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Analysis

  • max time kernel
    142s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 15:06

General

  • Target

    7d49f73681f8f0fbba9315f4ae02916b.exe

  • Size

    821KB

  • MD5

    7d49f73681f8f0fbba9315f4ae02916b

  • SHA1

    d60460389295773336eff8d60213f35a48f06c17

  • SHA256

    e08e88635a129122287e9c873c386b72d706d6639ad68e5de509bd842af46c8d

  • SHA512

    5ed69b9d45eec8d0d8c3712e87b2e8d71d7fc48d93e76f738a3370d5a7fb32b85ba606e1c5b7e3aa4054fbe358c2a18905c1509e71f481cb1d7f492aa6f9dbd0

  • SSDEEP

    12288:LsMYxhA9bm1D0WjZfYh/Qb/LUnKaR26mLQ16BpOWuoflO9dJ5IECpxOokLZsCtQ2:LADjsXKybqQ4OWuocjukL2CDYO

Score
7/10
upx

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 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe
    "C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe
      C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe" /TN BLiB1zkTf55f /F
        3⤵
        • Creates scheduled task(s)
        PID:2920
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN BLiB1zkTf55f > C:\Users\Admin\AppData\Local\Temp\He0LYWP.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:556
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN BLiB1zkTf55f
          4⤵
            PID:3096
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 616
          3⤵
          • Program crash
          PID:3076
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 644
          3⤵
          • Program crash
          PID:4588
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 1856 -ip 1856
      1⤵
        PID:3228
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1856 -ip 1856
        1⤵
          PID:2316

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\7d49f73681f8f0fbba9315f4ae02916b.exe

          Filesize

          821KB

          MD5

          840694ce61a531477425f6ad264a62b7

          SHA1

          8034decb317360e5f62d59a33afaa4ca7c52bfd4

          SHA256

          9f9f52934648c1c630a986cb17f55741844977ba5073c0aae962f292e79c7ca3

          SHA512

          f71cf06f69567ab6bef416d4246ea0ce1ce0a8ef3704626e15ac7566485334ec7f0ad314bbdda0b85797aa8a29f690ef873a972697a3836848f703cfed523e14

        • C:\Users\Admin\AppData\Local\Temp\He0LYWP.xml

          Filesize

          1KB

          MD5

          35d34dc4d757134af5bfd9e49173d76a

          SHA1

          3b0d1402aad10280dc118778be3ce37141e6f149

          SHA256

          d22e456d1cf279edcfa954f0c42694591b6c23dfacad23551d64ee332d27232d

          SHA512

          fbd6ff3f3d5908bbc38d2ba7583bb9df9824abbf21bed08235146a85f09eef71ee484857a69cb7b6c078a1e85024ad249f40b89ce8726580d891cc7f55dbdf88

        • memory/456-0-0x0000000000400000-0x000000000065C000-memory.dmp

          Filesize

          2.4MB

        • memory/456-1-0x0000000000400000-0x000000000046B000-memory.dmp

          Filesize

          428KB

        • memory/456-4-0x0000000001720000-0x000000000179E000-memory.dmp

          Filesize

          504KB

        • memory/456-13-0x0000000000400000-0x000000000046B000-memory.dmp

          Filesize

          428KB

        • memory/1856-14-0x0000000000400000-0x000000000065C000-memory.dmp

          Filesize

          2.4MB

        • memory/1856-16-0x00000000016F0000-0x000000000176E000-memory.dmp

          Filesize

          504KB

        • memory/1856-22-0x00000000004B0000-0x000000000051B000-memory.dmp

          Filesize

          428KB

        • memory/1856-23-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/1856-40-0x0000000000400000-0x000000000065C000-memory.dmp

          Filesize

          2.4MB