Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/03/2024, 17:25

General

  • Target
    cbfdae7fe306137ec5b180a3f1cfbd40.exe
  • Size 120KB
  • Sample240315-vzf5caeb2x
  • SHA256 1d8086cbd134f292febdf6bfa05b5de9ee836e9b806e088ff4f164d580d0c5b8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 48 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbfdae7fe306137ec5b180a3f1cfbd40.exe
    "C:\Users\Admin\AppData\Local\Temp\cbfdae7fe306137ec5b180a3f1cfbd40.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4484
    • C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe
        3⤵
          PID:1184
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1184 -s 204
            4⤵
            • Program crash
            PID:4792
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1416
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1416 CREDAT:17410 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4456
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3084
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3084 CREDAT:17410 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4612
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1184 -ip 1184
      1⤵
        PID:960

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            WaterMark.exe

            • Path C:\Program Files (x86)\Microsoft\WaterMark.exe
            • Size 120KB
            • SHA256 1d8086cbd134f292febdf6bfa05b5de9ee836e9b806e088ff4f164d580d0c5b8
            • MD5 SHA1 SHA512 SSDEEP

            RecoveryStore.{17D15153-E2F1-11EE-BC63-F2C20ACFDC46}.dat

            • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{17D15153-E2F1-11EE-BC63-F2C20ACFDC46}.dat
            • Size 3KB
            • SHA256 db5ef1e587be69d6cdb714d480ba7296ccfe8d5fb1ccd9c6da1148147cb708c8
            • MD5 SHA1 SHA512

            RecoveryStore.{17E20208-E2F1-11EE-BC63-F2C20ACFDC46}.dat

            • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{17E20208-E2F1-11EE-BC63-F2C20ACFDC46}.dat
            • Size 5KB
            • SHA256 eb4663580f3a786be46772306037a79aa83742d49c61e21c2d5d891538960bce
            • MD5 SHA1 SHA512 SSDEEP

            ver88D2.tmp

            • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver88D2.tmp
            • Size 15KB
            • SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
            • MD5 SHA1 SHA512 SSDEEP

            suggestions[1].en-US

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G7TWCMRP\suggestions[1].en-US
            • Size 17KB
            • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
            • MD5 SHA1 SHA512 SSDEEP

            memory/1184-14-0x0000000000EA0000-0x0000000000EA1000-memory.dmp

            memory/1184-15-0x0000000000E80000-0x0000000000E81000-memory.dmp

            memory/2176-16-0x0000000077982000-0x0000000077983000-memory.dmp

            memory/2176-13-0x0000000077982000-0x0000000077983000-memory.dmp

            memory/2176-11-0x0000000000560000-0x0000000000561000-memory.dmp

            memory/2176-10-0x0000000001F10000-0x0000000001F36000-memory.dmp

            memory/2176-17-0x0000000002080000-0x0000000002081000-memory.dmp

            memory/2176-7-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/2176-20-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/2176-21-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/4484-9-0x00000000005B0000-0x00000000005D6000-memory.dmp

            memory/4484-0-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/4484-8-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/4484-2-0x00000000005B0000-0x00000000005D6000-memory.dmp

            memory/4484-1-0x0000000000400000-0x0000000000426000-memory.dmp