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Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-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
  • Loads dropped DLL 3 IoCs
  • UPX packed file 13 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:424
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1252
        • C:\Users\Admin\AppData\Local\Temp\NEAS.7d652a1374b838d985eabef0e78199b0.exe
          "C:\Users\Admin\AppData\Local\Temp\NEAS.7d652a1374b838d985eabef0e78199b0.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2032
          • 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
            • Loads dropped DLL
            • 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:2112
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2860

      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

        e242a8595ee535787a5e92565d19f6a8

        SHA1

        0721930a96846c119a9a3453fc97975a5d99294d

        SHA256

        081e2fe179c0c6d741a7b902a13a0d0152e1da3482aa4c7c90beec0a69c85df8

        SHA512

        0e789777ed999a740d88ca5878624aa33ce127313f27218a0eb154c0cd776b7824a649eb727f1bdafb8ff731572bfddc7fae8afba525c67b915cf9b70bad2c98

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        22KB

        MD5

        170cb533de6207cae553f8616da11b64

        SHA1

        eb20f931030d3bc4fb928231b0df149c32129db1

        SHA256

        6adaf4832efb8cde838c5d7bfeada7f4b4be334c3da69824aebb2537ca27b0dc

        SHA512

        6ea0cb34c8da006c8f6646974d7ec451b07c580c9aeaf4aac83d82632b2efa65399e3950f8588450d2e5da8c71225671ce2e2b782b767fa02fe9affd9d930a8d

      • 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\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        7d652a1374b838d985eabef0e78199b0

        SHA1

        19c61eaf6d9cb56aea25bc989287a4f8d43b8599

        SHA256

        252cfd35b7303b91369dd00c1a0d5ab8b4cf208018e40d14656e3069c8e464bc

        SHA512

        c30cee59a39185c1f88dab26fbed8f9cd8f9a73b5c27aef0cb03561747213ace07e6a319204366d400caee5108b2366e4d4b4789f4ea1339222e0b0a8db34ed3

      • memory/2032-11-0x0000000000320000-0x0000000000331000-memory.dmp

        Filesize

        68KB

      • memory/2032-10-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2032-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2112-22-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2112-52-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2112-55-0x00000000003B0000-0x00000000003C1000-memory.dmp

        Filesize

        68KB

      • memory/2112-25-0x00000000003B0000-0x00000000003C1000-memory.dmp

        Filesize

        68KB

      • memory/2860-26-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB