Analysis

  • max time kernel
    1800s
  • max time network
    1797s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231129-en
  • resource tags

    arch:x64arch:x86image:win11-20231129-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02-12-2023 02:21

General

  • Target

    update.exe

  • Size

    15.3MB

  • MD5

    8c5d426590cccc0ca0f27ebed418da4e

  • SHA1

    040ec9658021981f3e1546ee0a9dd26e2da43f04

  • SHA256

    cfb1170c66210f82f98157c0b2ea62e5372056c6a4d36e7f0db4dc9754ef00c3

  • SHA512

    8ec23652539776123e4af1b2f7a384bc0b88f4020b935ca90ddaa8fade239785a181d7bc6f1a9ba6884793fbf997c9f2f920aa968153e1b72f201f38b269682b

  • SSDEEP

    393216:J79rqs77+THrAQUSA1In5Q7JNp1ruYVOgDKg:t9OsGTLBUSAin5qPv

Malware Config

Signatures

  • Detect PurpleFox Rootkit 9 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 12 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Raccoon

    Raccoon is an infostealer written in C++ and first seen in 2019.

  • Raccoon Stealer V2 payload 3 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 13 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\update.exe
    "C:\Users\Admin\AppData\Local\Temp\update.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Sets DLL path for service in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:3552
    • C:\Users\Admin\AppData\Local\Temp\N.exe
      C:\Users\Admin\AppData\Local\Temp\\N.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2496
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\N.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1464
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:2876
    • C:\Users\Admin\AppData\Local\Temp\HD_update.exe
      C:\Users\Admin\AppData\Local\Temp\HD_update.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:2376
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
    1⤵
      PID:4128
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
      1⤵
        PID:4580
      • C:\Windows\SysWOW64\TXPlatfor.exe
        C:\Windows\SysWOW64\TXPlatfor.exe -auto
        1⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1788
        • C:\Windows\SysWOW64\TXPlatfor.exe
          C:\Windows\SysWOW64\TXPlatfor.exe -acsi
          2⤵
          • Drops file in Drivers directory
          • Sets service image path in registry
          • Executes dropped EXE
          • Suspicious behavior: LoadsDriver
          • Suspicious use of AdjustPrivilegeToken
          PID:2404

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\HD_X.dat

        Filesize

        2.3MB

        MD5

        d253cedc48cee15f1e0321aca235f307

        SHA1

        28e169cfd0e8ebbcaafb12b744148b99d87bc281

        SHA256

        c7897842f7d1db6f62cd3031a00ec28f2af00dbf5ef70998ad51fce43e7e33ed

        SHA512

        84501cc77bd22d9484157e77751b9444d61a2af63ea8b3fa1c94f8a7c7241e6111330fe67e329fa6717e5fac946e1d5a8071429f98474b59e652f1962aba3eae

      • C:\Users\Admin\AppData\Local\Temp\HD_update.exe

        Filesize

        13.0MB

        MD5

        bcabfc8a72168c9c59967950ba586367

        SHA1

        4b11cde5ca21ddc2126c5dede0170f3afbeda938

        SHA256

        8129a2a6764c59fdfbb1945be92d8452a9a6502c6047e39c5b8d9a3c982ca192

        SHA512

        f756cf50bf5fffac5309de6041027947020ea65b819245c156ee92519c72d4422559981d9880808b5a34a2514942ec85d98c4ed63f4b04f2441e565003e7fac2

      • C:\Users\Admin\AppData\Local\Temp\HD_update.exe

        Filesize

        13.0MB

        MD5

        bcabfc8a72168c9c59967950ba586367

        SHA1

        4b11cde5ca21ddc2126c5dede0170f3afbeda938

        SHA256

        8129a2a6764c59fdfbb1945be92d8452a9a6502c6047e39c5b8d9a3c982ca192

        SHA512

        f756cf50bf5fffac5309de6041027947020ea65b819245c156ee92519c72d4422559981d9880808b5a34a2514942ec85d98c4ed63f4b04f2441e565003e7fac2

      • C:\Users\Admin\AppData\Local\Temp\N.exe

        Filesize

        377KB

        MD5

        4a36a48e58829c22381572b2040b6fe0

        SHA1

        f09d30e44ff7e3f20a5de307720f3ad148c6143b

        SHA256

        3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

        SHA512

        5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

      • C:\Users\Admin\AppData\Local\Temp\N.exe

        Filesize

        377KB

        MD5

        4a36a48e58829c22381572b2040b6fe0

        SHA1

        f09d30e44ff7e3f20a5de307720f3ad148c6143b

        SHA256

        3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

        SHA512

        5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

      • C:\Users\Admin\AppData\Local\Temp\R.exe

        Filesize

        941KB

        MD5

        8dc3adf1c490211971c1e2325f1424d2

        SHA1

        4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

        SHA256

        bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

        SHA512

        ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

      • C:\Users\Admin\AppData\Local\Temp\R.exe

        Filesize

        941KB

        MD5

        8dc3adf1c490211971c1e2325f1424d2

        SHA1

        4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

        SHA256

        bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

        SHA512

        ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

      • C:\Windows\SysWOW64\240633984.txt

        Filesize

        899KB

        MD5

        b1fb2ef428d3e00eee8b68e7b1a7a7ee

        SHA1

        395c78f18ab36ad9a0019ff30c7cf975f273f040

        SHA256

        d41e00aa8bd169c99efa2f907f2055f89309bc6002eca9a69494ffcf09149c96

        SHA512

        8b5f0255084605364c66e432795c08f45e86663c098b5c74bc2ad420979c17983bace9b85a113ca14c560d8d46ac88ec536051769798fccd15c47dafce739548

      • C:\Windows\SysWOW64\TXPlatfor.exe

        Filesize

        377KB

        MD5

        4a36a48e58829c22381572b2040b6fe0

        SHA1

        f09d30e44ff7e3f20a5de307720f3ad148c6143b

        SHA256

        3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

        SHA512

        5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

      • C:\Windows\SysWOW64\TXPlatfor.exe

        Filesize

        377KB

        MD5

        4a36a48e58829c22381572b2040b6fe0

        SHA1

        f09d30e44ff7e3f20a5de307720f3ad148c6143b

        SHA256

        3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

        SHA512

        5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

      • C:\Windows\SysWOW64\TXPlatfor.exe

        Filesize

        377KB

        MD5

        4a36a48e58829c22381572b2040b6fe0

        SHA1

        f09d30e44ff7e3f20a5de307720f3ad148c6143b

        SHA256

        3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

        SHA512

        5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

      • memory/1788-21-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/1788-24-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/1788-25-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/1788-23-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/1788-32-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2376-45-0x0000000001A80000-0x0000000001A81000-memory.dmp

        Filesize

        4KB

      • memory/2376-58-0x0000000000400000-0x0000000001809000-memory.dmp

        Filesize

        20.0MB

      • memory/2376-57-0x0000000000400000-0x0000000001809000-memory.dmp

        Filesize

        20.0MB

      • memory/2376-60-0x0000000000400000-0x0000000001809000-memory.dmp

        Filesize

        20.0MB

      • memory/2404-40-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2404-38-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2404-42-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2496-26-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2496-16-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2496-14-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2496-15-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB

      • memory/2496-12-0x0000000010000000-0x00000000101B6000-memory.dmp

        Filesize

        1.7MB