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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/01/2024, 18:10

General

  • Target

    start.exe

  • Size

    93KB

  • MD5

    937286297fbc003e6a69fdc0f02ce8b0

  • SHA1

    2ebd595bbb357264649f17f8b066941f05befefb

  • SHA256

    35b46563f4d1ef02e7e2a315df8bbf0f8c2e49803856af0cf1418ea19fba58cf

  • SHA512

    9c26792ef5102c7215afae12264e2eca6c2a0f9ed67d9b84918b720f4ca81b5fa2cdb59a28f4089e25abb93243a3d90e98d45dda9862286e2e074708eaf405f4

  • SSDEEP

    1536:t8NBNvGfr2p4dTc/hDjEwzGi1dDmD4gS:t8Yfr2p4dI/Gi1dwh

Score
10/10

Malware Config

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\start.exe
    "C:\Users\Admin\AppData\Local\Temp\start.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops autorun.inf file
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4108
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:3888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\server.exe

    Filesize

    93KB

    MD5

    937286297fbc003e6a69fdc0f02ce8b0

    SHA1

    2ebd595bbb357264649f17f8b066941f05befefb

    SHA256

    35b46563f4d1ef02e7e2a315df8bbf0f8c2e49803856af0cf1418ea19fba58cf

    SHA512

    9c26792ef5102c7215afae12264e2eca6c2a0f9ed67d9b84918b720f4ca81b5fa2cdb59a28f4089e25abb93243a3d90e98d45dda9862286e2e074708eaf405f4

  • C:\Users\Admin\AppData\Roaming\app

    Filesize

    5B

    MD5

    69cf10399d0d1350c3698099796624cb

    SHA1

    d0b58b76ff065f51172971853a7da414286d9ea7

    SHA256

    a7bff94c7cdef50b67a3bab142ebcec4d360491e339581c41f433fec6d002f48

    SHA512

    5e1c9745b2b529c026e51fbff7fd4e1e0bd208c705b7da830459758d28c01b32b9bc93caa7ad60228d3e785784023d8a739fda0dab62d3c76770ea84c257f1f7

  • memory/864-0-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/864-1-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/864-2-0x0000000000FF0000-0x0000000001000000-memory.dmp

    Filesize

    64KB

  • memory/864-14-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/4108-16-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/4108-13-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/4108-15-0x00000000008F0000-0x0000000000900000-memory.dmp

    Filesize

    64KB

  • memory/4108-54-0x00000000008F0000-0x0000000000900000-memory.dmp

    Filesize

    64KB

  • memory/4108-55-0x0000000075070000-0x0000000075621000-memory.dmp

    Filesize

    5.7MB

  • memory/4108-56-0x00000000008F0000-0x0000000000900000-memory.dmp

    Filesize

    64KB

  • memory/4108-57-0x00000000008F0000-0x0000000000900000-memory.dmp

    Filesize

    64KB