Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 14:11

General

  • Target

    b9d72d1c9c8b68ab90f20104510f7788.exe

  • Size

    821KB

  • MD5

    b9d72d1c9c8b68ab90f20104510f7788

  • SHA1

    93c9138ef2fa00636701c26abd5b97c43f854f9f

  • SHA256

    fe483a42cd66f760774449e8fcdabd303640476b119c8a2d1d053dce41e5f19e

  • SHA512

    689216add468e91ecf6d8121edc5b5ca61e77e6e1a1230bde2491c8aea86909d46ad2ece6bd818e5f200a3194975f704d2f8b0c6029c010f42730693b8a79080

  • SSDEEP

    12288:tiRbwtuIZcR7yb4QpfMjQbpgE4PhR7sla0cTREgCflO9dJ5IECpxOokLZsCtQw1l:UsusL0jNPvAPsLCcjukL2CDYO

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
  • Program crash 4 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\b9d72d1c9c8b68ab90f20104510f7788.exe
    "C:\Users\Admin\AppData\Local\Temp\b9d72d1c9c8b68ab90f20104510f7788.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\b9d72d1c9c8b68ab90f20104510f7788.exe
      C:\Users\Admin\AppData\Local\Temp\b9d72d1c9c8b68ab90f20104510f7788.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4824
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 664
        3⤵
        • Program crash
        PID:3708
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\b9d72d1c9c8b68ab90f20104510f7788.exe" /TN qPTTkyZ9c33c /F
    1⤵
    • Creates scheduled task(s)
    PID:2392
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN qPTTkyZ9c33c
    1⤵
      PID:4420
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4824 -ip 4824
      1⤵
        PID:1040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 604
        1⤵
        • Program crash
        PID:4588
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN qPTTkyZ9c33c > C:\Users\Admin\AppData\Local\Temp\smc1TC9.xml
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:396
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 4824 -ip 4824
        1⤵
          PID:3764
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 632
          1⤵
          • Program crash
          PID:1088
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4824 -ip 4824
          1⤵
            PID:2064
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 640
            1⤵
            • Program crash
            PID:1500
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4824 -ip 4824
            1⤵
              PID:2308

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\b9d72d1c9c8b68ab90f20104510f7788.exe

              Filesize

              412KB

              MD5

              101db84698743d7ee1e0b8bb13bee96b

              SHA1

              c29fcd340250d16828ad93c2360edd40fa1ad17c

              SHA256

              a251adaf738cf0acd647c98454477c3597a8fbd3a55d9bb06947ad9fdcf1511c

              SHA512

              c2c4b2a881b76769be55e1144a9345ff8569792cd7508b35e796b721607baef36858cae2a37c59e1ea8b7c478985310c0d1a4d42f2e962e77c2c500304b25231

            • C:\Users\Admin\AppData\Local\Temp\smc1TC9.xml

              Filesize

              1KB

              MD5

              a7cd03e2c25024cb0d5e55ba5e09f9b7

              SHA1

              ef479acd0e2cff5371b9b9b67c3e814cca987e9b

              SHA256

              1e02de65857472c149cb971ca3f373d447d2dec5cfa0891b91c2c5ed48a4c7b0

              SHA512

              4739106c21f68c26603873baa5d7276b084d8d738f05c4ed985a4a9fe2b7f0fd01b19f7fcada8e3471b9151d10205cf95882149aecea222d3fc2d04264e96d20

            • memory/4824-16-0x0000000001730000-0x00000000017AE000-memory.dmp

              Filesize

              504KB

            • memory/4824-23-0x0000000000400000-0x000000000045B000-memory.dmp

              Filesize

              364KB

            • memory/4824-22-0x0000000000470000-0x00000000004DB000-memory.dmp

              Filesize

              428KB

            • memory/4824-14-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB

            • memory/4824-40-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB

            • memory/4956-0-0x0000000000400000-0x000000000065C000-memory.dmp

              Filesize

              2.4MB

            • memory/4956-6-0x0000000024FE0000-0x000000002505E000-memory.dmp

              Filesize

              504KB

            • memory/4956-13-0x0000000000400000-0x000000000046B000-memory.dmp

              Filesize

              428KB

            • memory/4956-1-0x0000000000400000-0x000000000046B000-memory.dmp

              Filesize

              428KB