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Analysis

  • max time kernel
    156s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    17/11/2023, 00:42

General

  • Target

    NEAS.c57ead958ef99c2b4c140baa6ce333c0.exe

  • Size

    21KB

  • MD5

    c57ead958ef99c2b4c140baa6ce333c0

  • SHA1

    6bac44ca490c20f8600950e37bfe85285b4de282

  • SHA256

    f64f4c98c3ed3b6bddd386825eb449cbec31bb25a84729b768295f88402b7677

  • SHA512

    279d05564714e099574671cd9466002a443f6efe32cb21f066845ddd9f0a1fd9e67c7bad9ffa456905d1aec09773dfd429b5adc174d80e7f5f3bbcb3d5f2d35e

  • SSDEEP

    384:jIz4sOPwP1mSKBmjpLxoYiekKrYGsUikOPkxOXayYl6mMyIzpegjX:jIUsddqUj4YilKrz4Pk4pYI9D

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 12 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 1 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:1196
        • C:\Users\Admin\AppData\Local\Temp\NEAS.c57ead958ef99c2b4c140baa6ce333c0.exe
          "C:\Users\Admin\AppData\Local\Temp\NEAS.c57ead958ef99c2b4c140baa6ce333c0.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:2580
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\SysWOW64\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:2360
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2832

      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

        a43c4dde4cda9997195bfd741082eb1e

        SHA1

        2b10cd5a221161da1a327951bff70f7961fcaeb3

        SHA256

        a3744001db2d5152d7e8200729fadc76921c12e3fa1dd2e5fa9b7b2a18a7af85

        SHA512

        7972ff02d41b024ad7fc84e16993739962938ed0a7dfcf4b87b68c67536bc0380c3cde8bab8eef2658951799d38aa8f4e888b64acc080079d9db43ea401de522

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        22KB

        MD5

        f957319116b86d85ed9dbeeec71a1e6e

        SHA1

        1bf11559cb48a857c5555e404997c21058f47d68

        SHA256

        eb78cf52238524bc8d00375355f56ce317aad21b73221c3197bab7fa40ac8fc2

        SHA512

        df1ba9e185532d03cffce6231ae16ce53f784525508118e63878b56f184c7a53d832f21a8bee973df91badb03997d1f6ded5d70b45a5b33d1e98a99bf2c3a03e

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • \Windows\SysWOW64\rmass.exe

        Filesize

        19KB

        MD5

        aab73f099c13687484d94d91b431eb7a

        SHA1

        20588702447ca2fe4b29b5ad4381e9fd6415cd95

        SHA256

        9c86f4f520d1a90f9395ce38453db3fb0d716f52986af691467004bb52de4fec

        SHA512

        b2e4e44e39fcb6528c4490a2c976f4faa5a892e1f2b6b806a368fb856a2ef46416eb5a1dc9414113547063c2feed15c40b6060805466ca6a7d9fb71a7a02c388

      • memory/2360-23-0x00000000002B0000-0x00000000002C1000-memory.dmp

        Filesize

        68KB

      • memory/2360-11-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2360-52-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2360-92-0x00000000002B0000-0x00000000002C1000-memory.dmp

        Filesize

        68KB

      • memory/2580-9-0x0000000000020000-0x0000000000031000-memory.dmp

        Filesize

        68KB

      • memory/2580-8-0x0000000000400000-0x0000000000403000-memory.dmp

        Filesize

        12KB

      • memory/2580-2-0x0000000000020000-0x0000000000031000-memory.dmp

        Filesize

        68KB

      • memory/2832-24-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB