Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2024 10:52

General

  • Target

    Njrat .204.exe

  • Size

    351KB

  • MD5

    498b9af2dfaba5960cac346ab9d293a0

  • SHA1

    751e69b28a08b6c86092ca696731a9c677b947f4

  • SHA256

    f187f157d9a9ec539e8bf1e98a309bf2777a2270b872086937620e8149914001

  • SHA512

    28eeafc324cd0dd8092215307dfd3e2fa4a95dc162bf923a146712661b7ed70bf986f28ede01c6de2cfbf11ce00331d58ca6fc5e37e0e940538792c595132c3b

  • SSDEEP

    6144:B4oZoaeVHPtHgTIAaZgCwDx7axHU0unC28ejI8T7CxBt25:6oZ8HPvWCwjXCsIiCxBt

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Umbral family
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Njrat .204.exe
    "C:\Users\Admin\AppData\Local\Temp\Njrat .204.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:988

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1724-0-0x000007FEF5023000-0x000007FEF5024000-memory.dmp

    Filesize

    4KB

  • memory/1724-1-0x0000000000160000-0x00000000001BE000-memory.dmp

    Filesize

    376KB

  • memory/1724-2-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

    Filesize

    9.9MB

  • memory/1724-3-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

    Filesize

    9.9MB