Resubmissions

18-01-2023 14:08

230118-rfz7bsae22 10

16-12-2022 12:38

221216-pvfecsef97 7

Analysis

  • max time kernel
    254s
  • max time network
    257s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2022 12:38

General

  • Target

    BraveBrowserSetup.exe

  • Size

    309.1MB

  • MD5

    931195d97525e56b81273de435a1b23a

  • SHA1

    a7b1888845db32aceb0c0d8a98a448e94ac95d0a

  • SHA256

    bd06228669802c5ee2f00c900dd17efd1763780b17f05346d5ddcf6ead24297b

  • SHA512

    c53b492d548f9cbd1f35aff646fe5344b141bf226aa78eb39c05914ff2704fd4cd9c5ed336967354b3311db487f60271374783ef6d485187ea714cd506912792

  • SSDEEP

    24576:jgo+DDRIgvlC+pKc8zDkfxUXtWjPMBzuxK2:M5DDRISrxUcjPMBzuxv

Score
5/10

Malware Config

Signatures

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

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1216
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:560
    • C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
      C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
      2⤵
        PID:268

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/268-70-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-68-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-63-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-76-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-64-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-75-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-73-0x000000000042DB8C-mapping.dmp
    • memory/268-66-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/268-72-0x0000000000400000-0x000000000046B000-memory.dmp
      Filesize

      428KB

    • memory/560-60-0x000000006F200000-0x000000006F7AB000-memory.dmp
      Filesize

      5.7MB

    • memory/560-62-0x000000006F200000-0x000000006F7AB000-memory.dmp
      Filesize

      5.7MB

    • memory/560-58-0x0000000000000000-mapping.dmp
    • memory/560-61-0x000000006F200000-0x000000006F7AB000-memory.dmp
      Filesize

      5.7MB

    • memory/1216-54-0x0000000000810000-0x00000000008D6000-memory.dmp
      Filesize

      792KB

    • memory/1216-56-0x0000000000780000-0x0000000000812000-memory.dmp
      Filesize

      584KB

    • memory/1216-55-0x0000000004890000-0x0000000004950000-memory.dmp
      Filesize

      768KB

    • memory/1216-57-0x0000000075D01000-0x0000000075D03000-memory.dmp
      Filesize

      8KB