Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2023, 23:26

General

  • Target
    E2C31090339C37FAF04CE2489EA35E9E22844B5AEF1A0.exe
  • Size 3.2MB
  • Sample230127-3et5gadd93
  • SHA256 e2c31090339c37faf04ce2489ea35e9e22844b5aef1a05022bbff6c6d8a13b68
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • njrat

Version
  • im523

Botnet
  • HacKed

C2
  • 8.tcp.ngrok.io:16388

Mutex
  • 31d1edf88f70475685ebd9b7096d9c3a

Attributes
  • reg_key

    31d1edf88f70475685ebd9b7096d9c3a

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 8 IoCs
  • Executes dropped EXE 9 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 7 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\E2C31090339C37FAF04CE2489EA35E9E22844B5AEF1A0.exe
    "C:\Users\Admin\AppData\Local\Temp\E2C31090339C37FAF04CE2489EA35E9E22844B5AEF1A0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Users\Admin\AppData\Local\Temp\HACK!.EXE
      "C:\Users\Admin\AppData\Local\Temp\HACK!.EXE"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe
        "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe" ZhXl39BlhP84+Y4kurA8wpehxxqA0X22IMYZ6Vpiqs432w7REBR0ZpxYRRDWYk5ltKJkELwM7kgD9fa3R9nS78dKGffMpSweXmZs/Q7n+5ajx9xlEMnletl/NInysBn1+KbAO8Zi8GdQpa6u5yr0gJD3PaHANvD/gCI5W2+Hx2g=
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4916
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
          4⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:2040
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c compile.bat
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:216
            • C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe
              C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_Passwords.txt"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:3704
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
          4⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:4508
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c compile.bat
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4304
            • C:\Users\Admin\AppData\Local\Temp\winhlp32.exe
              C:\Users\Admin\AppData\Local\Temp\winhlp32.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies1"
              6⤵
              • Executes dropped EXE
              PID:4024
            • C:\Users\Admin\AppData\Local\Temp\splwow64.exe
              C:\Users\Admin\AppData\Local\Temp\splwow64.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies2"
              6⤵
              • Executes dropped EXE
              PID:984
            • C:\Users\Admin\AppData\Local\Temp\hh.exe
              C:\Users\Admin\AppData\Local\Temp\hh.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies3"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2836
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
          4⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:4736
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c compile.bat
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1400
            • C:\Users\Admin\AppData\Local\Temp\xwizard.exe
              C:\Users\Admin\AppData\Local\Temp\xwizard.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_History.txt"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:3696
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2236
          • C:\Windows\system32\choice.exe
            choice /C Y /N /D Y /T 3
            5⤵
              PID:3500
      • C:\Users\Admin\AppData\Local\Temp\NJRAT.EXE
        "C:\Users\Admin\AppData\Local\Temp\NJRAT.EXE"
        2⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:5028
        • C:\Users\Admin\AppData\Local\Temp\server.exe
          "C:\Users\Admin\AppData\Local\Temp\server.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3224
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
            4⤵
            • Modifies Windows Firewall
            PID:4284

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          Admin_History.txt

          • Path C:\Users\Admin\AppData\Local\Temp\Admin_History.txt
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512

          Admin_Passwords.txt

          • Path C:\Users\Admin\AppData\Local\Temp\Admin_Passwords.txt
          • Size 4KB
          • SHA256 76d4066990e2ee2776f733a25ce23e9af545fd6f1a3b5760d603bdc05d9402d5
          • MD5 SHA1 SHA512 SSDEEP

          Cookies1

          • Path C:\Users\Admin\AppData\Local\Temp\Cookies1
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512

          Cookies3

          • Path C:\Users\Admin\AppData\Local\Temp\Cookies3
          • Size 11KB
          • SHA256 ec742e4eed9c4179f3546fb4c88cedc5e07b74645f432174d4cf048ed0f66efa
          • MD5 SHA1 SHA512 SSDEEP

          HACK!.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\HACK!.EXE
          • Size 2.8MB
          • SHA256 be1cbb2c70813846a8fc77efafeb14486aa08043d2577481af2f528b4f19974e
          • MD5 SHA1 SHA512 SSDEEP

          HACK!.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\HACK!.EXE
          • Size 2.8MB
          • SHA256 be1cbb2c70813846a8fc77efafeb14486aa08043d2577481af2f528b4f19974e
          • MD5 SHA1 SHA512 SSDEEP

