Analysis

  • max time kernel
    175s
  • max time network
    245s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    12/11/2022, 22:35

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:1380
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {3F9217A9-93B4-4CE1-9931-AD3DCE7E5A62} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:980
    • C:\ProgramData\pciu\miwkdja.exe
      C:\ProgramData\pciu\miwkdja.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:1484
    • C:\ProgramData\pciu\miwkdja.exe
      C:\ProgramData\pciu\miwkdja.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:1272

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\pciu\miwkdja.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • C:\ProgramData\pciu\miwkdja.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • C:\ProgramData\pciu\miwkdja.exe

          Filesize

          2.2MB

          MD5

          3aad6e79569fcc68f0b8530225e08743

          SHA1

          e1247952bedea6d68c471b779d673167d5e1d774

          SHA256

          efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

          SHA512

          b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

        • memory/1272-69-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1272-73-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1272-72-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1272-71-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1380-55-0x00000000757A1000-0x00000000757A3000-memory.dmp

          Filesize

          8KB

        • memory/1380-65-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1380-54-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1380-57-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1380-62-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1380-56-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1484-64-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB

        • memory/1484-66-0x0000000077210000-0x0000000077390000-memory.dmp

          Filesize

          1.5MB

        • memory/1484-61-0x0000000000400000-0x00000000009C3000-memory.dmp

          Filesize

          5.8MB