Analysis

  • max time kernel
    150s
  • 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
    28/12/2023, 21:42

General

  • Target

    fa2b9e4dcfdc8aa431aa73d3e874076a.exe

  • Size

    501KB

  • MD5

    fa2b9e4dcfdc8aa431aa73d3e874076a

  • SHA1

    36b5d002261d6f3f352f167ab423874b0f4bb2f2

  • SHA256

    e052306365368079ed51f3e9c9cc2526a99df7e54879cbb9957ee6432a63fb07

  • SHA512

    bd416f69dc79e1e158bba7412c4caac4a5cdea725375a26ec9790639031db97224403a41f556d03f5284b7abb43020b46c0590693fbeba9b8028cf18be360af5

  • SSDEEP

    12288:Kn7u7afVXS7lgAdhmDhZytk7/h6AGBKaLcKZBHaIlq:YbVCxohQtviaIKZ

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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\fa2b9e4dcfdc8aa431aa73d3e874076a.exe
    "C:\Users\Admin\AppData\Local\Temp\fa2b9e4dcfdc8aa431aa73d3e874076a.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:4640
    • C:\Users\Admin\AppData\Local\Temp\fa2b9e4dcfdc8aa431aa73d3e874076a.exe
      C:\Users\Admin\AppData\Local\Temp\fa2b9e4dcfdc8aa431aa73d3e874076a.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3864
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN 1WOV8tOcae1c
    1⤵
      PID:2092
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks.exe /Query /XML /TN 1WOV8tOcae1c > C:\Users\Admin\AppData\Local\Temp\37nXr8.xml
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4844
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\fa2b9e4dcfdc8aa431aa73d3e874076a.exe" /TN 1WOV8tOcae1c /F
      1⤵
      • Creates scheduled task(s)
      PID:744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\fa2b9e4dcfdc8aa431aa73d3e874076a.exe

      Filesize

      384KB

      MD5

      01eb1b9a7c046d3f9566472393390f90

      SHA1

      5ad00ef8bc1cde84a701d2618826f918f4c194c3

      SHA256

      73ed5c5e42501931162860bebb4239a81ea3ecb7084a7a777baf8eb17f3fa2f6

      SHA512

      20ce375a9fc0915dde3e4614020091dffe17f64878d94fdc352f6b066825a4f4bf9027646d383f6825a68814e1858aacff2be57bf132a8819c78e75d1912eb48

    • memory/3864-15-0x00000000016F0000-0x000000000176E000-memory.dmp

      Filesize

      504KB

    • memory/3864-23-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/3864-22-0x00000000004B0000-0x000000000051B000-memory.dmp

      Filesize

      428KB

    • memory/3864-18-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB

    • memory/3864-40-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB

    • memory/4640-0-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB

    • memory/4640-1-0x0000000000400000-0x000000000046B000-memory.dmp

      Filesize

      428KB

    • memory/4640-2-0x0000000025030000-0x00000000250AE000-memory.dmp

      Filesize

      504KB

    • memory/4640-13-0x0000000000400000-0x000000000046B000-memory.dmp

      Filesize

      428KB