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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
    16/01/2024, 23:27

General

  • Target

    612573b52e295ad8712af2a901d7f43c.exe

  • Size

    60KB

  • MD5

    612573b52e295ad8712af2a901d7f43c

  • SHA1

    0a82efa1a4bd688bbb813018befd9312e962e455

  • SHA256

    d92f59c8bcd52ff02fd0f769cb91193b1af3fc101ef6b036337446a5174ee7b7

  • SHA512

    674563ab5b9914878fe6a724b07a69dd83d0c6a6070bf2b59430b0d3d4439e9930e583bb7424223bfeac73b1558cfbe806c3aa7e784e2120b0948b768d6afe4f

  • SSDEEP

    768:NOucKn7n1JMDNANIUHvLDwUzc80gmq3oP/oDT:NO2MDNAPPr/0O8/oP

Malware Config

Signatures

  • Nitro

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

  • Renames multiple (94) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 5 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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
  • Program crash 2 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\612573b52e295ad8712af2a901d7f43c.exe
    "C:\Users\Admin\AppData\Local\Temp\612573b52e295ad8712af2a901d7f43c.exe"
    1⤵
    • 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:4484
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3748
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2428
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 2196
      2⤵
      • Program crash
      PID:1500
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 2196
      2⤵
      • Program crash
      PID:4768
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4484 -ip 4484
    1⤵
      PID:1540
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4484 -ip 4484
      1⤵
        PID:5076

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4484-0-0x0000000000330000-0x0000000000346000-memory.dmp

        Filesize

        88KB

      • memory/4484-1-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB

      • memory/4484-2-0x00000000051D0000-0x0000000005774000-memory.dmp

        Filesize

        5.6MB

      • memory/4484-3-0x0000000004D20000-0x0000000004DB2000-memory.dmp

        Filesize

        584KB

      • memory/4484-4-0x0000000005010000-0x0000000005020000-memory.dmp

        Filesize

        64KB

      • memory/4484-44-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB

      • memory/4484-50-0x0000000005010000-0x0000000005020000-memory.dmp

        Filesize

        64KB

      • memory/4484-103-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

        Filesize

        40KB

      • memory/4484-104-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB