Overview

overview

8

Static

static

Doitman.exe

windows7_x64

8

Doitman.exe

windows10_x64

8

Analysis

  • max time kernel
    299s
  • max time network
    239s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    09/12/2021, 07:42

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General

  • Target

    Doitman.exe

  • Size

    125KB

  • MD5

    f28ac8c53e1776f0bb151bfe969cb50c

  • SHA1

    ac6d92aa5213bf0431999688f63c37d72a6206bf

  • SHA256

    e95902e83c3cd7ceef665f91faba200dd487a073996e34ae3f041a00d0a061a5

  • SHA512

    5ccb69f839dda459fca95a0731a152f831e32e23521e47506710a824a1d5779d59ce1752f623b700a1416263a5537f7c92c16f43c6c9ded028839493bbed8e7c

Score
8/10
persistenceransomwarespywarestealer

Malware Config

Signatures

  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops startup file 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 6 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 54 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Doitman.exe
    "C:\Users\Admin\AppData\Local\Temp\Doitman.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Drops file in Windows directory
    PID:972
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\rJRMCpqvFjP6UJrNQ6c6JG2hjyUbdXrQV9IuekyY.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:560
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\!!ReadmeForHelp!!.txt
    1⤵
      PID:1832
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:1324
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1208 -s 3792
        1⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1832
        • C:\Windows\Explorer.EXE
          "C:\Windows\Explorer.EXE"
          2⤵
          • Loads dropped DLL
          • Drops desktop.ini file(s)
          • Checks processor information in registry
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:2044
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 2044 -s 3380
            3⤵
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\Explorer.EXE
              "C:\Windows\Explorer.EXE"
              4⤵
              • Loads dropped DLL
              • Drops desktop.ini file(s)
              • Checks processor information in registry
              • Modifies Internet Explorer settings
              • Modifies registry class
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1800
              • C:\Windows\system32\NOTEPAD.EXE
                "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\!!ReadmeForHelp!!.txt
                5⤵
                  PID:1832

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/560-60-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

          Filesize

          8KB

          Download

        • memory/972-53-0x0000000000160000-0x0000000000161000-memory.dmp

          Filesize

          4KB

          Download

        • memory/972-56-0x0000000000290000-0x00000000002A2000-memory.dmp

          Filesize

          72KB

          Download

        • memory/972-55-0x0000000000280000-0x0000000000281000-memory.dmp

          Filesize

          4KB

          Download

        • memory/972-57-0x0000000000470000-0x0000000000472000-memory.dmp

          Filesize

          8KB

          Download

        • memory/972-58-0x0000000000430000-0x0000000000431000-memory.dmp

          Filesize

          4KB

          Download

        • memory/1724-106-0x0000000001D60000-0x0000000001D61000-memory.dmp

          Filesize

          4KB

          Download

        • memory/1800-121-0x0000000004350000-0x0000000004351000-memory.dmp

          Filesize

          4KB

          Download

        • memory/1832-66-0x0000000000460000-0x0000000000461000-memory.dmp

          Filesize

          4KB

          Download

        • memory/2044-72-0x00000000040C0000-0x00000000040C1000-memory.dmp

          Filesize

          4KB

          Download