Analysis

  • max time kernel
    153s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-03-2024 22:28

General

  • Target

    8657233b83ae7fa42534243b618700431733bf4edc9d97864e250fa15d95592d.exe

  • Size

    229KB

  • MD5

    24233839190b24bee9fb8442540bfbfd

  • SHA1

    ca3a499080cbef642d1ad8e677a82111df491a96

  • SHA256

    8657233b83ae7fa42534243b618700431733bf4edc9d97864e250fa15d95592d

  • SHA512

    7895bc79817bbe298970535e41ce9db9b11bbfd1fcfd32dd0346e48d6596130375d894d76c70c2bd45c154de131e5de74e4d86400f90d9b7ac52ae8cce819190

  • SSDEEP

    6144:2loZMD9EB1/SqctonEPfCqAOYiElX8k7J+btUgJB7j8e1m1DZ:AoZpdSqcwvOYiElX8k7J+btUgJB3w

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Detects executables attemping to enumerate video devices using WMI 1 IoCs
  • Detects executables containing possible sandbox analysis VM names 1 IoCs
  • Detects executables containing possible sandbox analysis VM usernames 1 IoCs
  • Detects executables containing possible sandbox system UUIDs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8657233b83ae7fa42534243b618700431733bf4edc9d97864e250fa15d95592d.exe
    "C:\Users\Admin\AppData\Local\Temp\8657233b83ae7fa42534243b618700431733bf4edc9d97864e250fa15d95592d.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:32
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2828
  • 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=3308 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2272

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/32-0-0x0000028451590000-0x00000284515D0000-memory.dmp

      Filesize

      256KB

    • memory/32-1-0x00007FFC8BF40000-0x00007FFC8CA01000-memory.dmp

      Filesize

      10.8MB

    • memory/32-2-0x000002846BB70000-0x000002846BB80000-memory.dmp

      Filesize

      64KB

    • memory/32-4-0x00007FFC8BF40000-0x00007FFC8CA01000-memory.dmp

      Filesize

      10.8MB