Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2023, 05:34

General

  • Target

    B.ps1

  • Size

    226KB

  • MD5

    fb299e0e8ae35692f1541b2912812184

  • SHA1

    4ef1f2589e960b9645a8010920da2b1caacdd350

  • SHA256

    e2e4ce0315ef9f241c5d3ab09ccc9de3f8bd71f5388d8a4dd7fadd0a1110f266

  • SHA512

    ba36c4ad9721ad46f2cd56a819643ed4d01804d76952638c1f7842d745c10ca0e70be874ad5e6de504627c4210545247b9da9312574fb0fc658fe13032450863

  • SSDEEP

    1536:FeMD10HxuHY05UIy4rpmLoKZqcxU7SHzqQHw7rRim3ve0pAGFBQDVWQIypsc8bIX:gk0t0iInKWQIyjdZaRMXYxr315+3ApA

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

C2

Modyhr.ddnsfree.com:6606

Modyhr.ddnsfree.com:7707

Modyhr.ddnsfree.com:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 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\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\B.ps1
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Windows\system32\schtasks.exe
      "C:\Windows\system32\schtasks.exe" /create /sc minute /mo 1 /tn Nothing /tr C:\ProgramData\Nothing\Nothing.vbs
      2⤵
      • Creates scheduled task(s)
      PID:2816
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\ProgramData\Nothing\Nothing.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:964
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\Nothing\1.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3288
      • C:\Windows\system32\cmd.exe
        CMD /C POWERSHELL -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\Nothing\Nothing.ps1"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2368
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          POWERSHELL -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\Nothing\Nothing.ps1"
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2288
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3672
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\ProgramData\Nothing\Nothing.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4132
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\Nothing\1.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2868
      • C:\Windows\system32\cmd.exe
        CMD /C POWERSHELL -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\Nothing\Nothing.ps1"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4484
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          POWERSHELL -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\Nothing\Nothing.ps1"
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4968
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
            5⤵
              PID:3880
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
              5⤵
                PID:516
      • C:\Windows\System32\WScript.exe
        C:\Windows\System32\WScript.exe "C:\ProgramData\Nothing\Nothing.vbs"
        1⤵
          PID:1968

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • C:\ProgramData\Nothing\1.bat

                Filesize

                106B

                MD5

                2135f53fe669b95ef3dfc8159f002f35

                SHA1

                784f7c804a8017298a0444961da570c54e234128

                SHA256

                a012ee5f76492bcf0a72c415f098d0a0e21ea28f3a08e179089ed74ec1051134

                SHA512

                6115083a87f84bbbd28607c407324539c9ae5e6834c6d18404ed516f993ab4f7fedb246c192257183dc429bf2a23b84c81fa52e608a3486666a0ecd001614b92

              • C:\ProgramData\Nothing\Nothing.ps1

                Filesize

                225KB

                MD5

                633e2bd5aad471f331d308b70df2cde7

                SHA1

                187f14b57103beffada3b283eeba4f528a466b00

                SHA256

                d1e4eab2f9cb99e6d3fcf39b82bfcf7cdc216cd355570b8305c15877889afcea

                SHA512

                7c36819998154344f6ae6c68b2f72d559fd92a088fd4a96c30b75727310cdcf36b4f42dc57f66a4e438ff1cac1fa121479e7d20630b7ddfdc1ebb520b343fb80

              • C:\ProgramData\Nothing\Nothing.vbs

                Filesize

                124B

                MD5

                617f5a86804776b6e4153709d03fd144

                SHA1

                2abe924e3ada5b487a9a67ee22e8e1c21a47b516

                SHA256

                b582e1508d3cc895cbb37a547a770a62e1c02ec555265f7bd231c734127b3867

                SHA512

                a40b25239589f3029a837077c639633e966f69c6c4096db1cad526e849fd5a44bef01270dc4f20049829ed8e85f1fae3e6e0b3d4be8c049d7c974df958136842

              • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

                Filesize

                3KB

                MD5

                223bd4ae02766ddc32e6145fd1a29301

                SHA1

                900cfd6526d7e33fb4039a1cc2790ea049bc2c5b

                SHA256

                1022ec2fed08ff473817fc53893e192a8e33e6a16f3d2c8cb6fd37f49c938e1e

                SHA512

                648cd3f8a89a18128d2b1bf960835e087a74cdbc783dbfcc712b3cb9e3a2e4f715e534ba2ef81d89af8f60d4882f6859373248c875ceb26ad0922e891f2e74cc

              • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                Filesize

                1KB

                MD5

                5161e9d6b9b677b7af6e5bb11a361b91

                SHA1

                9fe0a04c2bb86467b9aa584c78db4fc7eccfdd42

                SHA256

                addb0aa038e121d21d7b4bd4ba49316c05294a582cb430eb37ce3925324bd3d0

                SHA512

                95b4a85b4240145d35f1f14bc07ee87b597d484935599f898074be16a7bfcc6fdb36e31e5afedac1c83bdbcbf402c40a3573f2b3512ba521f3ad29fd503f7749

              • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                Filesize

                1016B

                MD5

                cb7666e5e5cad13b3a781f3d2eb0d24f

                SHA1

                6578ad7f4f59ebd771a1351cc3df7f87d471b033

                SHA256

                cafff50a0d49b0a3770acc5c5d4433f5ad01f1a7d5479484912c8e9664880137

                SHA512

                ffc2b6a5730ef07f907b8c2617388ac2d2abb4cd0035a4baf086eb3a8c62bb5da16259387f3d64e803fbac9e243a611efca12462c2b98449826b10787b740b04

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3b3y0pti.mxi.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • memory/516-197-0x0000000005420000-0x0000000005430000-memory.dmp

                Filesize

                64KB

              • memory/1052-152-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/1052-144-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/1052-150-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/1052-133-0x000001C147A70000-0x000001C147A92000-memory.dmp

                Filesize

                136KB

              • memory/1052-151-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/1052-145-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/1052-139-0x000001C1479B0000-0x000001C1479C0000-memory.dmp

                Filesize

                64KB

              • memory/2288-172-0x000001CB19790000-0x000001CB197A0000-memory.dmp

                Filesize

                64KB

              • memory/2288-165-0x000001CB19790000-0x000001CB197A0000-memory.dmp

                Filesize

                64KB

              • memory/2288-166-0x000001CB19790000-0x000001CB197A0000-memory.dmp

                Filesize

                64KB

              • memory/3672-176-0x0000000005E50000-0x00000000063F4000-memory.dmp

                Filesize

                5.6MB

              • memory/3672-177-0x0000000005A80000-0x0000000005B12000-memory.dmp

                Filesize

                584KB

              • memory/3672-178-0x0000000005A60000-0x0000000005A6A000-memory.dmp

                Filesize

                40KB

              • memory/3672-179-0x00000000065E0000-0x000000000667C000-memory.dmp

                Filesize

                624KB

              • memory/3672-180-0x0000000006540000-0x00000000065A6000-memory.dmp

                Filesize

                408KB

              • memory/3672-181-0x0000000005500000-0x0000000005510000-memory.dmp

                Filesize

                64KB

              • memory/3672-175-0x0000000005500000-0x0000000005510000-memory.dmp

                Filesize

                64KB

              • memory/3672-173-0x0000000000400000-0x0000000000416000-memory.dmp

                Filesize

                88KB

              • memory/4968-192-0x0000021181720000-0x0000021181730000-memory.dmp

                Filesize

                64KB

              • memory/4968-193-0x0000021181720000-0x0000021181730000-memory.dmp

                Filesize

                64KB

              • memory/4968-194-0x0000021181720000-0x0000021181730000-memory.dmp

                Filesize

                64KB