Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    30-07-2021 15:25

General

  • Target

    ????? ?????? ????#454326_PDF.exe

  • Size

    899KB

  • MD5

    8ffb5b1aba6759d623f20a9744de4dd0

  • SHA1

    969a580a9e874f8e5a38d7fb4db664be1aa35ce5

  • SHA256

    8674688f673421c41dd39734f690c3b1b0aa8aceb5adeb057cf8b21d8f2e41a6

  • SHA512

    3713871db07036eca5846ca681432e63dbf1951a47186c1f8458a3395da57b53ab796f5b44025bb277cb6f281fecf401d090bc8618fa72b9ea20fce8991a538c

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.constructioncleanup.pro/vd9n/

Decoy

theunwrappedcollective.com

seckj-ic.com

tyresandover.com

thetrophyworld.com

fonggrconstruction.com

hopiproject.com

sktitle.com

charlotteobscurer.com

qjuhe.com

girlzglitter.com

createmylawn.com

hempcbgpill.com

zzdfdzkj.com

shreehariessential.com

226sm.com

getcupscall.com

neuralviolin.com

sanskaar.life

xn--fhqrm54yyukopc.com

togetherx4fantasy5star.today

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)
  • Formbook Payload 3 IoCs
  • Suspicious use of SetThreadContext 3 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.

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1212
    • C:\Users\Admin\AppData\Local\Temp\_____ ______ ____#454326_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\_____ ______ ____#454326_PDF.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1608
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tUlSEv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDD73.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1628
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
          PID:1700
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:364
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Windows\SysWOW64\svchost.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1652
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          3⤵
            PID:2016

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpDD73.tmp

        MD5

        43cb1c32af4e2e2dde7dc771ec2b0c44

        SHA1

        c975a4c28be5eb7864f6dfef58638b0707e7791b

        SHA256

        0ea611bb91ed3a9aac67da012266a0cca65754ede293b165ff0426d7e362aaf0

        SHA512

        1a3e99dbd3da60a31058711da3b4cad3be7cbf4a67de9977c28565a68afd9f3d0eb18c8cc00d73a496c058549942956510f969fdd502e95dfeeacc67436cdb5f

      • memory/364-68-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/364-71-0x0000000000290000-0x00000000002A4000-memory.dmp

        Filesize

        80KB

      • memory/364-70-0x00000000008C0000-0x0000000000BC3000-memory.dmp

        Filesize

        3.0MB

      • memory/364-69-0x000000000041EBD0-mapping.dmp

      • memory/1212-79-0x0000000004450000-0x0000000004527000-memory.dmp

        Filesize

        860KB

      • memory/1212-72-0x0000000004310000-0x00000000043EB000-memory.dmp

        Filesize

        876KB

      • memory/1608-65-0x0000000000E20000-0x0000000000E53000-memory.dmp

        Filesize

        204KB

      • memory/1608-60-0x0000000001030000-0x0000000001031000-memory.dmp

        Filesize

        4KB

      • memory/1608-64-0x0000000005F90000-0x0000000006008000-memory.dmp

        Filesize

        480KB

      • memory/1608-63-0x0000000000960000-0x000000000097B000-memory.dmp

        Filesize

        108KB

      • memory/1608-62-0x0000000004D90000-0x0000000004D91000-memory.dmp

        Filesize

        4KB

      • memory/1628-66-0x0000000000000000-mapping.dmp

      • memory/1652-73-0x0000000000000000-mapping.dmp

      • memory/1652-75-0x0000000000070000-0x0000000000078000-memory.dmp

        Filesize

        32KB

      • memory/1652-76-0x00000000000E0000-0x000000000010E000-memory.dmp

        Filesize

        184KB

      • memory/1652-77-0x0000000000A10000-0x0000000000D13000-memory.dmp

        Filesize

        3.0MB

      • memory/1652-78-0x00000000004B0000-0x0000000000543000-memory.dmp

        Filesize

        588KB

      • memory/2016-74-0x0000000000000000-mapping.dmp