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Analysis

  • max time kernel
    105s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/08/2024, 15:12

General

  • Target

    a41ffdb8ddb5e27c1ad6478d7559f240N.exe

  • Size

    1.0MB

  • MD5

    a41ffdb8ddb5e27c1ad6478d7559f240

  • SHA1

    f83e04929f3988a3aefc8ac40a8a6a72f83ade97

  • SHA256

    eedc4ce191851f845f671e469ad056868d7fd07f7fe853697bff1d1f62b95056

  • SHA512

    9a07541981ed54376f202ad1ec0f82d0da4717b01e8cb678165d98b51d73a5731b84bca457458f32c6a52ab1c0688b99050e39da3f3f2d6b69427b808029842b

  • SSDEEP

    24576:+A/uXLA5A3c1KdYS+f7vlK13BHUZ50zqLQyow3CqCzt:J/u7A5A3c1KSf7dK11Ur0wQyow3Cpzt

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Program crash 5 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe
    "C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe
      C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2852
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe" /TN n3TzfEYb35ee /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2044
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN n3TzfEYb35ee > C:\Users\Admin\AppData\Local\Temp\f77ukS.xml
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2224
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN n3TzfEYb35ee
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3492
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 616
        3⤵
        • Program crash
        PID:2076
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 636
        3⤵
        • Program crash
        PID:3960
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 644
        3⤵
        • Program crash
        PID:4936
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 724
        3⤵
        • Program crash
        PID:704
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 744
        3⤵
        • Program crash
        PID:3796
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2852 -ip 2852
    1⤵
      PID:1536
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2852 -ip 2852
      1⤵
        PID:2024
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2852 -ip 2852
        1⤵
          PID:2556
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2852 -ip 2852
          1⤵
            PID:4440
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2852 -ip 2852
            1⤵
              PID:892

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\a41ffdb8ddb5e27c1ad6478d7559f240N.exe

              Filesize

              1.0MB

              MD5

              d67004e4589c6f078036cdee5c9a3708

              SHA1

              fe8927c1da2951b87ccc5edf08992a520f961fe7

              SHA256

              058f586030b3ec1243cd4462108815db18e9adf72a98bd8fec7a06d1b72231a0

              SHA512

              f60345adc99c182bd6bc289f1001a68f05263673aa751f4962d240bbcfbb1788d4188c63e6422d95173d9622b2c6c35c4de19184ead23b9fe920683a3741c8c3

            • C:\Users\Admin\AppData\Local\Temp\f77ukS.xml

              Filesize

              1KB

              MD5

              7ce109082006bfddd9af80ef15344fb1

              SHA1

              5388351cbef591dc245fd93cf70296bc4cc916b7

              SHA256

              66048860ad0e58984b59be776c6050951e53c40f93a272ed2067197b77fc6dd1

              SHA512

              420a3acf1c940d44ee7e352b471ba8d620074c063a26d35489ceabbdaddb33f47d9cc6d6892f2425764cc9573bea92d42b876898d0b50da92ee76e598955742f

            • memory/1740-0-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB

            • memory/1740-1-0x0000000000400000-0x000000000046B000-memory.dmp

              Filesize

              428KB

            • memory/1740-7-0x0000000025040000-0x00000000250BE000-memory.dmp

              Filesize

              504KB

            • memory/1740-13-0x0000000000400000-0x000000000046B000-memory.dmp

              Filesize

              428KB

            • memory/2852-14-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB

            • memory/2852-21-0x0000000025050000-0x00000000250CE000-memory.dmp

              Filesize

              504KB

            • memory/2852-22-0x0000000000400000-0x000000000045B000-memory.dmp

              Filesize

              364KB

            • memory/2852-27-0x0000000000470000-0x00000000004DB000-memory.dmp

              Filesize

              428KB

            • memory/2852-44-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB