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Analysis

  • max time kernel
    37s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    03/12/2022, 22:22

General

  • Target

    85e1ecc1992015d6f946a183ceaaf9e022fbcc36bdb2a7fa13bf2337f9c60c38.dll

  • Size

    998KB

  • MD5

    fd4fa44ae6b548123f7b136fb1811be9

  • SHA1

    426fe9207035c449b6fbd9e25bfeed5550e2bf94

  • SHA256

    85e1ecc1992015d6f946a183ceaaf9e022fbcc36bdb2a7fa13bf2337f9c60c38

  • SHA512

    457ba7a8acb1c0fd28bf143aa548dc8fb918d7edcf44ef83946e63a7ef95d3ba6a85caa49f80028e9f43522b8f62699c2af9794909e63f4391d95607cc70208f

  • SSDEEP

    24576:UeVlmJUzOLgGGDu/DtJvTyHOeF/l43kdz5oy1p:UriSLgPDQDtJvaOeY3kdz5

Malware Config

Signatures

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\85e1ecc1992015d6f946a183ceaaf9e022fbcc36bdb2a7fa13bf2337f9c60c38.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\85e1ecc1992015d6f946a183ceaaf9e022fbcc36bdb2a7fa13bf2337f9c60c38.dll,#1
      2⤵
      • Identifies Wine through registry keys
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      PID:1892

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1892-55-0x00000000760B1000-0x00000000760B3000-memory.dmp

    Filesize

    8KB

  • memory/1892-56-0x00000000750B0000-0x00000000752E1000-memory.dmp

    Filesize

    2.2MB

  • memory/1892-57-0x0000000074DF0000-0x0000000075021000-memory.dmp

    Filesize

    2.2MB

  • memory/1892-58-0x0000000074DF0000-0x0000000075021000-memory.dmp

    Filesize

    2.2MB