Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/02/2024, 12:04

General

  • Target

    Trojan.Win32.Small.exe

  • Size

    97KB

  • MD5

    1d5f8c24450948f2bfcc89c80b3d5f97

  • SHA1

    8b7563cb9fc9e4d269a0fb77ab5a5045e4ad2317

  • SHA256

    de00fe780f212cae5d248e9cfbcbb2864aa3a66e1c018dea2aa81bac770dab50

  • SHA512

    681e70c8dab349f8bb9001b02805e54d39a0c1219774eabc4fdc782b06ad2c8991732a85453e9ff69ad1cf758a32111d6178bbc71664a255cb032bc9ea70b5b4

  • SSDEEP

    1536:qiRRk7iOAYZBazwRhNKLYk4G7um6nrO0+BeTiiPMZlkCRjImd0:qQk7/FZh8UkRz6nrOLgOuEkC1Dd0

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
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 26 IoCs
  • UPX dump on OEP (original entry point) 27 IoCs
  • UPX packed file 26 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 9 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1168
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
        PID:1320
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
          PID:1200
          • C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe
            "C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe"
            2⤵
            • Modifies firewall policy service
            • UAC bypass
            • Windows security bypass
            • 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:2776
        • C:\Windows\system32\taskhost.exe
          "taskhost.exe"
          1⤵
            PID:1092

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/1092-6-0x0000000001BC0000-0x0000000001BC2000-memory.dmp

                  Filesize

                  8KB

                • memory/2776-31-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-34-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-5-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-2-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-9-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-13-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-16-0x0000000000290000-0x0000000000292000-memory.dmp

                  Filesize

                  8KB

                • memory/2776-18-0x00000000002A0000-0x00000000002A1000-memory.dmp

                  Filesize

                  4KB

                • memory/2776-20-0x00000000002A0000-0x00000000002A1000-memory.dmp

                  Filesize

                  4KB

                • memory/2776-17-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-35-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-24-0x0000000000290000-0x0000000000292000-memory.dmp

                  Filesize

                  8KB

                • memory/2776-22-0x0000000000290000-0x0000000000292000-memory.dmp

                  Filesize

                  8KB

                • memory/2776-29-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-30-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-0-0x0000000000400000-0x0000000000412000-memory.dmp

                  Filesize

                  72KB

                • memory/2776-4-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-33-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-23-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-36-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-38-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-39-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-40-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-42-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-48-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-50-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-52-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-55-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-56-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-59-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-60-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-62-0x00000000006B0000-0x000000000176A000-memory.dmp

                  Filesize

                  16.7MB

                • memory/2776-66-0x0000000000290000-0x0000000000292000-memory.dmp

                  Filesize

                  8KB

                • memory/2776-80-0x0000000000400000-0x0000000000412000-memory.dmp

                  Filesize

                  72KB