Analysis

  • max time kernel
    180s
  • max time network
    310s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    15/11/2022, 04:17

General

  • Target

    3735585ffb3ec5d0493b3e3e44323ecb9ef11c78f8ccda56e2d86c02a103f736.exe

  • Size

    8.2MB

  • MD5

    8aaa63d32bc201244a89f771d37c5523

  • SHA1

    9f0b6da7824c11e18bfc67fef016dc4c6d034c6e

  • SHA256

    3735585ffb3ec5d0493b3e3e44323ecb9ef11c78f8ccda56e2d86c02a103f736

  • SHA512

    d75ef26bff91d50fe959a86f20db7813bf8fd6e16ac7d9b17b22401eab29841b60f79bbdd472a1fd29aff7b2f8c8a186f6baf5f29225deb7f879cb76208eaf76

  • SSDEEP

    98304:0nf7Zg7kBIjYXCz76QOph+F7ccTDhUCuEw3YtVD8flWyK40uLlcKLh+5D:U0jrf6QOph+LsyTyKruJV0D

Malware Config

Extracted

Family

systembc

C2

89.22.225.242:4193

195.2.93.22:4193

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 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3735585ffb3ec5d0493b3e3e44323ecb9ef11c78f8ccda56e2d86c02a103f736.exe
    "C:\Users\Admin\AppData\Local\Temp\3735585ffb3ec5d0493b3e3e44323ecb9ef11c78f8ccda56e2d86c02a103f736.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\system32\schtasks.exe" /create /tn COMSurrogate /f /sc onlogon /rl highest /tr "C:\Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1408
    • C:\Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe
      "C:\Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        3⤵
          PID:1968
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\3735585ffb3ec5d0493b3e3e44323ecb9ef11c78f8ccda56e2d86c02a103f736.exe"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:852
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          3⤵
            PID:1296
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1
            3⤵
            • Runs ping.exe
            PID:1224

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\mntemp

              Filesize

              16B

              MD5

              74b67ffc2d06bbc77a8ab989ed932c04

              SHA1

              60230f37be50ed8c592aedb0cdd7e344ceca2689

              SHA256

              76e755d18897a0991b938706181ac99cf4e7b16d7364214072de155189a38215

              SHA512

              a66f7ae45c15cc3a54d1212ec331f575d8589895f6e4a8626a8dfeffe8be66d62b3c26ab781bc6d3e61f738b1aa64259d60651456c4d3bf3afeed8bf17fd9e56

            • C:\Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe

              Filesize

              772.2MB

              MD5

              6752f9e74ce8c10ea46352228228d788

              SHA1

              e236cdbf55c547e5df9461f1724d5fa586ae1333

              SHA256

              df8079b096dcc5fda083029446356ca46ee8fd5ccc44e9128bbec26ec417f03e

              SHA512

              222e76486e9ed8f8a616b7511b4a69f6ec9fd38f0056a11a473dec0c0aeb042f416c3c093a97986633dbe15b3d441195e46b90e3b29cbbe68aa92f9c1b9a67f9

            • C:\Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe

              Filesize

              659.7MB

              MD5

              e87eb1d4291c6b6b65298d92a9427cd6

              SHA1

              aa2a61ec619b8f7212324785397d22b9094fcd8b

              SHA256

              b43a9fcd2cfa60b0141837cbe09249050df7c899e76f476beea993ee842abf04

              SHA512

              bd7b0c566cb35472511361dfb48db7bf9e6282e93bfd2f3c5715a844ba2833cdb408b652dde985457020c8a75e915fea0b739bd64ee0930b5c2449a651cd2412

            • \Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe

              Filesize

              772.2MB

              MD5

              6752f9e74ce8c10ea46352228228d788

              SHA1

              e236cdbf55c547e5df9461f1724d5fa586ae1333

              SHA256

              df8079b096dcc5fda083029446356ca46ee8fd5ccc44e9128bbec26ec417f03e

              SHA512

              222e76486e9ed8f8a616b7511b4a69f6ec9fd38f0056a11a473dec0c0aeb042f416c3c093a97986633dbe15b3d441195e46b90e3b29cbbe68aa92f9c1b9a67f9

