Analysis

  • max time kernel
    150s
  • max time network
    165s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13-08-2021 12:39

General

  • Target

    37A8EE92838E77CF667250CEDD0CECF8.exe

  • Size

    501KB

  • MD5

    37a8ee92838e77cf667250cedd0cecf8

  • SHA1

    1c63553822af742ee07fb27865c51b54b74f1a27

  • SHA256

    a1912487964fbfa6a9004a0889bde004a7b3d007e98706b79688bbb6229af557

  • SHA512

    d943bcfccfa3710a6c311dfb4f13325a1fb39f77392897928e196b07d4c2209aa44e959d9b265530a7c0adfdf87db9950997d729b9811c541c2ff531f69e115c

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

imfares.ddns.net:9090

doza122.con-ip.com:5552

Mutex

21010c58298d9aa69d2fa375e98ef354

Attributes
  • reg_key

    21010c58298d9aa69d2fa375e98ef354

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 4 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37A8EE92838E77CF667250CEDD0CECF8.exe
    "C:\Users\Admin\AppData\Local\Temp\37A8EE92838E77CF667250CEDD0CECF8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Users\Admin\AppData\Local\Temp\Server.exe
      "C:\Users\Admin\AppData\Local\Temp\Server.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2388
      • C:\Users\Admin\AppData\Local\Temp\ss.exe
        "C:\Users\Admin\AppData\Local\Temp\ss.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2008
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\ss.exe" "ss.exe" ENABLE
          4⤵
            PID:2136
      • C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe
        "C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3200
        • C:\Users\Admin\AppData\Roaming\midia.exe
          "C:\Users\Admin\AppData\Roaming\midia.exe"
          3⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3960
          • C:\Windows\SYSTEM32\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\midia.exe" "midia.exe" ENABLE
            4⤵
              PID:1100

      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\Local\Temp\Server.exe
        MD5

        cdbb79508d72203c58609d91d047e301

        SHA1

        7393e8ff013e34d5f6dd25f826a65a93e35c4187

        SHA256

        57ccaf6d672e35215ba32b6591bc0a28bfeade9b5bf8b70afa5b9d2ba7346e3f

        SHA512

        92a126b7b128ecc30256ac0e4482b5d74b5182371874271f032c9cf61d526f26830999310ee0970ed735660f50cba73b4ba9847a140f0f329cf5fd8fe26a994e

      • C:\Users\Admin\AppData\Local\Temp\Server.exe
        MD5

        cdbb79508d72203c58609d91d047e301

        SHA1

        7393e8ff013e34d5f6dd25f826a65a93e35c4187

        SHA256

        57ccaf6d672e35215ba32b6591bc0a28bfeade9b5bf8b70afa5b9d2ba7346e3f

        SHA512

        92a126b7b128ecc30256ac0e4482b5d74b5182371874271f032c9cf61d526f26830999310ee0970ed735660f50cba73b4ba9847a140f0f329cf5fd8fe26a994e

      • C:\Users\Admin\AppData\Local\Temp\ss.exe
        MD5

        cdbb79508d72203c58609d91d047e301

        SHA1

        7393e8ff013e34d5f6dd25f826a65a93e35c4187

        SHA256

        57ccaf6d672e35215ba32b6591bc0a28bfeade9b5bf8b70afa5b9d2ba7346e3f

        SHA512

        92a126b7b128ecc30256ac0e4482b5d74b5182371874271f032c9cf61d526f26830999310ee0970ed735660f50cba73b4ba9847a140f0f329cf5fd8fe26a994e

      • C:\Users\Admin\AppData\Local\Temp\ss.exe
        MD5

        cdbb79508d72203c58609d91d047e301

        SHA1

        7393e8ff013e34d5f6dd25f826a65a93e35c4187

        SHA256

        57ccaf6d672e35215ba32b6591bc0a28bfeade9b5bf8b70afa5b9d2ba7346e3f

        SHA512

        92a126b7b128ecc30256ac0e4482b5d74b5182371874271f032c9cf61d526f26830999310ee0970ed735660f50cba73b4ba9847a140f0f329cf5fd8fe26a994e

      • C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe
        MD5

        af290b8ff78113678bd4828d9e446ad6

        SHA1

        68581f15f701792ef96e95bbfce8b072648b9a70

        SHA256

        7cbea2906a3099a25b10fd3019a29a5b0f811181e99615dac59c807ff38f6a7a

        SHA512

        9d895d28271bf392b0294eff8af6415a9d31683c848515ea1079f5612ea807ade6e22e58fe7bc3636a3238c68e2e0aaae49505629cecc02d7eb14eaddd456f05

      • C:\Users\Admin\AppData\Local\Temp\windowsdefender.exe
        MD5

        af290b8ff78113678bd4828d9e446ad6

        SHA1

        68581f15f701792ef96e95bbfce8b072648b9a70

        SHA256

        7cbea2906a3099a25b10fd3019a29a5b0f811181e99615dac59c807ff38f6a7a

        SHA512

        9d895d28271bf392b0294eff8af6415a9d31683c848515ea1079f5612ea807ade6e22e58fe7bc3636a3238c68e2e0aaae49505629cecc02d7eb14eaddd456f05

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

        af290b8ff78113678bd4828d9e446ad6

        SHA1

        68581f15f701792ef96e95bbfce8b072648b9a70

        SHA256

        7cbea2906a3099a25b10fd3019a29a5b0f811181e99615dac59c807ff38f6a7a

        SHA512

        9d895d28271bf392b0294eff8af6415a9d31683c848515ea1079f5612ea807ade6e22e58fe7bc3636a3238c68e2e0aaae49505629cecc02d7eb14eaddd456f05

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

        af290b8ff78113678bd4828d9e446ad6

        SHA1

        68581f15f701792ef96e95bbfce8b072648b9a70

        SHA256

        7cbea2906a3099a25b10fd3019a29a5b0f811181e99615dac59c807ff38f6a7a

        SHA512

        9d895d28271bf392b0294eff8af6415a9d31683c848515ea1079f5612ea807ade6e22e58fe7bc3636a3238c68e2e0aaae49505629cecc02d7eb14eaddd456f05

      • memory/1100-138-0x0000000000000000-mapping.dmp
      • memory/2008-119-0x0000000000000000-mapping.dmp
      • memory/2008-122-0x0000000002B50000-0x0000000002B51000-memory.dmp
        Filesize

        4KB

      • memory/2136-130-0x0000000000000000-mapping.dmp
      • memory/2388-114-0x0000000000000000-mapping.dmp
      • memory/2388-118-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
        Filesize

        4KB

      • memory/3200-126-0x0000000000BF0000-0x0000000000BF1000-memory.dmp
        Filesize

        4KB

      • memory/3200-128-0x0000000001150000-0x0000000001156000-memory.dmp
        Filesize

        24KB

      • memory/3200-129-0x000000001CDF0000-0x000000001CDF2000-memory.dmp
        Filesize

        8KB

      • memory/3200-123-0x0000000000000000-mapping.dmp
      • memory/3944-117-0x0000000002DB0000-0x0000000002DB2000-memory.dmp
        Filesize

        8KB

      • memory/3960-131-0x0000000000000000-mapping.dmp
      • memory/3960-137-0x000000001B5E0000-0x000000001B5E2000-memory.dmp
        Filesize

        8KB