Resubmissions

11-05-2024 06:45

240511-hjc2jabd7z 10

11-05-2024 06:40

240511-hfp7padg83 10

Analysis

  • max time kernel
    161s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 06:40

General

  • Target

    Free Nitro.exe

  • Size

    62KB

  • MD5

    d01e6cc12d314d7d1d3714fa9be0ca80

  • SHA1

    9cb53ff747461cf4f122d6356296341bbd2fe203

  • SHA256

    5010be4c22df0349619aede47aa8e234e16985c8dbd0ca86de12c778b402bf58

  • SHA512

    2fb687819b5cf9ad93b702b553b8d5760e8bb946abd436da72f44918f141ec9be1c6bb02252400da9d9846f70db61f993af783c7a996d6523be582a16d8a767e

  • SSDEEP

    768:OKsMqCXfVcWrPM9ZkiANIUkwYLDwUzc80gmq3oP/oDF:OKsejM9ZkiAP2r/0O8/op

Malware Config

Signatures

  • 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) 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Free Nitro.exe
    "C:\Users\Admin\AppData\Local\Temp\Free Nitro.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4352
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3024
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2304
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:4344

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1152-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

        Filesize

        4KB

      • memory/1152-1-0x0000000000B30000-0x0000000000B46000-memory.dmp

        Filesize

        88KB

      • memory/1152-2-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

        Filesize

        4KB

      • memory/1152-3-0x0000000005C70000-0x0000000006214000-memory.dmp

        Filesize

        5.6MB

      • memory/1152-4-0x00000000057B0000-0x0000000005842000-memory.dmp

        Filesize

        584KB

      • memory/1152-5-0x0000000074ED0000-0x0000000075680000-memory.dmp

        Filesize

        7.7MB

      • memory/1152-6-0x0000000074ED0000-0x0000000075680000-memory.dmp

        Filesize

        7.7MB