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Analysis

  • max time kernel
    140s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 15:50

General

  • Target

    7a4200f2f3c210f3a24927b5d6fb61e2.exe

  • Size

    87KB

  • MD5

    7a4200f2f3c210f3a24927b5d6fb61e2

  • SHA1

    f731e312af80f0cc6b73ae28b5431c83f52f8a37

  • SHA256

    75feb7e282987ce9f4a072b4c32ad2b3313cc65206fcb1a1e04ef7194709d4e8

  • SHA512

    aa03837c8d8ad68a5af0a5eb41148ffb0134113faf9cc92128f7d14892e5145713c690951920cf8312fdc0ab02f7535234c570b0f34a629d6e88dbdf14959d82

  • SSDEEP

    768:6x39TEu51YZP9euPoUPlLx39TEu51YZP9euPoUPlDOdQC+NaH9K7lgiJ2SR7mcd7:6bsP9evUPBbsP9evUPBOfin

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 5 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a4200f2f3c210f3a24927b5d6fb61e2.exe
    "C:\Users\Admin\AppData\Local\Temp\7a4200f2f3c210f3a24927b5d6fb61e2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Users\Admin\AppData\Local\Temp\7a4200f2f3c210f3a24927b5d6fb61e2.exe
      "C:\Users\Admin\AppData\Local\Temp\7a4200f2f3c210f3a24927b5d6fb61e2.exe"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\SysWOW64\ntldr.exe
        "C:\Windows\system32\ntldr.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Windows\SysWOW64\ntldr.exe
          "C:\Windows\SysWOW64\ntldr.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          PID:4060
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 360
            5⤵
            • Program crash
            PID:3052
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 320
        3⤵
        • Program crash
        PID:2904
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4060 -ip 4060
    1⤵
      PID:1264
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1920 -ip 1920
      1⤵
        PID:2156

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\ntldr.exe

        Filesize

        87KB

        MD5

        7a4200f2f3c210f3a24927b5d6fb61e2

        SHA1

        f731e312af80f0cc6b73ae28b5431c83f52f8a37

        SHA256

        75feb7e282987ce9f4a072b4c32ad2b3313cc65206fcb1a1e04ef7194709d4e8

        SHA512

        aa03837c8d8ad68a5af0a5eb41148ffb0134113faf9cc92128f7d14892e5145713c690951920cf8312fdc0ab02f7535234c570b0f34a629d6e88dbdf14959d82

      • memory/1920-0-0x0000000000400000-0x0000000000409000-memory.dmp

        Filesize

        36KB

      • memory/1920-2-0x0000000000400000-0x0000000000409000-memory.dmp

        Filesize

        36KB

      • memory/1920-5-0x0000000000400000-0x0000000000409000-memory.dmp

        Filesize

        36KB

      • memory/1920-21-0x0000000000400000-0x0000000000409000-memory.dmp

        Filesize

        36KB

      • memory/4060-18-0x0000000000400000-0x0000000000409000-memory.dmp

        Filesize

        36KB