0000000005900000-memory.dmp

        memory/3924-6-0x00000000058D0000-0x00000000058E4000-memory.dmp

        memory/3924-11-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3924-1-0x0000000000E30000-0x0000000000EA4000-memory.dmp

        memory/3924-0-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/3924-8-0x0000000006B60000-0x0000000006B6C000-memory.dmp

        memory/3924-4-0x00000000058F0000-0x0000000005900000-memory.dmp

        memory/3924-3-0x0000000005750000-0x00000000057E2000-memory.dmp

        memory/3924-2-0x0000000005DC0000-0x0000000006364000-memory.dmp

        memory/3924-10-0x00000000091E0000-0x000000000927C000-memory.dmp

        memory/4456-101-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4456-85-0x0000000005280000-0x0000000005290000-memory.dmp

        memory/4456-39-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/4456-49-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4548-107-0x0000000004D20000-0x0000000004D30000-memory.dmp

        memory/4548-110-0x0000000004D20000-0x0000000004D30000-memory.dmp

        memory/4548-108-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4548-132-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4548-106-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4676-120-0x0000000005930000-0x0000000005C84000-memory.dmp

        memory/4676-112-0x0000000004B40000-0x0000000004B50000-memory.dmp

        memory/4676-111-0x0000000075280000-0x0000000075A30000-memory.dmp

        memory/4676-143-0x0000000006580000-0x00000000065CC000-memory.dmp

        memory/4676-144-0x0000000004B40000-0x0000000004B50000-memory.dmp