Analysis

  • max time kernel
    104s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 19:37

General

  • Target
    aa1efe82b7a8462a234757d822dd2466.exe
  • Size 614KB
  • Sample240107-ybtmbadfb2
  • SHA256 7cca4f23bd94e5cf9208a12bae1d251a38365c73a89322de96aae09be86f40bf
  • MD5 SHA1 SHA512 SSDEEP

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

  • Detect Neshta payload 10 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Sality

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

  • Windows security bypass 2 TTPs 6 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 2 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa1efe82b7a8462a234757d822dd2466.exe
    "C:\Users\Admin\AppData\Local\Temp\aa1efe82b7a8462a234757d822dd2466.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Users\Admin\AppData\Local\Temp\3582-490\aa1efe82b7a8462a234757d822dd2466.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\aa1efe82b7a8462a234757d822dd2466.exe"
      2⤵
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      PID:1436

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        AcroRd32.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe
        • Size 897KB
        • SHA256 754d47f95ce671da871da32afa71fcf46868439e52e78e6eb29d085d5e2b141c
        • MD5 SHA1 SHA512 SSDEEP

        aa1efe82b7a8462a234757d822dd2466.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\aa1efe82b7a8462a234757d822dd2466.exe
        • Size 574KB
        • SHA256 a2ca75d551c5143691815c7b61ee2d7baa469cc758bf25d4344dad852c7a2162
        • MD5 SHA1 SHA512 SSDEEP

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsl7C74.tmp\System.dll
        • Size 10KB
        • SHA256 d9d3ffa4c7d7a152f435f4777e72aa1b6a6c0555f277e59eedebc587c3b66ba5
        • MD5 SHA1 SHA512 SSDEEP

        memory/1436-11-0x0000000000400000-0x0000000000454000-memory.dmp

        memory/1436-25-0x0000000002270000-0x00000000032FE000-memory.dmp

        memory/1436-26-0x0000000000400000-0x0000000000454000-memory.dmp

        memory/1436-27-0x0000000002270000-0x00000000032FE000-memory.dmp

        memory/3368-114-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-98-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-115-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-125-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-126-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-127-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-128-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-130-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3368-131-0x0000000000400000-0x000000000041B000-memory.dmp