Analysis

  • max time kernel
    204s
  • max time network
    268s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    13/11/2022, 05:14

General

  • Target

    efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe

  • Size

    2.2MB

  • MD5

    3aad6e79569fcc68f0b8530225e08743

  • SHA1

    e1247952bedea6d68c471b779d673167d5e1d774

  • SHA256

    efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

  • SHA512

    b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

  • SSDEEP

    49152:Il8pLho6EEJZHFqdBiNz0ywwO++wddZHyo:8ULxEaHr0ywwO+RZHyo

Score
10/10

Malware Config

Extracted

Family

systembc

C2

cryptotab.me:4001

Signatures

  • SystemBC

    SystemBC is a proxy and remote administration tool first seen in 2019.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 3 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe
    "C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1128
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {83A76972-6FAD-4620-A3F9-0347C79D407F} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\ProgramData\jtfnc\ptbwe.exe
      C:\ProgramData\jtfnc\ptbwe.exe start2
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:856
    • C:\ProgramData\jtfnc\ptbwe.exe
      C:\ProgramData\jtfnc\ptbwe.exe start2
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:1820

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\jtfnc\ptbwe.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • C:\ProgramData\jtfnc\ptbwe.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • C:\ProgramData\jtfnc\ptbwe.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • memory/856-61-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/856-66-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB

        • memory/856-64-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1128-62-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB

        • memory/1128-54-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1128-57-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1128-65-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB

        • memory/1128-56-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB

        • memory/1128-55-0x0000000076961000-0x0000000076963000-memory.dmp

          Filesize

          8KB

        • memory/1820-69-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1820-71-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB

        • memory/1820-72-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1820-73-0x0000000077D50000-0x0000000077ED0000-memory.dmp

          Filesize

          1.5MB