Analysis

  • max time kernel
    13s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 05:14

General

  • Target

    f8889955f844a94357547f9072b88ac421e4658e29195b315039571e511ef5d4.exe

  • Size

    736KB

  • MD5

    bf68397c247f8f3b66e76e23e771b4a5

  • SHA1

    8e48636cfe46a36000ca39984cc30e9a4dbd9f11

  • SHA256

    f8889955f844a94357547f9072b88ac421e4658e29195b315039571e511ef5d4

  • SHA512

    5ae3b42d105de6a0844bfb681218583f37af122fce95d655faa2aa9de458ca246817328c36194a4cf7e3511f9f944cd7630c3910624ae9b47ced09b2853f6191

  • SSDEEP

    12288:BTyjXW+48qWywrU4kGFezOAVuJ5PIbww7F5DO3HYffgcZqOnZo:lIXW/8yw1ez54lI3F5SXYHmOnZo

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 6 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 28 IoCs
  • UPX dump on OEP (original entry point) 28 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 27 IoCs

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

  • Windows security modification 2 TTPs 14 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
      PID:1112
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1168
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
          PID:1204
          • C:\Users\Admin\AppData\Local\Temp\f8889955f844a94357547f9072b88ac421e4658e29195b315039571e511ef5d4.exe
            "C:\Users\Admin\AppData\Local\Temp\f8889955f844a94357547f9072b88ac421e4658e29195b315039571e511ef5d4.exe"
            2⤵
            • Modifies firewall policy service
            • Modifies visibility of file extensions in Explorer
            • Modifies visiblity of hidden/system files in Explorer
            • UAC bypass
            • Windows security bypass
            • Loads dropped DLL
            • Windows security modification
            • Adds Run key to start application
            • Checks whether UAC is enabled
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            • System policy modification
            PID:2784
            • C:\Users\Admin\AppData\Roaming\Microsoft\Office\rundll32.exe
              C:\Users\Admin\AppData\Roaming\Microsoft\Office\rundll32.exe
              3⤵
              • Modifies firewall policy service
              • Modifies visiblity of hidden/system files in Explorer
              • UAC bypass
              • Windows security bypass
              • Deletes itself
              • Executes dropped EXE
              • Windows security modification
              • Checks whether UAC is enabled
              • Enumerates connected drives
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              • System policy modification
              PID:2592
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:1640

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\0F7620AA_Rar\rundll32.exe

            Filesize

            664KB

            MD5

            2eb5d76180ce7b3241b281fa79ab3483

            SHA1

            06293dea80e39c7eb7ee2bdb00d60b58d932fa8a

            SHA256

            e1b9beb4617a720d55afaec364941bb18ea2c456a8b06b30a736f0cbb5c297e8

            SHA512

            35f553c76fc67afb88a6a090fcbad6af3e2faae154c9c84bd869714194012525a2d42b76dad855805f107a37c351f0de08fd9a03d8ddc1dd400d64640d81b90b

          • C:\Windows\SYSTEM.INI

            Filesize

            257B

            MD5

            2886017bdeedb091666c805330d99585

            SHA1

            e8d4f8567f69b88b7d5e146ff8b0d63f45f4e05f

            SHA256

            8f970a9f7f01aac6e29182ec1dbce80f058f23d1c93d0a352ac68a3bac9523c5

            SHA512

            1838e52c6b7af142e4b93232532bb38f56e75bd6d9555ff3b610d58337a527da31669f304ef0352e9a2c3f224e9d8f74a6d60243aa773dcf15048de15d14d7c7

          • C:\rlwjbp.pif

            Filesize

            100KB

            MD5

            50b1b5eebf6225a58f8e5b0d2cc54cc6

            SHA1

            5c2d2dabe70e49990635f54b5b8b5f5e2f4a5763

            SHA256

            a75626106e8fa98554a6c02ae18d3fe49fb079e30280d34b333dea194558802d

            SHA512

            c8ba781c47b58617bdad3e0ea9c01f8bab26e7c0a8c3cc1b7e0a9db40c08bf32658eab2d2e3761dc16d8727080c97d372037542adc42b24250d3f0cdf502fb0b

          • \Users\Admin\AppData\Roaming\Microsoft\Office\rundll32.exe

            Filesize

            736KB

            MD5

            bf68397c247f8f3b66e76e23e771b4a5

            SHA1

            8e48636cfe46a36000ca39984cc30e9a4dbd9f11

            SHA256

            f8889955f844a94357547f9072b88ac421e4658e29195b315039571e511ef5d4

            SHA512

            5ae3b42d105de6a0844bfb681218583f37af122fce95d655faa2aa9de458ca246817328c36194a4cf7e3511f9f944cd7630c3910624ae9b47ced09b2853f6191

          • memory/1112-15-0x0000000000420000-0x0000000000422000-memory.dmp

            Filesize

            8KB

          • memory/2592-60-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-81-0x00000000003E0000-0x00000000003E2000-memory.dmp

            Filesize

            8KB

          • memory/2592-63-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-66-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-147-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-86-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-65-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-154-0x00000000003E0000-0x00000000003E2000-memory.dmp

            Filesize

            8KB

          • memory/2592-61-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-87-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-84-0x00000000003F0000-0x00000000003F1000-memory.dmp

            Filesize

            4KB

          • memory/2592-85-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-62-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-64-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-223-0x0000000002730000-0x00000000027BD000-memory.dmp

            Filesize

            564KB

          • memory/2592-67-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2592-56-0x0000000000400000-0x00000000004C0000-memory.dmp

            Filesize

            768KB

          • memory/2592-89-0x00000000003E0000-0x00000000003E2000-memory.dmp

            Filesize

            8KB

          • memory/2592-58-0x0000000002730000-0x00000000037BE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-23-0x0000000000A50000-0x0000000000A52000-memory.dmp

            Filesize

            8KB

          • memory/2784-55-0x0000000000400000-0x00000000004C0000-memory.dmp

            Filesize

            768KB

          • memory/2784-42-0x0000000000A50000-0x0000000000A52000-memory.dmp

            Filesize

            8KB

          • memory/2784-34-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-28-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-29-0x0000000000A50000-0x0000000000A52000-memory.dmp

            Filesize

            8KB

          • memory/2784-30-0x0000000000A50000-0x0000000000A52000-memory.dmp

            Filesize

            8KB

          • memory/2784-27-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-13-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-0-0x0000000000400000-0x00000000004C0000-memory.dmp

            Filesize

            768KB

          • memory/2784-24-0x0000000000A60000-0x0000000000A61000-memory.dmp

            Filesize

            4KB

          • memory/2784-57-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-10-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-12-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-14-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-26-0x0000000000A60000-0x0000000000A61000-memory.dmp

            Filesize

            4KB

          • memory/2784-9-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-39-0x000000000A800000-0x000000000A8C0000-memory.dmp

            Filesize

            768KB

          • memory/2784-11-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-7-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-8-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB

          • memory/2784-5-0x0000000002420000-0x00000000034AE000-memory.dmp

            Filesize

            16.6MB