Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 01:24

General

  • Target

    5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe

  • Size

    227KB

  • MD5

    7f32dcbb00de079c31ff7895ae9c0560

  • SHA1

    e80841a355b8dce9955b9bbba63f02a4ad31a836

  • SHA256

    5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f

  • SHA512

    776cabc7d2442d90655eec0f434c811146b7f569dbace3c8609a582c167af5990ec25d1d7a8eb111744cecbdcd43d37af7d623eb97eb414ad926371083f7aadc

  • SSDEEP

    6144:bloZM+9EB1/SqctonEPfCqAu0+prdmK13Up7a6rhgj8e1m5l:5oZQdSqcwvu0+prdmK13Up7a6rhQM

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 2 IoCs
  • Umbral

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

  • Detects executables attemping to enumerate video devices using WMI 2 IoCs
  • Detects executables containing possible sandbox analysis VM names 2 IoCs
  • Detects executables containing possible sandbox analysis VM usernames 2 IoCs
  • Detects executables containing possible sandbox system UUIDs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe
    "C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1260

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1956-0-0x0000000001340000-0x0000000001380000-memory.dmp

    Filesize

    256KB

  • memory/1956-1-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

    Filesize

    9.9MB

  • memory/1956-2-0x0000000000B20000-0x0000000000BA0000-memory.dmp

    Filesize

    512KB

  • memory/1956-3-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

    Filesize

    9.9MB