Analysis

  • max time kernel
    118s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    08/12/2021, 06:20

General

  • Target

    11898.exe

  • Size

    250KB

  • MD5

    693dec99f9767c1d004f6289065471a0

  • SHA1

    91cd7cd10fd1c075f47b84d97f17cc2c1e92e9ac

  • SHA256

    56dc200341cac71492c374d9251791c60308d96d4387a8bbae999fdb5d841375

  • SHA512

    b98942b9eff9e1a9a4dac0c3a53c76138a471419b68d77513bc8854824b8ddb707ec51344d13fdd659f9707985efee7f1b9669e357987d9e65382e76fa6f34c1

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\11898.exe
    "C:\Users\Admin\AppData\Local\Temp\11898.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Public\Videos\hgfdfds.exe
      "C:\Users\Public\Videos\hgfdfds.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\svchost.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\svchost.exe" -start
        3⤵
        • Executes dropped EXE
        • Modifies system certificate store
        PID:1496
      • C:\Windows\SysWOW64\notepad.exe
        notepad.exe
        3⤵
          PID:1052

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/568-55-0x000007FEFC651000-0x000007FEFC653000-memory.dmp

      Filesize

      8KB

    • memory/1052-65-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB

    • memory/1052-70-0x00000000000A0000-0x00000000000A1000-memory.dmp

      Filesize

      4KB

    • memory/1324-58-0x00000000758F1000-0x00000000758F3000-memory.dmp

      Filesize

      8KB