          NJRAT.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\NJRAT.EXE
          • Size 37KB
          • SHA256 f58badb08ed629594cc3629cd805f0c6a36abc3e43f3f29a31b3d380fa908442
          • MD5 SHA1 SHA512 SSDEEP

          NJRAT.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\NJRAT.EXE
          • Size 37KB
          • SHA256 f58badb08ed629594cc3629cd805f0c6a36abc3e43f3f29a31b3d380fa908442
          • MD5 SHA1 SHA512 SSDEEP

          RtkBtManServ.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe
          • Size 2.8MB
          • SHA256 f4fb42c8312a6002a8783e2a1ab4571eb89e92cd192b1a21e8c4582205c37312
          • MD5 SHA1 SHA512 SSDEEP

          RtkBtManServ.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe
          • Size 2.8MB
          • SHA256 f4fb42c8312a6002a8783e2a1ab4571eb89e92cd192b1a21e8c4582205c37312
          • MD5 SHA1 SHA512 SSDEEP

          compile.bat

          • Path C:\Users\Admin\AppData\Local\Temp\compile.bat
          • Size 74B
          • SHA256 f465a1bd2f9a3efcf0589f0b1c234d285f2bebf7416b324271d987a282915ca8
          • MD5 SHA1 SHA512

          compile.bat

          • Path C:\Users\Admin\AppData\Local\Temp\compile.bat
          • Size 156B
          • SHA256 db903aae119dc795581080a528ba04286be11be7e9d417305d77123545fbf0f9
          • MD5 SHA1 SHA512

          compile.bat

          • Path C:\Users\Admin\AppData\Local\Temp\compile.bat
          • Size 71B
          • SHA256 50801c4db374acec11831bf7602cd2635bc8964800c67217b25683dce4a45873
          • MD5 SHA1 SHA512

          compile.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\compile.vbs
          • Size 265B
          • SHA256 abf09cb96f4c04a1d2d2bfd7184da63dd79c2109b1a768ca5dae4265def39eee
          • MD5 SHA1 SHA512

          compile.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\compile.vbs
          • Size 265B
          • SHA256 abf09cb96f4c04a1d2d2bfd7184da63dd79c2109b1a768ca5dae4265def39eee
          • MD5 SHA1 SHA512

          compile.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\compile.vbs
          • Size 265B
          • SHA256 abf09cb96f4c04a1d2d2bfd7184da63dd79c2109b1a768ca5dae4265def39eee
          • MD5 SHA1 SHA512

          config

          • Path C:\Users\Admin\AppData\Local\Temp\config
          • Size 108B
          • SHA256 68c4ec552c98f3b5a4744e4eefadd6364dc8075c2e718b7bcbfc76625aa60d03
          • MD5 SHA1 SHA512

          hh.exe

          • Path C:\Users\Admin\AppData\Local\Temp\hh.exe
          • Size 103KB
          • SHA256 4182172a01bdfc08c5cf7e8652f7d9d81858345a770e2b6b507840e4c1c7764f
          • MD5 SHA1 SHA512 SSDEEP

          hh.exe

          • Path C:\Users\Admin\AppData\Local\Temp\hh.exe
          • Size 103KB
          • SHA256 4182172a01bdfc08c5cf7e8652f7d9d81858345a770e2b6b507840e4c1c7764f
          • MD5 SHA1 SHA512 SSDEEP

          server.exe

          • Path C:\Users\Admin\AppData\Local\Temp\server.exe
          • Size 37KB
          • SHA256 f58badb08ed629594cc3629cd805f0c6a36abc3e43f3f29a31b3d380fa908442
          • MD5 SHA1 SHA512 SSDEEP

          server.exe

          • Path C:\Users\Admin\AppData\Local\Temp\server.exe
          • Size 37KB
          • SHA256 f58badb08ed629594cc3629cd805f0c6a36abc3e43f3f29a31b3d380fa908442
          • MD5 SHA1 SHA512 SSDEEP

          snuvcdsm.exe

          • Path C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe
          • Size 391KB
          • SHA256 f999357a17e672e87fbed66d14ba2bebd6fb04e058a1aae0f0fdc49a797f58fe
          • MD5 SHA1 SHA512 SSDEEP

