Analysis

  • max time kernel
    91s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    12-08-2021 11:21

General

  • Target

    95e9c3bbefa543ca925e7699636bb0c1.exe

  • Size

    60KB

  • MD5

    95e9c3bbefa543ca925e7699636bb0c1

  • SHA1

    167b2604d081b98e85b51bd359c6b0bd169738e5

  • SHA256

    329f8b9afd9c32b4afd6602067d7ec87a64cd83cb5945df6d4ed0a7c80e16c63

  • SHA512

    c211d5d7e3dfc7dbdeaa734bbbfb36bcffaca81a1394f3b26a1c9e40da7a05392d857926ad60589d548ff7ad8c8cd680bd6481faf1889f4cd529cba7a9d3a472

Malware Config

Signatures

  • Nitro

    A ransomware that demands Discord nitro gift codes to decrypt files.

  • Modifies extensions of user files 16 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 5 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\95e9c3bbefa543ca925e7699636bb0c1.exe
    "C:\Users\Admin\AppData\Local\Temp\95e9c3bbefa543ca925e7699636bb0c1.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3520
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3920

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/516-114-0x0000000000100000-0x0000000000101000-memory.dmp

    Filesize

    4KB

  • memory/516-116-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

    Filesize

    4KB

  • memory/516-117-0x0000000004970000-0x0000000004971000-memory.dmp

    Filesize

    4KB

  • memory/516-120-0x00000000048D0000-0x0000000004DCE000-memory.dmp

    Filesize

    5.0MB

  • memory/516-121-0x0000000000A10000-0x0000000000A11000-memory.dmp

    Filesize

    4KB

  • memory/516-122-0x00000000048D0000-0x0000000004DCE000-memory.dmp

    Filesize

    5.0MB

  • memory/516-123-0x00000000048D0000-0x0000000004DCE000-memory.dmp

    Filesize

    5.0MB

  • memory/3520-118-0x0000000000000000-mapping.dmp

  • memory/3920-119-0x0000000000000000-mapping.dmp