Analysis

  • max time kernel
    118s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    02-11-2023 16:53

General

  • Target

    NEAS.fc34a99ffc6fe87f821aca721957a900.dll

  • Size

    120KB

  • MD5

    fc34a99ffc6fe87f821aca721957a900

  • SHA1

    4381dec01f71e137b74a069fb1eb78c51ec748ae

  • SHA256

    3423c91b299f12561a21a3a4366454f0b7b152c8d6a22001ea34b606719fe736

  • SHA512

    abc97dfe9e0116c1ce1f38bf76f6e2fe0b306e1ebc5e627e79a577265591082675e1a3c47d7f25c33d47b8971e6baa70356746fbe0f6f16e30c62da3e8b016df

  • SSDEEP

    3072:l1+G3m8VaaQuTFmC0ZsfWqhEZMmP20U3uTkiUFkLejNmOPQ:l1x39hTUxs1hEZMm1U3uAiUFkLej

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

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Sality

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 23 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 8 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\DllHost.exe
    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
    1⤵
      PID:1760
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1248
        • C:\Windows\system32\rundll32.exe
          rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fc34a99ffc6fe87f821aca721957a900.dll,#1
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1200
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.fc34a99ffc6fe87f821aca721957a900.dll,#1
            3⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1800
            • C:\Users\Admin\AppData\Local\Temp\f76650a.exe
              C:\Users\Admin\AppData\Local\Temp\f76650a.exe
              4⤵
              • Modifies firewall policy service
              • UAC bypass
              • Windows security bypass
              • Executes dropped EXE
              • Windows security modification
              • Checks whether UAC is enabled
              • Enumerates connected drives
              • Drops file in Windows directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              • System policy modification
              PID:1440
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1172
        • C:\Windows\system32\taskhost.exe
          "taskhost.exe"
          1⤵
            PID:1104

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\f76650a.exe

            Filesize

            97KB

            MD5

            6fa5791c26a632d4a50b6249d4f7e3e7

            SHA1

            ba24d533ba95d3187d9ba8210cd74fc562335c29

            SHA256

            593c2c1fe43cc1de7d9cfa85918053df8eddba2d00f33198213743ec54bac18b

            SHA512

            59b201f868f024c6ebe6857d92ae13796f3266f37881bb7afdd4b0d56933b396020b913590f6b1ececa78d8258dce9f4c3d2d023f6d59c2e44132a13c754dd9e

          • C:\Users\Admin\AppData\Local\Temp\f76650a.exe

            Filesize

            97KB

            MD5

            6fa5791c26a632d4a50b6249d4f7e3e7

            SHA1

            ba24d533ba95d3187d9ba8210cd74fc562335c29

            SHA256

            593c2c1fe43cc1de7d9cfa85918053df8eddba2d00f33198213743ec54bac18b

            SHA512

            59b201f868f024c6ebe6857d92ae13796f3266f37881bb7afdd4b0d56933b396020b913590f6b1ececa78d8258dce9f4c3d2d023f6d59c2e44132a13c754dd9e

          • \Users\Admin\AppData\Local\Temp\f76650a.exe

            Filesize

            97KB

            MD5

            6fa5791c26a632d4a50b6249d4f7e3e7

            SHA1

            ba24d533ba95d3187d9ba8210cd74fc562335c29

            SHA256

            593c2c1fe43cc1de7d9cfa85918053df8eddba2d00f33198213743ec54bac18b

            SHA512

            59b201f868f024c6ebe6857d92ae13796f3266f37881bb7afdd4b0d56933b396020b913590f6b1ececa78d8258dce9f4c3d2d023f6d59c2e44132a13c754dd9e

          • \Users\Admin\AppData\Local\Temp\f76650a.exe

            Filesize

            97KB

            MD5

            6fa5791c26a632d4a50b6249d4f7e3e7

            SHA1

            ba24d533ba95d3187d9ba8210cd74fc562335c29

            SHA256

            593c2c1fe43cc1de7d9cfa85918053df8eddba2d00f33198213743ec54bac18b

            SHA512

            59b201f868f024c6ebe6857d92ae13796f3266f37881bb7afdd4b0d56933b396020b913590f6b1ececa78d8258dce9f4c3d2d023f6d59c2e44132a13c754dd9e

          • memory/1104-18-0x00000000001A0000-0x00000000001A2000-memory.dmp

            Filesize

            8KB

          • memory/1440-34-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-39-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-63-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-13-0x0000000000400000-0x0000000000412000-memory.dmp

            Filesize

            72KB

          • memory/1440-14-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-16-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-61-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-17-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-20-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-24-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-33-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-57-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-36-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-37-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-38-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-53-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-40-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-41-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-51-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-43-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-45-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-46-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-47-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1440-49-0x0000000000650000-0x000000000170A000-memory.dmp

            Filesize

            16.7MB

          • memory/1800-42-0x00000000001E0000-0x00000000001E6000-memory.dmp

            Filesize

            24KB

          • memory/1800-10-0x00000000001E0000-0x00000000001F2000-memory.dmp

            Filesize

            72KB

          • memory/1800-0-0x0000000010000000-0x0000000010020000-memory.dmp

            Filesize

            128KB

          • memory/1800-2-0x0000000010000000-0x0000000010020000-memory.dmp

            Filesize

            128KB

          • memory/1800-12-0x00000000001E0000-0x00000000001F2000-memory.dmp

            Filesize

            72KB