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Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2023, 08:07

General

  • Target

    NEAS.7d652a1374b838d985eabef0e78199b0.exe

  • Size

    19KB

  • MD5

    7d652a1374b838d985eabef0e78199b0

  • SHA1

    19c61eaf6d9cb56aea25bc989287a4f8d43b8599

  • SHA256

    252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

  • SHA512

    c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvXK0:rRkiLw3HsDSARGG/60

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • Sets file execution options in registry 2 TTPs 3 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 7 IoCs

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

  • Windows security modification 2 TTPs 4 IoCs
  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:628
    • C:\Users\Admin\AppData\Local\Temp\NEAS.7d652a1374b838d985eabef0e78199b0.exe
      "C:\Users\Admin\AppData\Local\Temp\NEAS.7d652a1374b838d985eabef0e78199b0.exe"
      1⤵
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3944
      • C:\Windows\SysWOW64\rmass.exe
        "C:\Windows\system32\rmass.exe"
        2⤵
        • Windows security bypass
        • Drops file in Drivers directory
        • Modifies Installed Components in the registry
        • Sets file execution options in registry
        • Executes dropped EXE
        • Windows security modification
        • Modifies WinLogon
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1972
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3260
      • C:\Windows\SysWOW64\rmass.exe
        --k33p
        1⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:1536

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\RECOVER32.DLL

        Filesize

        5KB

        MD5

        2b2c28a7a01f9584fe220ef84003427f

        SHA1

        5fc023df0b5064045eb8de7f2dbe26f07f6fec70

        SHA256

        9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb

        SHA512

        39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

      • C:\Windows\SysWOW64\ahuy.exe

        Filesize

        21KB

        MD5

        2ad0037a7bfb7eddb85a23d2cd41f244

        SHA1

        7b457bd12edae90d4b03acdf1a1f3c7a2ef6fcd0

        SHA256

        c75422a32a9dcd67f5596a75c2cb085892d21e59c0574c787076d0bf5293c8d4

        SHA512

        24e0276a1a927cbcead955186d4b8f88c073be30a57cb4a48be31a9f4a5b5a3852970139846b571ca1307a68cd2c63464a11c307b4726138416bf47afa9f37f7

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        22KB

        MD5

        6852a0f6a58035d0a1637d1c6bfcb837

        SHA1

        92344a5a990ac7fb64d1299adab337527ee3e8bf

        SHA256

        eb74f66e68a20c52eac3a694d509ea9487854b36dfbefaec98f0b677fa7aea83

        SHA512

        45765fdc4be0acc1420da131a3c7d53f8dbba93f887c1cad29be27a9847398a6d2b29271f6ce2e0cee986e33f5bf3d06082265a68d0bfc56743c29b8d701d32b

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • C:\Windows\System32\drivers\etc\hosts

        Filesize

        1KB

        MD5

        6f47b62de25d1745e296a06b3f98ed19

        SHA1

        a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

        SHA256

        15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

        SHA512

        dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

      • memory/1536-45-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/1972-41-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/3944-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/3944-9-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB