Analysis

  • max time kernel
    149s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    23-09-2021 08:11

General

  • Target

    fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8.exe

  • Size

    343KB

  • MD5

    2a9d804a886fdaf9cbed38acb6f2166e

  • SHA1

    6ab3b296c0d29c340ef870df8f401a0a578ab404

  • SHA256

    fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8

  • SHA512

    1051fd46e763ec5d1edaa6b1bf64d479d5aef2dd527905e5b42701acd8e32ff4dc58429167ebe26c46c103116fbbfd2a1223962938ee18ba7b5c96d3b6cc3c08

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
  • 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\fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8.exe
    "C:\Users\Admin\AppData\Local\Temp\fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
        3⤵
          PID:956

    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\svchost.exe
      MD5

      2a9d804a886fdaf9cbed38acb6f2166e

      SHA1

      6ab3b296c0d29c340ef870df8f401a0a578ab404

      SHA256

      fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8

      SHA512

      1051fd46e763ec5d1edaa6b1bf64d479d5aef2dd527905e5b42701acd8e32ff4dc58429167ebe26c46c103116fbbfd2a1223962938ee18ba7b5c96d3b6cc3c08

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

      2a9d804a886fdaf9cbed38acb6f2166e

      SHA1

      6ab3b296c0d29c340ef870df8f401a0a578ab404

      SHA256

      fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8

      SHA512

      1051fd46e763ec5d1edaa6b1bf64d479d5aef2dd527905e5b42701acd8e32ff4dc58429167ebe26c46c103116fbbfd2a1223962938ee18ba7b5c96d3b6cc3c08

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

      2a9d804a886fdaf9cbed38acb6f2166e

      SHA1

      6ab3b296c0d29c340ef870df8f401a0a578ab404

      SHA256

      fadb5aef63fcc65c3243a246021cd60797451bd3e8efdba102ecd9b34aa178e8

      SHA512

      1051fd46e763ec5d1edaa6b1bf64d479d5aef2dd527905e5b42701acd8e32ff4dc58429167ebe26c46c103116fbbfd2a1223962938ee18ba7b5c96d3b6cc3c08

    • memory/944-56-0x0000000000000000-mapping.dmp
    • memory/944-60-0x0000000001F20000-0x0000000001F21000-memory.dmp
      Filesize

      4KB

    • memory/956-61-0x0000000000000000-mapping.dmp
    • memory/1756-53-0x0000000076961000-0x0000000076963000-memory.dmp
      Filesize

      8KB

    • memory/1756-54-0x0000000001F40000-0x0000000001F41000-memory.dmp
      Filesize

      4KB