Overview

overview

10

Static

static

winhost.exe

windows7_x64

10

winhost.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    73s
  • platform
    windows10_x64
  • resource
    win10v200430
  • 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
ransomwarepersistencespywaredharma

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

  • Suspicious use of WriteProcessMemory 16 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 35193 IoCs
  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Dharma

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

    ransomwaredharma
  • Suspicious behavior: EnumeratesProcesses 572 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Drops desktop.ini file(s) 70 IoCs
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Adds Run entry to start application 2 TTPs 3 IoCs
    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\winhost.exe
    "C:\Users\Admin\AppData\Local\Temp\winhost.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops startup file
    • Suspicious behavior: EnumeratesProcesses
    • Drops desktop.ini file(s)
    • Adds Run entry to start application
    PID:3008
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:856
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1000
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3324
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3260
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2996
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:3656
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1016
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            • Modifies service
            PID:1032

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Download Submit

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Download Submit

          • memory/856-1-0x0000000000000000-mapping.dmp

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          • memory/1000-2-0x0000000000000000-mapping.dmp

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          • memory/1016-7-0x0000000000000000-mapping.dmp

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          • memory/2996-5-0x0000000000000000-mapping.dmp

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          • memory/3260-4-0x0000000000000000-mapping.dmp

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          • memory/3324-3-0x0000000000000000-mapping.dmp

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          • memory/3656-6-0x0000000000000000-mapping.dmp

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          • memory/3984-0-0x0000000000000000-mapping.dmp

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