Overview

overview

10

Static

static

winhost.exe

windows7_x64

10

winhost.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    11-07-2020 02:30

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General

  • Target

    winhost.exe

  • Size

    92KB

  • MD5

    37a1431c3ed1ad5264b8964b929ee919

  • SHA1

    fa26065771340320edea37b00c9453c51f66c6b3

  • SHA256

    fbbe5adbf18c37ddee49aec819a48eedd7d6c329ec0d1eab71905d5fed08ba7d

  • SHA512

    86420527eb5c8d7f53711159e426702c85fb54c5bc5d777ba3852602ee907cd7631e92d8784369011ccf956a427c43c0f2260ada6b2e82dcfe76edf2a2a374bc

Score
10/10
ransomwaredharmapersistencespyware

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\FILES ENCRYPTED.txt

Ransom Note
all your data has been locked us You want to return? write email [email protected] or [email protected]

Signatures

  • Adds Run entry to start application 2 TTPs 3 IoCs
    persistence
  • Interacts with shadow copies 2 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Drops startup file 5 IoCs
  • Drops file in Program Files directory 27835 IoCs
  • Drops desktop.ini file(s) 77 IoCs
  • Suspicious behavior: EnumeratesProcesses 289 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Drops file in System32 directory 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

    ransomwaredharma

Processes

  • C:\Users\Admin\AppData\Local\Temp\winhost.exe
    "C:\Users\Admin\AppData\Local\Temp\winhost.exe"
    1⤵
    • Adds Run entry to start application
    • Suspicious use of WriteProcessMemory
    • Drops startup file
    • Drops file in Program Files directory
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Drops file in System32 directory
    PID:824
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1296
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1048
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1532
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1552
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1952
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1916
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:1980
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          PID:1960
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Modifies service
        • Suspicious use of AdjustPrivilegeToken
        PID:1700
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\FILES ENCRYPTED.txt
        1⤵
          PID:1152

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1980-22-0x0000000005FB0000-0x0000000005FD3000-memory.dmp

          Filesize

          140KB

          Download

        • memory/1980-23-0x00000000046B0000-0x00000000046BB000-memory.dmp

          Filesize

          44KB

          Download