Resubmissions

31-10-2021 06:34

211031-hbtpbaffb7 10

29-10-2021 13:36

211029-qwckjaabcq 10

Analysis

  • max time kernel
    697s
  • max time network
    717s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    31-10-2021 06:34

General

  • Target

    main.php.dll

  • Size

    329KB

  • MD5

    9c9b58c38841af6f89ff90a746d63cec

  • SHA1

    95481d6dfa4660bd24ac519561269b6fbd4571c1

  • SHA256

    11f3d84aad7131fe124155c9edfceb594649e87de1ee03383f470442d6ed69a1

  • SHA512

    7b32798e4652f05861cdb5e03abb1eeebe4183c4f5411cc73166fc1e31dab37c00104e3cc035b2fc9c8c3300b561c17b9cffccc8af79fbc78ea2b1b1e721b518

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Bazar/Team9 Loader payload 2 IoCs
  • Tries to connect to .bazar domain 64 IoCs

    Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1204
      • C:\Windows\system32\regsvr32.exe
        regsvr32 /s C:\Users\Admin\AppData\Local\Temp\main.php.dll
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:952
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe"
        2⤵
          PID:1400
      • C:\Windows\system32\regsvr32.exe
        regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\main.php.dll"
        1⤵
          PID:1760

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

          MD5

          ab5c36d10261c173c5896f3478cdc6b7

          SHA1

          87ac53810ad125663519e944bc87ded3979cbee4

          SHA256

          f8e90fb0557fe49d7702cfb506312ac0b24c97802f9c782696db6d47f434e8e9

          SHA512

          e83e4eae44e7a9cbcd267dbfc25a7f4f68b50591e3bbe267324b1f813c9220d565b284994ded5f7d2d371d50e1ebfa647176ec8de9716f754c6b5785c6e897fa

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

          MD5

          7b4e235ff1f4d32fa56900fe369fdee0

          SHA1

          466a0a322c93f5fe5733193b64355bfdc0885bb3

          SHA256

          245832e350896e71dfb6658a45d957c078f0bf8e9258aff38e2e6cd7074c6c21

          SHA512

          5e394b38d940c1b6deaadc9aed5cdca7186b05467f88183ad23aabf87a16f86f7db54d15d46f6f22527ad8ae7b1474fd3b49998d14b60d9ad40fe38493f70e44

        • memory/952-54-0x000007FEFC271000-0x000007FEFC273000-memory.dmp

          Filesize

          8KB

        • memory/952-55-0x0000000001F20000-0x0000000002130000-memory.dmp

          Filesize

          2.1MB

        • memory/1760-57-0x0000000001F50000-0x0000000002160000-memory.dmp

          Filesize

          2.1MB