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Analysis

  • max time kernel
    169s
  • max time network
    200s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/12/2022, 18:36

General

  • Target

    b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183.exe

  • Size

    1.2MB

  • MD5

    03bb57c0b709f25040a1b9251aadb7eb

  • SHA1

    3927c036a94e084eb629c196492565cd4db53eba

  • SHA256

    b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

  • SHA512

    6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

  • SSDEEP

    3072:qXJCFRSt63wPwWYhVTjJ5cHymR7w0YmS8O:LdnWYD95z4w0Dt

Score
8/10
upx

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • UPX packed file 8 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183.exe
    "C:\Users\Admin\AppData\Local\Temp\b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1148
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\\svchost.exe
      2⤵
        PID:428
      • C:\Users\Admin\AppData\Local\Temp\b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183.exe
        2⤵
        • Checks computer location settings
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4668
        • C:\Users\Admin\E696D64614\winlogon.exe
          "C:\Users\Admin\E696D64614\winlogon.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2408
          • C:\Users\Admin\E696D64614\winlogon.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1696
            • C:\Users\Admin\E696D64614\winlogon.exe
              "C:\Users\Admin\E696D64614\winlogon.exe"
              5⤵
              • Executes dropped EXE
              PID:1716
            • C:\Users\Admin\E696D64614\winlogon.exe
              "C:\Users\Admin\E696D64614\winlogon.exe"
              5⤵
              • Executes dropped EXE
              PID:4508
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4508 -s 12
                6⤵
                • Program crash
                PID:1752
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\\svchost.exe
            4⤵
              PID:2416
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1716 -ip 1716
        1⤵
          PID:2104
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4508 -ip 4508
          1⤵
            PID:868

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\E696D64614\winlogon.exe

            Filesize

            1.2MB

            MD5

            03bb57c0b709f25040a1b9251aadb7eb

            SHA1

            3927c036a94e084eb629c196492565cd4db53eba

            SHA256

            b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

            SHA512

            6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

          • C:\Users\Admin\E696D64614\winlogon.exe

            Filesize

            1.2MB

            MD5

            03bb57c0b709f25040a1b9251aadb7eb

            SHA1

            3927c036a94e084eb629c196492565cd4db53eba

            SHA256

            b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

            SHA512

            6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

          • C:\Users\Admin\E696D64614\winlogon.exe

            Filesize

            1.2MB

            MD5

            03bb57c0b709f25040a1b9251aadb7eb

            SHA1

            3927c036a94e084eb629c196492565cd4db53eba

            SHA256

            b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

            SHA512

            6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

          • C:\Users\Admin\E696D64614\winlogon.exe

            Filesize

            1.2MB

            MD5

            03bb57c0b709f25040a1b9251aadb7eb

            SHA1

            3927c036a94e084eb629c196492565cd4db53eba

            SHA256

            b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

            SHA512

            6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

          • C:\Users\Admin\E696D64614\winlogon.exe

            Filesize

            1.2MB

            MD5

            03bb57c0b709f25040a1b9251aadb7eb

            SHA1

            3927c036a94e084eb629c196492565cd4db53eba

            SHA256

            b218041ae37bb4f37715722d97a5d7b7b6fa7de3bcffb0b2ccbdeb5b93bbf183

            SHA512

            6b7b3d3c41825a46e931f209afe126b35c982ddc840caeca7597c32736bf4fc4dacbe447f6982654b0e922ce3db63422d0d44d0eee728cdf92a17ec737d5c170

          • memory/1696-150-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/1696-154-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/1696-151-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/4668-145-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/4668-140-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/4668-137-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/4668-136-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB

          • memory/4668-134-0x0000000000400000-0x000000000041C000-memory.dmp

            Filesize

            112KB