Analysis

  • max time kernel
    149s
  • max time network
    184s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    18-09-2021 18:01

General

  • Target

    01C0C4F5A39A9AD6FB6E98D41BFF8284FBD5FB8C57E3F.exe

  • Size

    61KB

  • MD5

    2f380fb35a4e38df693dbe4250388050

  • SHA1

    3eef31f16de114ed279dfa0c5cf453b598bfe64a

  • SHA256

    01c0c4f5a39a9ad6fb6e98d41bff8284fbd5fb8c57e3f7d0c061b99d9690c743

  • SHA512

    34ad105fc09740015e9a37a4f1a4eb0833da05893e33e42d73c9043029733fd7f81a0458e5f68d02ecf5668b8543195419880f870e3c1591780381220790a189

Malware Config

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 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 33 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01C0C4F5A39A9AD6FB6E98D41BFF8284FBD5FB8C57E3F.exe
    "C:\Users\Admin\AppData\Local\Temp\01C0C4F5A39A9AD6FB6E98D41BFF8284FBD5FB8C57E3F.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\ProgramData\Windows Defender.exe
      "C:\ProgramData\Windows Defender.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1828
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\Windows Defender.exe" "Windows Defender.exe" ENABLE
        3⤵
          PID:776

    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:\ProgramData\Windows Defender.exe
      MD5

      2f380fb35a4e38df693dbe4250388050

      SHA1

      3eef31f16de114ed279dfa0c5cf453b598bfe64a

      SHA256

      01c0c4f5a39a9ad6fb6e98d41bff8284fbd5fb8c57e3f7d0c061b99d9690c743

      SHA512

      34ad105fc09740015e9a37a4f1a4eb0833da05893e33e42d73c9043029733fd7f81a0458e5f68d02ecf5668b8543195419880f870e3c1591780381220790a189

    • C:\ProgramData\Windows Defender.exe
      MD5

      2f380fb35a4e38df693dbe4250388050

      SHA1

      3eef31f16de114ed279dfa0c5cf453b598bfe64a

      SHA256

      01c0c4f5a39a9ad6fb6e98d41bff8284fbd5fb8c57e3f7d0c061b99d9690c743

      SHA512

      34ad105fc09740015e9a37a4f1a4eb0833da05893e33e42d73c9043029733fd7f81a0458e5f68d02ecf5668b8543195419880f870e3c1591780381220790a189

    • \ProgramData\Windows Defender.exe
      MD5

      2f380fb35a4e38df693dbe4250388050

      SHA1

      3eef31f16de114ed279dfa0c5cf453b598bfe64a

      SHA256

      01c0c4f5a39a9ad6fb6e98d41bff8284fbd5fb8c57e3f7d0c061b99d9690c743

      SHA512

      34ad105fc09740015e9a37a4f1a4eb0833da05893e33e42d73c9043029733fd7f81a0458e5f68d02ecf5668b8543195419880f870e3c1591780381220790a189

    • memory/776-68-0x0000000000000000-mapping.dmp
    • memory/1828-63-0x0000000000000000-mapping.dmp
    • memory/1828-67-0x0000000001F20000-0x0000000001F21000-memory.dmp
      Filesize

      4KB

    • memory/1828-70-0x0000000001F21000-0x0000000001F22000-memory.dmp
      Filesize

      4KB

    • memory/1968-60-0x00000000767B1000-0x00000000767B3000-memory.dmp
      Filesize

      8KB

    • memory/1968-61-0x0000000000150000-0x0000000000151000-memory.dmp
      Filesize

      4KB