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Analysis

  • max time kernel
    109s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/03/2024, 22:13

General

  • Target

    c1bc798ea23f3724ec785dcb80ef5157.dll

  • Size

    49KB

  • MD5

    c1bc798ea23f3724ec785dcb80ef5157

  • SHA1

    39a62d515ef9243ebbe258c6c216117fac708b18

  • SHA256

    7698b685acfb273d1590fabe8f3495f2056691a5871296a50b1c5ed1339aa577

  • SHA512

    a87ba8d95525e813b0170cd00687cf617fca23d46aaadc7752556e2501320a8191165fa5dbc77c060264e8606cfccc755a1af93f3772d4835c35ac018c555e42

  • SSDEEP

    768:4vc89QoqCl28iydf60EUsn3Q1lwf2hekL9/w4Xk+lZW+4V:Y/Qpc/Zf6wsEVCX+lQnV

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Program crash 3 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c1bc798ea23f3724ec785dcb80ef5157.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4844
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c1bc798ea23f3724ec785dcb80ef5157.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4256
      • C:\Windows\SysWOW64\PCB~1.exe
        C:\Windows\system32\PCB~1.exe
        3⤵
        • Executes dropped EXE
        PID:2428
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 428
          4⤵
          • Program crash
          PID:3012
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 448
          4⤵
          • Program crash
          PID:3500
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c erase /f /q C:\Windows\system32\PCB~1.exe
        3⤵
          PID:2092
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c taskkill /im cmd.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:768
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im cmd.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:5088
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 616
          3⤵
          • Program crash
          PID:4620
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2428 -ip 2428
      1⤵
        PID:2724
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2428 -ip 2428
        1⤵
          PID:1008
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4256 -ip 4256
          1⤵
            PID:2660

          Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\PCB~1.exe

            Filesize

            29KB

            MD5

            b44e9d14dec09425c1c3b762d21f31a2

            SHA1

            8118759754b0be281ec8bab3734061db3bc1ab44

            SHA256

            a9603e8836952ee6b5e1e1b49812c9e4c5911a2502bfc01d5c5d63d36ee7142f

            SHA512

            e60349a06386f0f7607b39045416efeff8afa078e8cda058b0fb90cc750935c532557a1bb2d4b05b1efec0fe2163f29f6a524f3b0f444b0327d5d1a9b6455e8f

          • memory/2428-3-0x0000000000410000-0x0000000000419000-memory.dmp

            Filesize

            36KB

          • memory/2428-5-0x0000000000590000-0x0000000000596000-memory.dmp

            Filesize

            24KB

          • memory/2428-7-0x0000000000410000-0x0000000000419000-memory.dmp

            Filesize

            36KB

          • memory/4256-6-0x00000000003E0000-0x00000000003F9000-memory.dmp

            Filesize

            100KB

          • memory/4256-9-0x00000000003E0000-0x00000000003F9000-memory.dmp

            Filesize

            100KB