Analysis

  • max time kernel
    146s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 05:56

General

  • Target

    REVISED INVOICE.exe

  • Size

    607KB

  • MD5

    6b5c6aefc470e66a1d12bc56437f48a0

  • SHA1

    e5c903c9a731c3abfbdb5141d926616bf7b54beb

  • SHA256

    35a2017af959b6e43cb129fc6c18c7e21bc0a1d850b1e74101bbb95d8c5bd3c0

  • SHA512

    704503ceaef70125d52e42cc75cf5dad0c05e27564ed67aef5605ade8cce461100c37598c1c798ea7d39e2f6635ca7c1cd9d7f76725d749769b2c5d414c7c34b

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.fabricwarehousebrla.com/mjf5/

Decoy

scxmarine.com

4week-keto-results.com

alllivesmattertojesus.info

stoxets.com

psm-gen.com

u2collect.com

steveandgail.com

dgemediagroup.com

ragsxghi.com

hirobasushinv.com

fcvlamingo.com

thebrownseaproject.com

achalaproductions.com

unstoppableinvesting.com

epay12303.com

polenmoda.com

pgpitagi.com

picksfacts.com

allhubph.com

negociandocomvocebr.com

Signatures

  • Formbook

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

  • suricata: ET MALWARE FormBook CnC Checkin (GET)
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Formbook Payload 3 IoCs
  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\REVISED INVOICE.exe
      "C:\Users\Admin\AppData\Local\Temp\REVISED INVOICE.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Users\Admin\AppData\Local\Temp\REVISED INVOICE.exe
        "C:\Users\Admin\AppData\Local\Temp\REVISED INVOICE.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:748
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\SysWOW64\wscript.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:420
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\REVISED INVOICE.exe"
        3⤵
        • Deletes itself
        PID:872

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/420-71-0x0000000000000000-mapping.dmp
  • memory/420-76-0x0000000001DE0000-0x0000000001E73000-memory.dmp
    Filesize

    588KB

  • memory/420-75-0x0000000002010000-0x0000000002313000-memory.dmp
    Filesize

    3.0MB

  • memory/420-74-0x0000000000190000-0x00000000001BE000-memory.dmp
    Filesize

    184KB

  • memory/420-73-0x00000000005B0000-0x00000000005D6000-memory.dmp
    Filesize

    152KB

  • memory/748-69-0x00000000001B0000-0x00000000001C4000-memory.dmp
    Filesize

    80KB

  • memory/748-67-0x000000000041EDB0-mapping.dmp
  • memory/748-68-0x0000000000770000-0x0000000000A73000-memory.dmp
    Filesize

    3.0MB

  • memory/748-66-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/872-72-0x0000000000000000-mapping.dmp
  • memory/1100-60-0x0000000000FA0000-0x0000000000FA1000-memory.dmp
    Filesize

    4KB

  • memory/1100-65-0x0000000000580000-0x00000000005B5000-memory.dmp
    Filesize

    212KB

  • memory/1100-64-0x0000000004800000-0x000000000487A000-memory.dmp
    Filesize

    488KB

  • memory/1100-63-0x0000000000250000-0x000000000025B000-memory.dmp
    Filesize

    44KB

  • memory/1100-62-0x0000000004E90000-0x0000000004E91000-memory.dmp
    Filesize

    4KB

  • memory/1380-70-0x0000000004DC0000-0x0000000004EF8000-memory.dmp
    Filesize

    1.2MB

  • memory/1380-77-0x0000000006B20000-0x0000000006C80000-memory.dmp
    Filesize

    1.4MB