Analysis

  • max time kernel
    179s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    04-02-2022 08:35

General

  • Target

    Vega Sky Tools.exe

  • Size

    407KB

  • MD5

    2ad0998f87934e69a5096fc036c04a01

  • SHA1

    30e95b536fdcd6953bf0cb21557bf3e7970535a9

  • SHA256

    5a877117c8502edae43d30c15f39bf566b420919533e91ea44ce8e5e2b6e76c4

  • SHA512

    149ef87ec93771eac235d7baf11f74a466ff59dc959be49f0862b024a5f5e5a61b20e952bdf70573220edf3ef93a1816fae0ebdbc2138ef0efe8093d9a016bb6

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

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

  • Executes dropped EXE 1 IoCs
  • Sets service image path in registry 2 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

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

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

  • Modifies data under HKEY_USERS 41 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vega Sky Tools.exe
    "C:\Users\Admin\AppData\Local\Temp\Vega Sky Tools.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4072
    • C:\Users\Admin\AppData\Local\Temp\3582-490\Vega Sky Tools.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\Vega Sky Tools.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4032
      • C:\Windows\system32\fondue.exe
        "C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
        3⤵
          PID:1688
    • C:\Windows\System32\WaaSMedicAgent.exe
      C:\Windows\System32\WaaSMedicAgent.exe 509580387c73e55081e304f0becf032b exYODoUCP0ikMCSb/vNmBw.0.1.0.0.0
      1⤵
      • Modifies data under HKEY_USERS
      PID:4180
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:3104

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\Vega Sky Tools.exe
      MD5

      5d14213a5987a82d0eb0459eebc806f5

      SHA1

      ec7104bd18d6d2707bb7dfe5b50f4c21804d6b06

      SHA256

      e47bb0910cb9bf68c08c6fad52a43bf51a0b0c2d11489aaec05570c8d7e76f83

      SHA512

      573d66c930d069bc8f6801b04fc6755264b9c4c7b5ed07c6042a11f6dabf13181d3ec9f4dac91da7481e8b673089acb9833eb66129fe4dc705413e59967ad9fb

    • C:\Users\Admin\AppData\Local\Temp\3582-490\Vega Sky Tools.exe
      MD5

      5d14213a5987a82d0eb0459eebc806f5

      SHA1

      ec7104bd18d6d2707bb7dfe5b50f4c21804d6b06

      SHA256

      e47bb0910cb9bf68c08c6fad52a43bf51a0b0c2d11489aaec05570c8d7e76f83

      SHA512

      573d66c930d069bc8f6801b04fc6755264b9c4c7b5ed07c6042a11f6dabf13181d3ec9f4dac91da7481e8b673089acb9833eb66129fe4dc705413e59967ad9fb

    • memory/3104-175-0x00000195B5B30000-0x00000195B5B40000-memory.dmp
      Filesize

      64KB

    • memory/3104-176-0x00000195B5B90000-0x00000195B5BA0000-memory.dmp
      Filesize

      64KB

    • memory/3104-177-0x00000195B8890000-0x00000195B8894000-memory.dmp
      Filesize

      16KB