Analysis

  • max time kernel
    152s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/09/2022, 14:26

General

  • Target

    file.ps1

  • Size

    346B

  • MD5

    c1b48a15c4dff984d471cd8e5e8e094f

  • SHA1

    18f1f447d139adfddb526e83c327ba665bfba1b2

  • SHA256

    334d41d1daf71550a19c4c241ab83af52c942da8b53e5ef55be61984050215e5

  • SHA512

    f3fd36bc2b82ca79aa85b2433dc1cdb2c90cd08e911081822f97d89a6c8f7a9a50c0bf601c02f780293b664aeb223aa70af796bc44e77f07f9a1af8d104cd417

Score
10/10

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

envios000.duckdns.org:7777

Mutex

63d644bf02114593bb3

Attributes
  • reg_key

    63d644bf02114593bb3

  • splitter

    @!#&^%$

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Blocklisted process makes network request 4 IoCs
  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\file.ps1
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe" -WindowStyle Hidden Copy-Item -Path *.vbs -Destination C:\Windows\Temp\Done.vbs
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3404
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3068
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C Y /N /D Y /T 1 & Del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        3⤵
          PID:3512

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            2KB

            MD5

            6cf293cb4d80be23433eecf74ddb5503

            SHA1

            24fe4752df102c2ef492954d6b046cb5512ad408

            SHA256

            b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

            SHA512

            0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

            Filesize

            1KB

            MD5

            5a0a1671f3117ae81bc90e79eac37471

            SHA1

            e102d030a87a2d6243344b26344636e94ce13572

            SHA256

            228ede5639b6eeaab79ba585854e63b701147e30d8871c998208171e34d6747a

            SHA512

            f84a29cdc79a2788c2e2d95cc7f357661f60592a34095401b4ff585a05d08b2f6a22c38e72ecada6a88d3b1665c850719817bac9aa1e5dcdef61130779ecdbff

          • memory/1112-133-0x00007FFF3CBB0000-0x00007FFF3D671000-memory.dmp

            Filesize

            10.8MB

          • memory/1112-140-0x00007FFF3CBB0000-0x00007FFF3D671000-memory.dmp

            Filesize

            10.8MB

          • memory/1112-132-0x000001E270290000-0x000001E2702B2000-memory.dmp

            Filesize

            136KB

          • memory/3068-136-0x0000000000400000-0x000000000040C000-memory.dmp

            Filesize

            48KB

          • memory/3068-141-0x00000000051A0000-0x000000000523C000-memory.dmp

            Filesize

            624KB

          • memory/3068-142-0x00000000057F0000-0x0000000005D94000-memory.dmp

            Filesize

            5.6MB

          • memory/3068-143-0x0000000005410000-0x00000000054A2000-memory.dmp

            Filesize

            584KB

          • memory/3068-144-0x0000000005370000-0x000000000537A000-memory.dmp

            Filesize

            40KB

          • memory/3068-146-0x00000000054B0000-0x0000000005516000-memory.dmp

            Filesize

            408KB

          • memory/3404-135-0x00007FFF3CBB0000-0x00007FFF3D671000-memory.dmp

            Filesize

            10.8MB

          • memory/3404-145-0x00007FFF3CBB0000-0x00007FFF3D671000-memory.dmp

            Filesize

            10.8MB