Resubmissions

15/06/2025, 19:42

250615-yenkgabj3t10

09/02/2025, 03:10

250209-dn49cstkez10

08/06/2024, 08:50

240608-krvyesae9110

08/05/2024, 16:15

240508-tqnx6ach3w10

08/05/2024, 16:07

240508-tkr3mafa5410

01/05/2024, 18:02

240501-wmf49acg3s6

27/04/2024, 08:46

240427-kpfeysff8s10

26/04/2024, 17:56

240426-wh2v6ahg8v

25/04/2024, 21:25

240425-z9y55afb7v10

25/04/2024, 21:16

240425-z4pphafa9710

Analysis

  • max time kernel
    32s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    27/04/2024, 08:46

General

  • Target
    Ana.exe
  • Size 2.1MB
  • Sample240427-kpfeysff8s
  • SHA256 117d7af0deb40b3fe532bb6cbe374884fa55ed7cfe053fe698720cdccb5a59cb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 14 IoCs
  • UPX packed file 8 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ana.exe
    "C:\Users\Admin\AppData\Local\Temp\Ana.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\AV.EXE
      "C:\Users\Admin\AppData\Local\Temp\AV.EXE"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Users\Admin\AppData\Roaming\RtlDriver32.exe
        "C:\Users\Admin\AppData\Roaming\RtlDriver32.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2824
    • C:\Users\Admin\AppData\Local\Temp\AV2.EXE
      "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\ProgramData\bD17766JeFjH17766\bD17766JeFjH17766.exe
        "C:\ProgramData\bD17766JeFjH17766\bD17766JeFjH17766.exe" "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:1308
    • C:\Users\Admin\AppData\Local\Temp\DB.EXE
      "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
      2⤵
      • Adds policy Run key to start application
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3028
      • C:\Windows\SysWOW64\typelibc.exe
        C:\Windows\SysWOW64\typelibc.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:344
        • C:\Windows\SysWOW64\ipconfig.exe
          "C:\Windows\system32\ipconfig.exe" /flushdns
          4⤵
          • Gathers network information
          PID:2332
      • C:\Windows\SysWOW64\cmd.exe
        /c C:\Users\Admin\AppData\Local\Temp\~unins5560.bat "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
        3⤵
          PID:348
      • C:\Users\Admin\AppData\Local\Temp\EN.EXE
        "C:\Users\Admin\AppData\Local\Temp\EN.EXE"
        2⤵
        • Executes dropped EXE
        PID:2628
      • C:\Users\Admin\AppData\Local\Temp\SB.EXE
        "C:\Users\Admin\AppData\Local\Temp\SB.EXE"
        2⤵
        • Executes dropped EXE
        • Writes to the Master Boot Record (MBR)
        • Suspicious use of AdjustPrivilegeToken
        PID:2468

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          bD17766JeFjH17766

          • Path C:\ProgramData\bD17766JeFjH17766\bD17766JeFjH17766
          • Size 208B
          • SHA256 88b6a5402e29988a3abc8b7d67346ff51f968c1fdde3869a8659723947feafad
          • MD5 SHA1 SHA512

          AV2.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\AV2.EXE
          • Size 368KB
          • SHA256 4ce5e8b510895abb204f97e883d8cbaacc29ccef0844d9ae81f8666f234b0529
          • MD5 SHA1 SHA512 SSDEEP

          DB.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\DB.EXE
          • Size 243KB
          • SHA256 b5a255d0454853c8afc0b321e1d86dca22c3dbefb88e5d385d2d72f9bc0109e6
          • MD5 SHA1 SHA512 SSDEEP

          EN.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\EN.EXE
          • Size 6KB
          • SHA256 c17a18cf2c243303b8a6688aad83b3e6e9b727fcd89f69065785ef7f1a2a3e38
          • MD5 SHA1 SHA512 SSDEEP

          tsa.crt

          • Path C:\Users\Admin\AppData\Local\Temp\tsa.crt
          • Size 1010B
          • SHA256 2563fe2f793f119a1bae5cca6eab9d8c20409aa1f1e0db341c623e1251244ef5
          • MD5 SHA1 SHA512

          ~unins5560.bat

          • Path C:\Users\Admin\AppData\Local\Temp\~unins5560.bat
          • Size 49B
          • SHA256 97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32
          • MD5 SHA1 SHA512

          bD17766JeFjH17766.exe

          • Path \ProgramData\bD17766JeFjH17766\bD17766JeFjH17766.exe
          • Size 368KB
          • SHA256 ad717443ef9258d7d36d9147662a7b4bbe21fec4af651720952045947288b134
          • MD5 SHA1 SHA512 SSDEEP

          AV.EXE

          • Path \Users\Admin\AppData\Local\Temp\AV.EXE
          • Size 1.1MB
          • SHA256 26c8f13ea8dc17443a9fa005610537cb6700aebaf748e747e9278d504e416eb1
          • MD5 SHA1 SHA512 SSDEEP

          SB.EXE

          • Path \Users\Admin\AppData\Local\Temp\SB.EXE
          • Size 224KB
          • SHA256 ce822ff86e584f15b6abd14c61453bd3b481d4ec3fdeb961787fceb52acd8bd6
          • MD5 SHA1 SHA512 SSDEEP

          typelibc.exe

          • Path \Windows\SysWOW64\typelibc.exe
          • Size 101KB
          • SHA256 8ee65ac19b38fbc953f8ff8e04e856b582c35fd47d04cbe85d75963f2679c70b
          • MD5 SHA1 SHA512 SSDEEP

          memory/1252-182-0x0000000002270000-0x00000000022B0000-memory.dmp

          memory/1252-44-0x0000000002270000-0x00000000022B0000-memory.dmp

          memory/1748-91-0x00000000003C0000-0x00000000003C1000-memory.dmp

          memory/2220-42-0x0000000000300000-0x000000000030A000-memory.dmp

          memory/2220-30-0x0000000000A00000-0x0000000000A45000-memory.dmp

          memory/2220-41-0x0000000000300000-0x000000000030A000-memory.dmp

          memory/2628-181-0x0000000000400000-0x000000000040A000-memory.dmp

          memory/2628-43-0x0000000000400000-0x000000000040A000-memory.dmp

          memory/3028-27-0x0000000000560000-0x00000000005F3000-memory.dmp

          memory/3028-31-0x0000000000560000-0x00000000005F3000-memory.dmp

          memory/3028-32-0x0000000000560000-0x00000000005F3000-memory.dmp

          memory/3028-33-0x0000000000400000-0x0000000000445000-memory.dmp