Analysis

  • max time kernel
    122s
  • max time network
    124s
  • 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

    65KB

  • MD5

    f43a7a07216c219244fa4857b38f348b

  • SHA1

    1d263f2bfce236226d45a91341855f0477c7a79f

  • SHA256

    ced57cc956cff4501b2118093057c638e6638b388ba23f8c0f32732dcbcdfbde

  • SHA512

    d2d8f58db911b1a128cfc09665e2898d70aab5870f778f3724836cff2ce09037e7b2fcf19810e16ffc49e71bdbcf09580d1dbd72c21e477d634a8d9671a7bf24

  • SSDEEP

    1536:MU9cfutdSC5kAFDD/XyD8nlkelYOWwc1lUhhBpmER+uCedF:MUHd9Fv/XuSk/1STBpmEBCS

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 38 IoCs
  • UPX dump on OEP (original entry point) 38 IoCs
  • UPX packed file 38 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 21 IoCs

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

  • Drops autorun.inf file 1 TTPs 2 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
      PID:1112
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1180
      • C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe
        "C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe"
        1⤵
        • Modifies firewall policy service
        • UAC bypass
        • Windows security bypass
        • Windows security modification
        • Checks whether UAC is enabled
        • Enumerates connected drives
        • Drops autorun.inf file
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2152

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\nyfuwr.pif

              Filesize

              97KB

              MD5

              5be292f3ce841cebe6c1d98a4b655f82

              SHA1

              895828267d7f82d57a1c29efeac4d194a2357394

              SHA256

              c6b457ae8c735f860b5e04e8100b793d65eacfb5ee791aa2a346a6060368c974

              SHA512

              e8fa96ec090a926fcbcc02c40632f68741b9a8fcdb2d69819f4a0502c1578ab92f36dd2d297ab7b328ecc9b36a59ef94e57f17d2c55cb61529937a0cd001ca52

            • memory/1112-6-0x0000000001C20000-0x0000000001C22000-memory.dmp

              Filesize

              8KB

            • memory/2152-30-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-27-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-7-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-5-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-4-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-8-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-16-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-17-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-18-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-19-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-20-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-21-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-22-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-23-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-24-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-26-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-32-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-28-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-3-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-0-0x0000000000400000-0x0000000000412000-memory.dmp

              Filesize

              72KB

            • memory/2152-42-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-36-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-38-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-34-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-46-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-48-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-55-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-57-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-59-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-61-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-63-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-64-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-65-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-67-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-69-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-71-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-73-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-75-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB

            • memory/2152-1-0x00000000005A0000-0x000000000165A000-memory.dmp

              Filesize

              16.7MB