Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2024 21:54

General

  • Target

    ExumNOVA.exe

  • Size

    228KB

  • MD5

    f3d936c9efade8ccd0a43ba19ee3ad80

  • SHA1

    5aafc1994763497e589203d08c727cdbf481a474

  • SHA256

    685aea80db0fd039accee42b17bb7110e3c26529f361dac85f2a6d751982ce89

  • SHA512

    b81fa072dc5c0ad1cf08dfcf4d81984d1430f0dbf595d736d0b51249fb302229f116feb908f78e329d0cff5b81b0d517457f4b92c46dcdb0d552a78143c24f55

  • SSDEEP

    6144:uloZMzrIkd8g+EtXHkv/iD4Nhi9fVeGJlMFXSy3g2b8e1mWi:4oZcL+EP8Nhi9fVeGJlMFXSy3/o

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\ExumNOVA.exe
    "C:\Users\Admin\AppData\Local\Temp\ExumNOVA.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4248

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1568-0-0x000002154EE50000-0x000002154EE90000-memory.dmp

    Filesize

    256KB

  • memory/1568-1-0x00007FFD65260000-0x00007FFD65D21000-memory.dmp

    Filesize

    10.8MB

  • memory/1568-2-0x0000021569500000-0x0000021569510000-memory.dmp

    Filesize

    64KB

  • memory/1568-4-0x00007FFD65260000-0x00007FFD65D21000-memory.dmp

    Filesize

    10.8MB