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Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    17/11/2023, 17:44

General

  • Target

    NEAS.21bea3cbf86d29540f5ad0e2cbe644f3.exe

  • Size

    19KB

  • MD5

    21bea3cbf86d29540f5ad0e2cbe644f3

  • SHA1

    6eb18ceee7b8420dd4a0151ced950a740dbbb325

  • SHA256

    9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

  • SHA512

    6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvXaB7fp:rRkiLw3HsDSARGG/2bp

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 14 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\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1212
      • C:\Users\Admin\AppData\Local\Temp\NEAS.21bea3cbf86d29540f5ad0e2cbe644f3.exe
        "C:\Users\Admin\AppData\Local\Temp\NEAS.21bea3cbf86d29540f5ad0e2cbe644f3.exe"
        2⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1964
        • 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:1420
          • C:\Windows\SysWOW64\rmass.exe
            --k33p
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:2200
    • C:\Windows\system32\winlogon.exe
      winlogon.exe
      1⤵
        PID:424

      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

        b927e0d7ddf33d700b30a0df417ff3cf

        SHA1

        9429cc716268dc19ec6d1fc21484e6352934e2c7

        SHA256

        ee5b9ee5cdb466d307a4e3865f6eb8de976b36d8a4042fc04180d866471b4e33

        SHA512

        37096a5cd9de199bab6d66e37afcb6b4c88eee93519a19b727315f7417bef8e734665929f2651d7e126d5edda8fe2413ccd53e089286537a76d9440654637926

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        22KB

        MD5

        ed9a855a0b2e24d317137d5b2cc14cb2

        SHA1

        9f828d5111a593fd9e854add2feecaf7001249dc

        SHA256

        60953234ca387dcd8cacca8c29fb516514dfd7ea4343e464ddcaecd62c803491

        SHA512

        d32904630bc190f6da97c3bcfd815b261273ad83a30ccb086edeaf59f926215997fef7c4b3ccb0904487c1c151bff5e5488b211e882db76b7070b82f664cac72

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        21bea3cbf86d29540f5ad0e2cbe644f3

        SHA1

        6eb18ceee7b8420dd4a0151ced950a740dbbb325

        SHA256

        9b8b745b7de3cd754e9d7a86217429c21d1f178c736bdffab29b0b7a989b3e35

        SHA512

        6bb51c9cc0d0ff621f18f7e6800935b315f1eeda84c987bb279f6377b6879b5f0e2f8775b0719549093e06cd4a98551599aecf00ac741c12fd0f8db21159ce7b

      • memory/1420-22-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/1420-26-0x00000000003E0000-0x00000000003F1000-memory.dmp

        Filesize

        68KB

      • memory/1420-60-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/1964-7-0x00000000002C0000-0x00000000002D1000-memory.dmp

        Filesize

        68KB

      • memory/1964-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/1964-11-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2200-61-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2200-25-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB