Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 21:31

General

  • Target
    4b33f2982aa4df81f65b713a7e398b3c.exe
  • Size 5.2MB
  • Sample240521-1c14wsbb52
  • SHA256 e01df4c5286089fb07206d0c3b7c245b5321a88fb9e19e413ca431608a0e7e84
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • njrat

Version
  • Platinum

Botnet
  • HacKed

C2
  • 127.0.0.1:8848

Mutex
  • SecurityHealthService.exe

Attributes
  • reg_key

    SecurityHealthService.exe

  • splitter

    |Ghost|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 21 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b33f2982aa4df81f65b713a7e398b3c.exe
    "C:\Users\Admin\AppData\Local\Temp\4b33f2982aa4df81f65b713a7e398b3c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4072
    • C:\Users\Admin\AppData\Local\Temp\4b33f2982aa4df81f65b713a7e398b3c.exe
      "C:\Users\Admin\AppData\Local\Temp\4b33f2982aa4df81f65b713a7e398b3c.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4160
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\\main.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1900
        • C:\main.exe
          C:\\main.exe
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:2848
          • C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
            "C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe"
            5⤵
            • Drops startup file
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:5016
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /delete /tn "SecurityHealthService" /f
              6⤵
                PID:2944
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                6⤵
                • Creates scheduled task(s)
                PID:1704
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /delete /tn "SecurityHealthService" /f
                6⤵
                  PID:1288
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                  6⤵
                  • Creates scheduled task(s)
                  PID:748
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /delete /tn "SecurityHealthService" /f
                  6⤵
                    PID:2408
                  • C:\Windows\SysWOW64\schtasks.exe
                    schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                    6⤵
                    • Creates scheduled task(s)
                    PID:1056
                  • C:\Windows\SysWOW64\schtasks.exe
                    schtasks /delete /tn "SecurityHealthService" /f
                    6⤵
                      PID:3316
                    • C:\Windows\SysWOW64\schtasks.exe
                      schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                      6⤵
                      • Creates scheduled task(s)
                      PID:4868
                    • C:\Windows\SysWOW64\schtasks.exe
                      schtasks /delete /tn "SecurityHealthService" /f
                      6⤵
                        PID:1652
                      • C:\Windows\SysWOW64\schtasks.exe
                        schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                        6⤵
                        • Creates scheduled task(s)
                        PID:3836
                      • C:\Windows\SysWOW64\schtasks.exe
                        schtasks /delete /tn "SecurityHealthService" /f
                        6⤵
                          PID:2344
                        • C:\Windows\SysWOW64\schtasks.exe
                          schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                          6⤵
                          • Creates scheduled task(s)
                          PID:4180
                        • C:\Windows\SysWOW64\schtasks.exe
                          schtasks /delete /tn "SecurityHealthService" /f
                          6⤵
                            PID:1128
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                            6⤵
                            • Creates scheduled task(s)
                            PID:1744
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /delete /tn "SecurityHealthService" /f
                            6⤵
                              PID:3260
                            • C:\Windows\SysWOW64\schtasks.exe
                              schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                              6⤵
                              • Creates scheduled task(s)
                              PID:4600
                            • C:\Windows\SysWOW64\schtasks.exe
                              schtasks /delete /tn "SecurityHealthService" /f
                              6⤵
                                PID:3880
                              • C:\Windows\SysWOW64\schtasks.exe
                                schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                6⤵
                                • Creates scheduled task(s)
                                PID:4552
                              • C:\Windows\SysWOW64\schtasks.exe
                                schtasks /delete /tn "SecurityHealthService" /f
                                6⤵
                                  PID:2556
                                • C:\Windows\SysWOW64\schtasks.exe
                                  schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                  6⤵
                                  • Creates scheduled task(s)
                                  PID:988
                                • C:\Windows\SysWOW64\schtasks.exe
                                  schtasks /delete /tn "SecurityHealthService" /f
                                  6⤵
                                    PID:4484
                                  • C:\Windows\SysWOW64\schtasks.exe
                                    schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                    6⤵
                                    • Creates scheduled task(s)
                                    PID:2520
                                  • C:\Windows\SysWOW64\schtasks.exe
                                    schtasks /delete /tn "SecurityHealthService" /f
                                    6⤵
                                      PID:3916
                                    • C:\Windows\SysWOW64\schtasks.exe
                                      schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                      6⤵
                                      • Creates scheduled task(s)
                                      PID:100
                                    • C:\Windows\SysWOW64\schtasks.exe
                                      schtasks /delete /tn "SecurityHealthService" /f
                                      6⤵
                                        PID:1536
                                      • C:\Windows\SysWOW64\schtasks.exe
                                        schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                        6⤵
                                        • Creates scheduled task(s)
                                        PID:3372
                                      • C:\Windows\SysWOW64\schtasks.exe
                                        schtasks /delete /tn "SecurityHealthService" /f
                                        6⤵
                                          PID:812
                                        • C:\Windows\SysWOW64\schtasks.exe
                                          schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                          6⤵
                                          • Creates scheduled task(s)
                                          PID:4756
                                        • C:\Windows\SysWOW64\schtasks.exe
                                          schtasks /delete /tn "SecurityHealthService" /f
                                          6⤵
                                            PID:1888
                                          • C:\Windows\SysWOW64\schtasks.exe
                                            schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                            6⤵
                                            • Creates scheduled task(s)
                                            PID:4996
                                          • C:\Windows\SysWOW64\schtasks.exe
                                            schtasks /delete /tn "SecurityHealthService" /f
                                            6⤵
                                              PID:756
                                            • C:\Windows\SysWOW64\schtasks.exe
                                              schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                              6⤵
                                              • Creates scheduled task(s)
                                              PID:1104
                                            • C:\Windows\SysWOW64\schtasks.exe
                                              schtasks /delete /tn "SecurityHealthService" /f
                                              6⤵
                                                PID:2032
                                              • C:\Windows\SysWOW64\schtasks.exe
                                                schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                                6⤵
                                                • Creates scheduled task(s)
                                                PID:3816
                                              • C:\Windows\SysWOW64\schtasks.exe
                                                schtasks /delete /tn "SecurityHealthService" /f
                                                6⤵
                                                  PID:4276
                                                • C:\Windows\SysWOW64\schtasks.exe
                                                  schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                                  6⤵
                                                  • Creates scheduled task(s)
                                                  PID:808
                                                • C:\Windows\SysWOW64\schtasks.exe
                                                  schtasks /delete /tn "SecurityHealthService" /f
                                                  6⤵
                                                    PID:3280
                                                  • C:\Windows\SysWOW64\schtasks.exe
                                                    schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                                    6⤵
                                                    • Creates scheduled task(s)
                                                    PID:3532
                                                  • C:\Windows\SysWOW64\schtasks.exe
                                                    schtasks /delete /tn "SecurityHealthService" /f
                                                    6⤵
                                                      PID:3304
                                                    • C:\Windows\SysWOW64\schtasks.exe
                                                      schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                                      6⤵
                                                      • Creates scheduled task(s)
                                                      PID:3992
                                                    • C:\Windows\SysWOW64\schtasks.exe
                                                      schtasks /delete /tn "SecurityHealthService" /f
                                                      6⤵
                                                        PID:4892
                                                      • C:\Windows\SysWOW64\schtasks.exe
                                                        schtasks /create /sc minute /mo 1 /tn "SecurityHealthService" /tr C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                                        6⤵
                                                        • Creates scheduled task(s)
                                                        PID:2688
                                            • C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                              C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                              1⤵
                                              • Executes dropped EXE
                                              PID:3016
                                            • C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                              C:\Users\Admin\AppData\Roaming\SecurityHealthService.exe
                                              1⤵
                                              • Executes dropped EXE
                                              PID:3672

                                            Network

                                                  MITRE ATT&CK Enterprise v15

                                                  Replay Monitor

                                                  Loading Replay Monitor...

