Analysis

  • max time kernel
    14s
  • max time network
    26s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-uk
  • resource tags

    arch:x64arch:x86image:win10-20240404-uklocale:uk-uaos:windows10-1703-x64systemwindows
  • submitted
    06-05-2024 18:45

General

  • Target

    TOOLSNXCLXN.exe

  • Size

    229KB

  • MD5

    8628b9dd8871af6a292f3a6e08386eaf

  • SHA1

    54424a37b205150d43b419eafb3d7bcb3dbf0f29

  • SHA256

    1040523f9dac2fb0ff0b30e5996aea8a5c326e685bc3633e5ea14f443aba7919

  • SHA512

    cc4633141e35c707d56299e161ec1de13adc8a42c4f6ef874e4b9a7b5f44e543113f58b3f19610bef227676bc00e4ad643e4cdf6e2a6f2f2f4323c65fec805d2

  • SSDEEP

    6144:2loZMafOe1FzxtE8WdhQ3cbbxM8KDXqBVa07nIrvTuuupJ8eFJL4w:AoZnvzx3MbVM8KDXqBVa07nIrAJX

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TOOLSNXCLXN.exe
    "C:\Users\Admin\AppData\Local\Temp\TOOLSNXCLXN.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:432
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1952

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/432-0-0x00007FFF41603000-0x00007FFF41604000-memory.dmp

    Filesize

    4KB

  • memory/432-1-0x00000180BB030000-0x00000180BB070000-memory.dmp

    Filesize

    256KB

  • memory/432-2-0x00007FFF41600000-0x00007FFF41FEC000-memory.dmp

    Filesize

    9.9MB

  • memory/432-4-0x00007FFF41600000-0x00007FFF41FEC000-memory.dmp

    Filesize

    9.9MB