Analysis

  • max time kernel
    151s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    22-09-2021 14:12

General

  • Target

    ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145.exe

  • Size

    310KB

  • MD5

    7d800ad9f415b03e6bb9a029fa57a3ec

  • SHA1

    73d737b77a8fea41dad18dc6cdde0892b0dc9796

  • SHA256

    ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145

  • SHA512

    5549ec9bdf48419ad8edaceb1120ad4c8ccc0ead7057a7349ca40ccd997c70244eb1c102a4f63e03acd76947a76a0456dc00473458c18509b803451779c5bf0a

Score
10/10

Malware Config

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145.exe
    "C:\Users\Admin\AppData\Local\Temp\ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Roaming\System.exe
      "C:\Users\Admin\AppData\Roaming\System.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:964
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\System.exe" "System.exe" ENABLE
        3⤵
          PID:1620

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Modify Existing Service

    1
    T1031

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\System.exe
      MD5

      7d800ad9f415b03e6bb9a029fa57a3ec

      SHA1

      73d737b77a8fea41dad18dc6cdde0892b0dc9796

      SHA256

      ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145

      SHA512

      5549ec9bdf48419ad8edaceb1120ad4c8ccc0ead7057a7349ca40ccd997c70244eb1c102a4f63e03acd76947a76a0456dc00473458c18509b803451779c5bf0a

    • C:\Users\Admin\AppData\Roaming\System.exe
      MD5

      7d800ad9f415b03e6bb9a029fa57a3ec

      SHA1

      73d737b77a8fea41dad18dc6cdde0892b0dc9796

      SHA256

      ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145

      SHA512

      5549ec9bdf48419ad8edaceb1120ad4c8ccc0ead7057a7349ca40ccd997c70244eb1c102a4f63e03acd76947a76a0456dc00473458c18509b803451779c5bf0a

    • \Users\Admin\AppData\Roaming\System.exe
      MD5

      7d800ad9f415b03e6bb9a029fa57a3ec

      SHA1

      73d737b77a8fea41dad18dc6cdde0892b0dc9796

      SHA256

      ab5bfb7c642e59a9c8a6f372ee4847bf5cbc9222ba8a4459997e7cd64cb97145

      SHA512

      5549ec9bdf48419ad8edaceb1120ad4c8ccc0ead7057a7349ca40ccd997c70244eb1c102a4f63e03acd76947a76a0456dc00473458c18509b803451779c5bf0a

    • memory/964-57-0x0000000000000000-mapping.dmp
    • memory/964-61-0x0000000001FF0000-0x0000000001FF1000-memory.dmp
      Filesize

      4KB

    • memory/1128-54-0x0000000074B41000-0x0000000074B43000-memory.dmp
      Filesize

      8KB

    • memory/1128-55-0x0000000002240000-0x0000000002241000-memory.dmp
      Filesize

      4KB

    • memory/1620-62-0x0000000000000000-mapping.dmp