Analysis

  • max time kernel
    153s
  • max time network
    179s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    29-09-2021 23:08

General

  • Target

    2EBCA90B91D537CCF128E52E55D48BD2AC2563319DC07.exe

  • Size

    144KB

  • MD5

    6d0941f64b7968007db7eef0a06a0cca

  • SHA1

    0a9fe217013e7a27134ee5633f1c5e750b0604a6

  • SHA256

    2ebca90b91d537ccf128e52e55d48bd2ac2563319dc07f9435942c42df9a4d8d

  • SHA512

    dc85440765df6479284e08be40afc717631dab8fe9e150a32c456a12455fefb47164979652da87d42e7d0beb6f383bf8f762c124dc871365b6f41eea539c9ecc

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 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2EBCA90B91D537CCF128E52E55D48BD2AC2563319DC07.exe
    "C:\Users\Admin\AppData\Local\Temp\2EBCA90B91D537CCF128E52E55D48BD2AC2563319DC07.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
          PID:1876

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      6d0941f64b7968007db7eef0a06a0cca

      SHA1

      0a9fe217013e7a27134ee5633f1c5e750b0604a6

      SHA256

      2ebca90b91d537ccf128e52e55d48bd2ac2563319dc07f9435942c42df9a4d8d

      SHA512

      dc85440765df6479284e08be40afc717631dab8fe9e150a32c456a12455fefb47164979652da87d42e7d0beb6f383bf8f762c124dc871365b6f41eea539c9ecc

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

      6d0941f64b7968007db7eef0a06a0cca

      SHA1

      0a9fe217013e7a27134ee5633f1c5e750b0604a6

      SHA256

      2ebca90b91d537ccf128e52e55d48bd2ac2563319dc07f9435942c42df9a4d8d

      SHA512

      dc85440765df6479284e08be40afc717631dab8fe9e150a32c456a12455fefb47164979652da87d42e7d0beb6f383bf8f762c124dc871365b6f41eea539c9ecc

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

      6d0941f64b7968007db7eef0a06a0cca

      SHA1

      0a9fe217013e7a27134ee5633f1c5e750b0604a6

      SHA256

      2ebca90b91d537ccf128e52e55d48bd2ac2563319dc07f9435942c42df9a4d8d

      SHA512

      dc85440765df6479284e08be40afc717631dab8fe9e150a32c456a12455fefb47164979652da87d42e7d0beb6f383bf8f762c124dc871365b6f41eea539c9ecc

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

      6d0941f64b7968007db7eef0a06a0cca

      SHA1

      0a9fe217013e7a27134ee5633f1c5e750b0604a6

      SHA256

      2ebca90b91d537ccf128e52e55d48bd2ac2563319dc07f9435942c42df9a4d8d

      SHA512

      dc85440765df6479284e08be40afc717631dab8fe9e150a32c456a12455fefb47164979652da87d42e7d0beb6f383bf8f762c124dc871365b6f41eea539c9ecc

    • memory/268-64-0x0000000000000000-mapping.dmp
    • memory/268-68-0x0000000000940000-0x0000000000941000-memory.dmp
      Filesize

      4KB

    • memory/1832-60-0x0000000075801000-0x0000000075803000-memory.dmp
      Filesize

      8KB

    • memory/1832-61-0x0000000000420000-0x0000000000421000-memory.dmp
      Filesize

      4KB

    • memory/1876-69-0x0000000000000000-mapping.dmp