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Analysis

  • max time kernel
    160s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2023, 13:14

General

  • Target

    cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe

  • Size

    660KB

  • MD5

    3b66a4c59d3eadfbb396721c70834ddd

  • SHA1

    cfc1c4a014b005431cf842a9a887b9fd84b1f575

  • SHA256

    fde6f4b70768e329b0d725843094cad8ee50638b32956c0edeefed2d551508d1

  • SHA512

    3302d2043cf5b15f26748b1be8475021d96446456b53c634b940d2339d6f0f24e5d4ca8cac1009c0af942997f0a49c5558f2e8cfc8ad391df81c576044697eb4

  • SSDEEP

    12288:J4reswkUI5NB9y+EdYHsGC29KWeh3ih9HfA:JBkUI54GCFBYT4

Malware Config

Signatures

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe
    "C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe
      "C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe"
      2⤵
        PID:5004
      • C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe
        "C:\Users\Admin\AppData\Local\Temp\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:3996

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\cfc1c4a014b005431cf842a9a887b9fd84b1f575.exe.log

      Filesize

      1KB

      MD5

      e50d61d6d5cec0d2c6b3fbf02b17af2d

      SHA1

      fcf43f96e7389c27ee201fb00b65db01ca2cee40

      SHA256

      a87cf2dbf70a59d3d347f9ca743b6ceb3c805b4714cf4fb963c18b9ca8ffd0a9

      SHA512

      0348b60095cd48d275a5234fe34c1fd7a7c9921e1d92dafea0379d607f898eb1c2e089dafa1db608fad65497fc8f90fa699109b06a5f2c12c0bc8c9192ff9924

    • memory/1620-132-0x0000000000940000-0x00000000009EC000-memory.dmp

      Filesize

      688KB

    • memory/1620-133-0x0000000005570000-0x0000000005602000-memory.dmp

      Filesize

      584KB

    • memory/1620-134-0x00000000058B0000-0x000000000594C000-memory.dmp

      Filesize

      624KB

    • memory/3996-137-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/3996-139-0x0000000005E30000-0x00000000063D4000-memory.dmp

      Filesize

      5.6MB

    • memory/3996-140-0x00000000058F0000-0x0000000005956000-memory.dmp

      Filesize

      408KB

    • memory/3996-141-0x0000000007210000-0x000000000721A000-memory.dmp

      Filesize

      40KB

    • memory/3996-142-0x00000000072E0000-0x0000000007330000-memory.dmp

      Filesize

      320KB

    • memory/3996-143-0x00000000076C0000-0x0000000007882000-memory.dmp

      Filesize

      1.8MB