          snuvcdsm.exe

          • Path C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe
          • Size 391KB
          • SHA256 f999357a17e672e87fbed66d14ba2bebd6fb04e058a1aae0f0fdc49a797f58fe
          • MD5 SHA1 SHA512 SSDEEP

          splwow64.exe

          • Path C:\Users\Admin\AppData\Local\Temp\splwow64.exe
          • Size 49KB
          • SHA256 ebff7d07efda7245192ce6ecd7767578152b515b510c887ca2880a2566071f64
          • MD5 SHA1 SHA512 SSDEEP

          splwow64.exe

          • Path C:\Users\Admin\AppData\Local\Temp\splwow64.exe
          • Size 49KB
          • SHA256 ebff7d07efda7245192ce6ecd7767578152b515b510c887ca2880a2566071f64
          • MD5 SHA1 SHA512 SSDEEP

          whysosad

          • Path C:\Users\Admin\AppData\Local\Temp\whysosad
          • Size 3KB
          • SHA256 1637ce704a463bd3c91a38aa02d1030107670f91ee3f0dd4fa13d07a77ba2664
          • MD5 SHA1 SHA512

          winhlp32.exe

          • Path C:\Users\Admin\AppData\Local\Temp\winhlp32.exe
          • Size 184KB
          • SHA256 071e26ddf5323dd9ed6671bcde89df73d78bac2336070e6cb9e3e4b93bde78d1
          • MD5 SHA1 SHA512 SSDEEP

          winhlp32.exe

          • Path C:\Users\Admin\AppData\Local\Temp\winhlp32.exe
          • Size 184KB
          • SHA256 071e26ddf5323dd9ed6671bcde89df73d78bac2336070e6cb9e3e4b93bde78d1
          • MD5 SHA1 SHA512 SSDEEP

          xwizard.cfg

          • Path C:\Users\Admin\AppData\Local\Temp\xwizard.cfg
          • Size 1KB
          • SHA256 3f6ca2bc068c8436044daab867f8ff8f75060048b29882cb2ac9fdef1800df9e
          • MD5 SHA1 SHA512

          xwizard.exe

          • Path C:\Users\Admin\AppData\Local\Temp\xwizard.exe
          • Size 544KB
          • SHA256 deb1246347ce88e8cdd63a233a64bc2090b839f2d933a3097a2fd8fd913c4112
          • MD5 SHA1 SHA512 SSDEEP

          xwizard.exe

          • Path C:\Users\Admin\AppData\Local\Temp\xwizard.exe
          • Size 544KB
          • SHA256 deb1246347ce88e8cdd63a233a64bc2090b839f2d933a3097a2fd8fd913c4112
          • MD5 SHA1 SHA512 SSDEEP

          memory/984-182-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1944-136-0x0000025A448B0000-0x0000025A44B8E000-memory.dmp

          memory/1944-139-0x00007FFE53930000-0x00007FFE543F1000-memory.dmp

          memory/1944-145-0x00007FFE53930000-0x00007FFE543F1000-memory.dmp

          memory/3224-198-0x0000000075190000-0x0000000075741000-memory.dmp

          memory/3224-152-0x0000000075190000-0x0000000075741000-memory.dmp

          memory/4024-180-0x0000000000400000-0x000000000045B000-memory.dmp

          memory/4916-156-0x00000215EC1E0000-0x00000215EC1E8000-memory.dmp

          memory/4916-155-0x00000215EC1B0000-0x00000215EC1CA000-memory.dmp

          memory/4916-144-0x00000215E8AB0000-0x00000215E8D8A000-memory.dmp

          memory/4916-154-0x00000215EC180000-0x00000215EC1A2000-memory.dmp

          memory/4916-146-0x00007FFE53930000-0x00007FFE543F1000-memory.dmp

          memory/4916-157-0x00000215EC4C0000-0x00000215EC4DE000-memory.dmp

          memory/4916-147-0x00000215EB530000-0x00000215EB5A6000-memory.dmp

          memory/4916-196-0x00007FFE53930000-0x00007FFE543F1000-memory.dmp

          memory/4916-166-0x00007FFE53930000-0x00007FFE543F1000-memory.dmp

          memory/5028-140-0x0000000075190000-0x0000000075741000-memory.dmp

          memory/5028-151-0x0000000075190000-0x0000000075741000-memory.dmp