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Analysis

  • max time kernel
    53s
  • max time network
    37s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    22/10/2023, 17:33

General

  • Target

    NEAS.fa35b2daeea4893c39c7757406645af0.exe

  • Size

    473KB

  • MD5

    fa35b2daeea4893c39c7757406645af0

  • SHA1

    5a4db2dfa8b4065ec4a07eac157d9d0b9c6609a7

  • SHA256

    8ef16d53048177e8d3084bb8bbc4c1f7f291b56d25e15f6523aab7712805856e

  • SHA512

    a24a57ea24a1751bed2186c267190ecc18feefed2419a94566d7839b8034fa6fe9c695a4b0de7bbf73bb6486d857eb61016733f2cca93238dd305bee7f23edf1

  • SSDEEP

    1536:ur3Z5IfQmv81a1xyXHZ+NGQSLNmCm6oyz7jBd7qDmbNPMJAVC+++6:yJOfQm01mxyXHZKG7pm6j77C

Score
8/10

Malware Config

Signatures

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.fa35b2daeea4893c39c7757406645af0.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.fa35b2daeea4893c39c7757406645af0.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\rwmhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:2912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\NEASFA~1.EXE > nul
      2⤵
      • Deletes itself
      PID:1036
  • C:\Windows\Debug\rwmhost.exe
    C:\Windows\Debug\rwmhost.exe
    1⤵
    • Executes dropped EXE
    PID:2796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Debug\rwmhost.exe

    Filesize

    473KB

    MD5

    226563f4ad3686cf36b8679b29f4de67

    SHA1

    3b325b0458f73e5b63df449ea4e7fbaf121963fa

    SHA256

    8d978e747c7672cac1a44c72e4b64b1b3b1ae1a428bde1b1426ecc9b1daa131b

    SHA512

    77c617b9bd0ff6584b8ddd1f944875863b0df5f52afc87ca055183bbccc23482eb6292dd6dc07075f37ebc1cee1ef4e6f2f9a5bf122373ef6168f48758d2f3be

  • C:\Windows\debug\rwmhost.exe

    Filesize

    473KB

    MD5

    226563f4ad3686cf36b8679b29f4de67

    SHA1

    3b325b0458f73e5b63df449ea4e7fbaf121963fa

    SHA256

    8d978e747c7672cac1a44c72e4b64b1b3b1ae1a428bde1b1426ecc9b1daa131b

    SHA512

    77c617b9bd0ff6584b8ddd1f944875863b0df5f52afc87ca055183bbccc23482eb6292dd6dc07075f37ebc1cee1ef4e6f2f9a5bf122373ef6168f48758d2f3be