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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    15/03/2024, 14:06

General

  • Target

    cb99b97464bc521a09aaf995875e6d6b.exe

  • Size

    24KB

  • MD5

    cb99b97464bc521a09aaf995875e6d6b

  • SHA1

    e2ebbc32a8a257cddfe92054132becb6d40815bb

  • SHA256

    3e84365f940e104ccd43d1ad7f5955c7f0b7a73e9e52c86ed91ef7666034db04

  • SHA512

    86aa385da1b5234071d0119b1d34f4aa3686d75f76bad312f9c6e573a3e5cf784210d77062fc485c8215ff06458a3399e861d17bcfb7072f77c5a95ffc9ccda1

  • SSDEEP

    384:E3eVES+/xwGkRKJ/olM61qmTTMVF9/q5qDG0:bGS+ZfbJ/oO8qYoAGv

Score
6/10

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb99b97464bc521a09aaf995875e6d6b.exe
    "C:\Users\Admin\AppData\Local\Temp\cb99b97464bc521a09aaf995875e6d6b.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c set
        3⤵
          PID:2564
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          3⤵
          • Gathers network information
          PID:2872
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:2252
        • C:\Windows\SysWOW64\net.exe
          net start
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2648
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start
            4⤵
              PID:2632
          • C:\Windows\SysWOW64\NETSTAT.EXE
            netstat -an
            3⤵
            • Gathers network information
            • Suspicious use of AdjustPrivilegeToken
            PID:2392

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • \??\c:\windows\temp\flash.log

        Filesize

        8KB

        MD5

        68a30a6a17bbc4bdd75379b8925775ad

        SHA1

        799995acb5ddcecf84f1c78aebfbe0921e3ab867

        SHA256

        577551ca7a1971d733cc3f8c7500e41f5b9f49d2293ea83da2b37c99ae93bda9

        SHA512

        2307095973745f6b05860295f32bfd96a0692b2c2702d50ed9a8f0c0c963f9e1c871dac39a8086bcbafa14085b757a600f56e634ebaad2a6620f43b16fa31d3e