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Analysis

  • max time kernel
    155s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 10:11

General

  • Target

    3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383.exe

  • Size

    193KB

  • MD5

    67af7bfc251b66e12da5d08a1e45fba0

  • SHA1

    67b7a665847884f855321b33136052bdc9fc4b72

  • SHA256

    3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383

  • SHA512

    a7e62bd841be84f4f66a3e99a7191ffa554c6ba488b895f3e23d04c11da9128650cf142589a98fc6ae51fd22ae4c6807bf3e538797271e0ecb755e98e8fd52fb

  • SSDEEP

    3072:YNObDvd2vvqgZ9nhEDAVIonwz8WNvjQH2vOBkvuHozZhDHKW4d6Enial0WRBAgVI:YBvvqgZ9nh2jQH2WBSURzlBjI

Malware Config

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383.exe
    "C:\Users\Admin\AppData\Local\Temp\3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\ProgramData\yahoo.exe
      "C:\ProgramData\yahoo.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\yahoo.exe" "yahoo.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1576

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\yahoo.exe

    Filesize

    193KB

    MD5

    67af7bfc251b66e12da5d08a1e45fba0

    SHA1

    67b7a665847884f855321b33136052bdc9fc4b72

    SHA256

    3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383

    SHA512

    a7e62bd841be84f4f66a3e99a7191ffa554c6ba488b895f3e23d04c11da9128650cf142589a98fc6ae51fd22ae4c6807bf3e538797271e0ecb755e98e8fd52fb

  • C:\ProgramData\yahoo.exe

    Filesize

    193KB

    MD5

    67af7bfc251b66e12da5d08a1e45fba0

    SHA1

    67b7a665847884f855321b33136052bdc9fc4b72

    SHA256

    3c5f8cb08c9304a4926891598e294dbdb403b30102079b324aeb2a98a5297383

    SHA512

    a7e62bd841be84f4f66a3e99a7191ffa554c6ba488b895f3e23d04c11da9128650cf142589a98fc6ae51fd22ae4c6807bf3e538797271e0ecb755e98e8fd52fb

  • memory/3552-138-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/3552-140-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/4936-132-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/4936-133-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/4936-137-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB