Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/11/2022, 12:01

General

  • Target

    614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe

  • Size

    2.5MB

  • MD5

    efa05fbe474e6b3b28e3bc4ba1a74a54

  • SHA1

    540f0d462bfa9bf688ee0dd3a9aaead7aeec0fa1

  • SHA256

    614d8a0cfd93b3ab2f4e01ea490ba9d350f7ea786a18b54785581777df71b371

  • SHA512

    e2f673c268b96b891cdf3832e3cc554ffa2bd192eee6b6983612f8fe8483994fe071c084394b2ad1aa3659fb354d1c3fd07308bdbc5f78345763e6ba504b18f5

  • SSDEEP

    49152:wrk48V+6H3aJjU/IbKijgent+AjT368LGvQJtOMxqw+Uc7Vxh0:1t3aFU/TijRnPn3ZLGvCtOMQw+r

Score
10/10

Malware Config

Extracted

Family

systembc

C2

n20b28tu.info:4248

n20b28tu88.info:4248

slavelever.info:4248

slavelevereoewl.info:4248

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 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks BIOS information in registry 2 TTPs 8 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Drops file in Windows directory 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe
    "C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.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:716
  • C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe
    C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe start
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:4972
  • C:\Windows\TEMP\bfkn.exe
    C:\Windows\TEMP\bfkn.exe
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1244
  • C:\Windows\TEMP\bfkn.exe
    C:\Windows\TEMP\bfkn.exe start
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:4892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\TEMP\bfkn.exe

          Filesize

          2.0MB

          MD5

          dd3a5df905b4aca6028903b83919514a

          SHA1

          801fc5875148a0a648e6e246dcbd1ce0ad6c007f

          SHA256

          56ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957

          SHA512

          34bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1

        • C:\Windows\Tasks\wow64.job

          Filesize

          352B

          MD5

          68667eb391c47b343427836ba16952ec

          SHA1

          8812c6573d5f02a1436e5c82a36ff430ed9b987c

          SHA256

          3de88331dc719e45e458fbb26a4527dfead1c82624e1d1785b226d66bda8fe1a

          SHA512

          c3d67a479dd610de1d09a59a025dd08189186cadf2fa107f2ae3f15fa2f460f909d568d6a8d878f2cb167718f2b02d4eedfd513b0be16057378bd1d2448ba594

        • C:\Windows\Temp\bfkn.exe

          Filesize

          2.0MB

          MD5

          dd3a5df905b4aca6028903b83919514a

          SHA1

          801fc5875148a0a648e6e246dcbd1ce0ad6c007f

          SHA256

          56ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957

          SHA512

          34bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1

        • C:\Windows\Temp\bfkn.exe

          Filesize

          2.0MB

          MD5

          dd3a5df905b4aca6028903b83919514a

          SHA1

          801fc5875148a0a648e6e246dcbd1ce0ad6c007f

          SHA256

          56ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957

          SHA512

          34bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1

        • memory/716-133-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/716-134-0x0000000000400000-0x0000000000922000-memory.dmp

          Filesize

          5.1MB

        • memory/716-132-0x0000000000400000-0x0000000000922000-memory.dmp

          Filesize

          5.1MB

        • memory/716-138-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/716-140-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/1244-147-0x0000000000400000-0x0000000000886000-memory.dmp

          Filesize

          4.5MB

        • memory/1244-143-0x0000000000400000-0x0000000000886000-memory.dmp

          Filesize

          4.5MB

        • memory/1244-144-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/1244-152-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4892-149-0x0000000000400000-0x0000000000886000-memory.dmp

          Filesize

          4.5MB

        • memory/4892-150-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4892-151-0x0000000000400000-0x0000000000886000-memory.dmp

          Filesize

          4.5MB

        • memory/4892-153-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4972-139-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4972-137-0x0000000000400000-0x0000000000922000-memory.dmp

          Filesize

          5.1MB

        • memory/4972-146-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4972-136-0x0000000077550000-0x00000000776F3000-memory.dmp

          Filesize

          1.6MB

        • memory/4972-135-0x0000000000400000-0x0000000000922000-memory.dmp

          Filesize

          5.1MB