                                                  Downloads

                                                  SecurityHealthService.exe.log

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\SecurityHealthService.exe.log
                                                  • Size 319B
                                                  • SHA256 7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7
                                                  • MD5 SHA1 SHA512

                                                  VCRUNTIME140.dll

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\VCRUNTIME140.dll
                                                  • Size 93KB
                                                  • SHA256 6a0850419432735a98e56857d5cfce97e9d58a947a9863ca6afadd1c7bcab27c
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  _bz2.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\_bz2.pyd
                                                  • Size 84KB
                                                  • SHA256 20895fa331712701ebfdbb9ab87e394309e910f1d782929fd65b59ed76d9c90f
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  _decimal.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\_decimal.pyd
                                                  • Size 264KB
                                                  • SHA256 df19c2e6ec3145166fa8d206c11db78bc1979a027105c4f21d40410b5082ba34
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  _hashlib.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\_hashlib.pyd
                                                  • Size 64KB
                                                  • SHA256 12a84bacb071b1948a9f751ac8d0653ba71a8f6b217a69fe062608e532065c20
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  _lzma.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\_lzma.pyd
                                                  • Size 159KB
                                                  • SHA256 6384ded31408788d35a89dc3f7705ea2928f6bbdeb8b627f0d1b2d7b1ea13e16
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  _socket.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\_socket.pyd
                                                  • Size 78KB
                                                  • SHA256 258a5f0b4d362b2fed80b24eeabcb3cdd1602e32ff79d87225da6d15106b17a6
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  base_library.zip

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\base_library.zip
                                                  • Size 826KB
                                                  • SHA256 151a4c8ea261130b5ae94653e5470ac6fe4663de269c187b2b38d6fccadc1baa
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  libcrypto-1_1.dll

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\libcrypto-1_1.dll
                                                  • Size 3.2MB
                                                  • SHA256 296426e7ce11bc3d1cfa9f2aeb42f60c974da4af3b3efbeb0ba40e92e5299fdf
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  main.zip

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\main.zip
                                                  • Size 65KB
                                                  • SHA256 52507bc59bce399e5db789241fcc171a2ca5c868a8c2c985d3e02364af1a4990
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  python39.dll

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\python39.dll
                                                  • Size 4.3MB
                                                  • SHA256 a56afcf5f3a72769c77c3bc43c9b84197180a8b3380b6258073223bfd72ed47a
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  select.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\select.pyd
                                                  • Size 28KB
                                                  • SHA256 c7ffae6dc927cf10ac5da08614912bb3ad8fc52aa0ef9bc376d831e72dd74460
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  unicodedata.pyd

                                                  • Path C:\Users\Admin\AppData\Local\Temp\_MEI40722\unicodedata.pyd
                                                  • Size 1.1MB
                                                  • SHA256 7f02a99a23cc3ff63ecb10ba6006e2da7bf685530bad43882ebf90d042b9eeb6
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  main.exe

                                                  • Path C:\main.exe
                                                  • Size 65KB
                                                  • SHA256 21f539d71ad30ea865ccf0ee4dfdf6322b4895ce2cf8af67f120c2dfc84af33b
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  memory/2848-32-0x00000000745C2000-0x00000000745C3000-memory.dmp

                                                  memory/2848-34-0x00000000745C0000-0x0000000074B71000-memory.dmp

                                                  memory/2848-33-0x00000000745C0000-0x0000000074B71000-memory.dmp

                                                  memory/2848-44-0x00000000745C0000-0x0000000074B71000-memory.dmp

                                                  memory/5016-45-0x00000000745C0000-0x0000000074B71000-memory.dmp

                                                  memory/5016-46-0x00000000745C0000-0x0000000074B71000-memory.dmp

                                                  memory/5016-50-0x00000000745C0000-0x0000000074B71000-memory.dmp