            • \Users\Admin\hohowoha felite pabor yawexe winebi quejita poveh vakor vavajofe gaso kit\hiwolos febocisi moq kadi.exe

              Filesize

              772.2MB

              MD5

              6752f9e74ce8c10ea46352228228d788

              SHA1

              e236cdbf55c547e5df9461f1724d5fa586ae1333

              SHA256

              df8079b096dcc5fda083029446356ca46ee8fd5ccc44e9128bbec26ec417f03e

              SHA512

              222e76486e9ed8f8a616b7511b4a69f6ec9fd38f0056a11a473dec0c0aeb042f416c3c093a97986633dbe15b3d441195e46b90e3b29cbbe68aa92f9c1b9a67f9

            • memory/268-91-0x0000000000150000-0x0000000000240000-memory.dmp

              Filesize

              960KB

            • memory/268-89-0x0000000000150000-0x0000000000240000-memory.dmp

              Filesize

              960KB

            • memory/268-88-0x0000000000150000-0x0000000000240000-memory.dmp

              Filesize

              960KB

            • memory/268-87-0x0000000002F20000-0x00000000033F0000-memory.dmp

              Filesize

              4.8MB

            • memory/268-86-0x0000000002F20000-0x00000000033F0000-memory.dmp

              Filesize

              4.8MB

            • memory/268-85-0x0000000000AD0000-0x0000000001300000-memory.dmp

              Filesize

              8.2MB

            • memory/268-81-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/268-92-0x0000000000A20000-0x0000000000A82000-memory.dmp

              Filesize

              392KB

            • memory/268-90-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/268-99-0x0000000000AD0000-0x0000000001300000-memory.dmp

              Filesize

              8.2MB

            • memory/268-100-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/268-101-0x0000000000150000-0x0000000000240000-memory.dmp

              Filesize

              960KB

            • memory/268-82-0x0000000000AD0000-0x0000000001300000-memory.dmp

              Filesize

              8.2MB

            • memory/268-73-0x0000000000AD0000-0x0000000001300000-memory.dmp

              Filesize

              8.2MB

            • memory/1968-98-0x0000000000400000-0x0000000000407000-memory.dmp

              Filesize

              28KB

            • memory/1968-95-0x0000000000400000-0x0000000000407000-memory.dmp

              Filesize

              28KB

            • memory/1968-93-0x0000000000400000-0x0000000000407000-memory.dmp

              Filesize

              28KB

            • memory/1972-71-0x00000000100D0000-0x0000000010900000-memory.dmp

              Filesize

              8.2MB

            • memory/1972-59-0x0000000002D90000-0x0000000003260000-memory.dmp

              Filesize

              4.8MB

            • memory/1972-72-0x00000000100D0000-0x0000000010900000-memory.dmp

              Filesize

              8.2MB

            • memory/1972-65-0x0000000000B70000-0x0000000000C60000-memory.dmp

              Filesize

              960KB

            • memory/1972-64-0x0000000002D90000-0x0000000003260000-memory.dmp

              Filesize

              4.8MB

            • memory/1972-63-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/1972-62-0x0000000001160000-0x0000000001990000-memory.dmp

              Filesize

              8.2MB

            • memory/1972-61-0x0000000000B70000-0x0000000000C60000-memory.dmp

              Filesize

              960KB

            • memory/1972-60-0x0000000000B70000-0x0000000000C60000-memory.dmp

              Filesize

              960KB

            • memory/1972-54-0x0000000075981000-0x0000000075983000-memory.dmp

              Filesize

              8KB

            • memory/1972-58-0x0000000002D90000-0x0000000003260000-memory.dmp

              Filesize

              4.8MB

            • memory/1972-76-0x0000000001160000-0x0000000001990000-memory.dmp

              Filesize

              8.2MB

            • memory/1972-80-0x0000000000B70000-0x0000000000C60000-memory.dmp

              Filesize

              960KB

            • memory/1972-79-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/1972-57-0x0000000001160000-0x0000000001990000-memory.dmp

              Filesize

              8.2MB

            • memory/1972-56-0x0000000077170000-0x00000000772F0000-memory.dmp

              Filesize

              1.5MB

            • memory/1972-55-0x0000000001160000-0x0000000001990000-memory.dmp

              Filesize

              8.2MB