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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/11/2023, 17:25

General

  • Target

    NEAS.58129d574276d13cf0744a87d51ee28a.exe

  • Size

    19KB

  • MD5

    58129d574276d13cf0744a87d51ee28a

  • SHA1

    d6ea309607c33a4b064700a4f8b521e5abca5642

  • SHA256

    6f363e914c2b4f121513e2dc9988001d09ce014c20a307e86d8fd039acf23c5a

  • SHA512

    2bfb0d2d3d3ece406c51b83f443f2554679c308463ce934eaa714e9f933f542c31960e205c34df80918af088e077935b62bb006c4b3f05e4ea5d34e7870080aa

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvXO1Bf:rRkiLw3HsDSARGG/WBf

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:636
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3064
        • C:\Users\Admin\AppData\Local\Temp\NEAS.58129d574276d13cf0744a87d51ee28a.exe
          "C:\Users\Admin\AppData\Local\Temp\NEAS.58129d574276d13cf0744a87d51ee28a.exe"
          2⤵
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4820
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\system32\rmass.exe"
            3⤵
            • 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:3096
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:1444

      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

        22KB

        MD5

        2db4f9b1b12e55c473d71dd3e1ff99aa

        SHA1

        7f62bb361d14812e88ed246b9606b688b99d9546

        SHA256

        1537dd445dd5ace7a8b3caa2d02ce365fe7a6ae931bc786097f805ce0d1c8c7e

        SHA512

        3acdd47d347ac2c594700fc98ca7ece46587ed07a85f5e5e114d6a744514a482a6af345970d01369c3f898040f937a298bbbef27699d96b6d3501f8dd8aa45b3

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        23KB

        MD5

        fbf68468d2b53b460a62f4099a83f2d0

        SHA1

        600ada0b2d367f8ce3247a709db820a04cacbce7

        SHA256

        793c94de9e8cb6b64b2e3294c06efc920a09aa5c5b09436e6d05ca59c50d6a03

        SHA512

        f9b6ec97fcfe4040fc6a4d8a72e15e98d098e3a71057a639f860d73a78a26638775ca4d43818608e77d8928296396c4cc4e61018f882c46c3cc88b31caf38e1d

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        58129d574276d13cf0744a87d51ee28a

        SHA1

        d6ea309607c33a4b064700a4f8b521e5abca5642

        SHA256

        6f363e914c2b4f121513e2dc9988001d09ce014c20a307e86d8fd039acf23c5a

        SHA512

        2bfb0d2d3d3ece406c51b83f443f2554679c308463ce934eaa714e9f933f542c31960e205c34df80918af088e077935b62bb006c4b3f05e4ea5d34e7870080aa

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        58129d574276d13cf0744a87d51ee28a

        SHA1

        d6ea309607c33a4b064700a4f8b521e5abca5642

        SHA256

        6f363e914c2b4f121513e2dc9988001d09ce014c20a307e86d8fd039acf23c5a

        SHA512

        2bfb0d2d3d3ece406c51b83f443f2554679c308463ce934eaa714e9f933f542c31960e205c34df80918af088e077935b62bb006c4b3f05e4ea5d34e7870080aa

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        58129d574276d13cf0744a87d51ee28a

        SHA1

        d6ea309607c33a4b064700a4f8b521e5abca5642

        SHA256

        6f363e914c2b4f121513e2dc9988001d09ce014c20a307e86d8fd039acf23c5a

        SHA512

        2bfb0d2d3d3ece406c51b83f443f2554679c308463ce934eaa714e9f933f542c31960e205c34df80918af088e077935b62bb006c4b3f05e4ea5d34e7870080aa

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

        Filesize

        1KB

        MD5

        6f47b62de25d1745e296a06b3f98ed19

        SHA1

        a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

        SHA256

        15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

        SHA512

        dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

      • memory/1444-13-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/3096-66-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/4820-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/4820-10-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB