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Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2023, 09:23

General

  • Target

    njRAT Greenv0.7.exe

  • Size

    27KB

  • MD5

    4615ac6caa9572931cc9ee8bf6689e2c

  • SHA1

    d8324b9ecbd35854092b4266625b9572cb8a4a71

  • SHA256

    fdb771456b0ca1d8643c2982884f2fc16527d9adc45bb29fefd97232a64af616

  • SHA512

    5602c8d56966d473f49e13d7eea69ac8b07d0143a353d98682451a51b10027dd030ff1bc4a40b90922ce93ff517b2e12f4cacd15b44df9640a7be6c326ac3936

  • SSDEEP

    384:NL5LlYn+oYjGmhcbws96PASW+MlAQk93vmhm7UMKmIEecKdbXTzm9bVhcak67r6h:dfZsm2rlA/vMHTi9bD

Malware Config

Extracted

Family

njrat

Version

v2.0

Botnet

HacKed

C2

paul-positive.at.ply.gg:9693

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\njRAT Greenv0.7.exe
    "C:\Users\Admin\AppData\Local\Temp\njRAT Greenv0.7.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.exe"
      2⤵
      • Drops startup file
      • Views/modifies file attributes
      PID:4736
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.exe"
      2⤵
      • Views/modifies file attributes
      PID:1792
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops startup file
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4908
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3696

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.exe

    Filesize

    27KB

    MD5

    4615ac6caa9572931cc9ee8bf6689e2c

    SHA1

    d8324b9ecbd35854092b4266625b9572cb8a4a71

    SHA256

    fdb771456b0ca1d8643c2982884f2fc16527d9adc45bb29fefd97232a64af616

    SHA512

    5602c8d56966d473f49e13d7eea69ac8b07d0143a353d98682451a51b10027dd030ff1bc4a40b90922ce93ff517b2e12f4cacd15b44df9640a7be6c326ac3936

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk

    Filesize

    1KB

    MD5

    937e7212c4aaf0d9a98c864adeeef338

    SHA1

    75fd9e534c45349f34e19003c31eafe22e540ad1

    SHA256

    c24bb82e26e3dcc2045191f22cb85e2a39a3bd6be1d94f4f7610bf7867515a5e

    SHA512

    9927fed448c0086a8da687c57af1da761584b36f6f60098b0d4fdafed3aa79893c43fd6acb3346fe6e738e34e0373fe0b6daf27544b68e3e3938f698967817d5

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.exe

    Filesize

    27KB

    MD5

    4615ac6caa9572931cc9ee8bf6689e2c

    SHA1

    d8324b9ecbd35854092b4266625b9572cb8a4a71

    SHA256

    fdb771456b0ca1d8643c2982884f2fc16527d9adc45bb29fefd97232a64af616

    SHA512

    5602c8d56966d473f49e13d7eea69ac8b07d0143a353d98682451a51b10027dd030ff1bc4a40b90922ce93ff517b2e12f4cacd15b44df9640a7be6c326ac3936

  • memory/4196-133-0x0000000000D60000-0x0000000000D70000-memory.dmp

    Filesize

    64KB

  • memory/4196-136-0x0000000000D60000-0x0000000000D70000-memory.dmp

    Filesize

    64KB

  • memory/4908-149-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-148-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-147-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-146-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-145-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-144-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-143-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-137-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-138-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB

  • memory/4908-139-0x000002C740350000-0x000002C740351000-memory.dmp

    Filesize

    4KB