Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    11-03-2024 10:36

General

  • Target

    411c2e3611e8ee701918cfe17399da79.exe

  • Size

    2.5MB

  • MD5

    411c2e3611e8ee701918cfe17399da79

  • SHA1

    a01d2ceb1b9d0e002eb67a00fbac9238285dce85

  • SHA256

    f0ebd23eac064a10da288dbf3b9db45bdf5e107c970e57f7974710cad01aed04

  • SHA512

    c68a62e0342cdaaa23a8ad385551dff3d7f60e34c28c63797ef8d5969e714df6b0f7fa66a8904aaf65c034c26860f21453434e8678a48d149b2137054ee57b50

  • SSDEEP

    49152:YBO8QRm2I9bC9hY8PU5sevK7F6wd0HL5xRpMrpaKE9eFodKe/HT0:Y88QRmVluhnPyhyx30HlUpaKpodtHT0

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

gamemodz.duckdns.org:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    sysupdate.exe

  • copy_folder

    sysupdate

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-FEY33U

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

xworm

Version

3.1

C2

gamemodz.duckdns.org:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Detect Xworm Payload 1 IoCs
  • Detect ZGRat V1 34 IoCs
  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Xworm

    Xworm is a remote access trojan written in C#.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Renames multiple (192) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 7 IoCs
  • Drops desktop.ini file(s) 34 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\411c2e3611e8ee701918cfe17399da79.exe
    "C:\Users\Admin\AppData\Local\Temp\411c2e3611e8ee701918cfe17399da79.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2936
    • C:\Users\Admin\AppData\Local\Temp\sysupdate.exe
      "C:\Users\Admin\AppData\Local\Temp\sysupdate.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2472
      • C:\ProgramData\sysupdate\sysupdate.exe
        "C:\ProgramData\sysupdate\sysupdate.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1892
        • \??\c:\program files (x86)\internet explorer\iexplore.exe
          "c:\program files (x86)\internet explorer\iexplore.exe"
          4⤵
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2328
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe
            5⤵
              PID:2320
            • C:\Users\Admin\AppData\Local\Temp\shout.exe
              "C:\Users\Admin\AppData\Local\Temp\shout.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2780
              • C:\Users\Admin\AppData\Roaming\svchost.exe
                "C:\Users\Admin\AppData\Roaming\svchost.exe"
                6⤵
                • Drops startup file
                • Executes dropped EXE
                • Drops desktop.ini file(s)
                • Sets desktop wallpaper using registry
                • Suspicious behavior: AddClipboardFormatListener
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2100
                • C:\Windows\system32\NOTEPAD.EXE
                  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
                  7⤵
                  • Opens file in notepad (likely ransom note)
                  PID:2852
      • C:\Users\Admin\AppData\Local\Temp\411c2e3611e8ee701918cfe17399da79.exe
        C:\Users\Admin\AppData\Local\Temp\411c2e3611e8ee701918cfe17399da79.exe
        2⤵
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:2920

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\Documents\read_it.txt

      Filesize

      140B

      MD5

      ee20a3aaf13c2d8805ede471f1f3ed3c

      SHA1

      bac14bc149af77885de0f6997fe3f3bf3f9686ad

      SHA256

      b9afbd14a42e996a8de6eba45b8a6df17a958f1b269913eab89484f62d373919

      SHA512

      8dea66d1bb1ee359b61fa32e3a45a1d66cf8987fdbec4218ef258b58aaaf9475e77bff2d40f9f28f4a75f321de6f86de6f42ab3cd7afee4e213ffbe3ae03f714

    • \Users\Admin\AppData\Local\Temp\shout.exe

      Filesize

      84KB

      MD5

      7051dcbe9a0837a312b09a5ae3b42430

      SHA1

      3553ff8725a57929e438228bf141b695c13cecb4

      SHA256

      ce750c7054359e9e88556d48f7eea341374b74f494caed48251185b54c9ed644

      SHA512

      2e82160bff1fbdd6f6a9f0210dfaf831650fdefdf8e3bb70c3c2717122b107ef3610c5c5f55908843df7ba3bd3bbefc40b9d1dda07877083cbd2ab8b090a276c

    • \Users\Admin\AppData\Local\Temp\sysupdate.exe

      Filesize

      483KB

      MD5

      bdfa7710dfc213d8babcd7348440deeb

      SHA1

      ecd7d6ad5a3e0cc8c24ce1f12a40b0c86a769f98

      SHA256

      79ec51c588fccbe876f58de8a0256e27de65aa14f245615c42bd92cc640063fe

      SHA512

      663eb74fba1e38d3f930c0d73787309f86b85852cbccae1b44d3056a6073a95494c1526dc98d132f84a71e379babc5bd6819e76643f82fcd5591e264825fb2ee

    • memory/2100-4863-0x0000000001260000-0x000000000127C000-memory.dmp

      Filesize

      112KB

    • memory/2100-4867-0x0000000000320000-0x00000000003A0000-memory.dmp

      Filesize

      512KB

    • memory/2100-4865-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

      Filesize

      9.9MB

    • memory/2100-5308-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

      Filesize

      9.9MB

    • memory/2100-5309-0x0000000000320000-0x00000000003A0000-memory.dmp

      Filesize

      512KB

    • memory/2780-4864-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

      Filesize

      9.9MB

    • memory/2780-4857-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

      Filesize

      9.9MB

    • memory/2780-4856-0x0000000000D40000-0x0000000000D5C000-memory.dmp

      Filesize

      112KB

    • memory/2920-5306-0x00000000744C0000-0x0000000074BAE000-memory.dmp

      Filesize

      6.9MB

    • memory/2920-5307-0x00000000004F0000-0x0000000000530000-memory.dmp

      Filesize

      256KB

    • memory/2920-4848-0x00000000004F0000-0x0000000000530000-memory.dmp

      Filesize

      256KB

    • memory/2920-4811-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/2920-4813-0x00000000744C0000-0x0000000074BAE000-memory.dmp

      Filesize

      6.9MB

    • memory/2936-26-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-4780-0x0000000000AB0000-0x0000000000AB1000-memory.dmp

      Filesize

      4KB

    • memory/2936-3-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-34-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-36-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-38-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-42-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-40-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-44-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-48-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-50-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-46-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-52-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-54-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-56-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-58-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-62-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-64-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-66-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-60-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-4779-0x0000000004580000-0x00000000045C0000-memory.dmp

      Filesize

      256KB

    • memory/2936-32-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-4781-0x0000000004C50000-0x0000000004CC8000-memory.dmp

      Filesize

      480KB

    • memory/2936-4782-0x0000000004500000-0x000000000454C000-memory.dmp

      Filesize

      304KB

    • memory/2936-4-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-4807-0x0000000074D90000-0x000000007547E000-memory.dmp

      Filesize

      6.9MB

    • memory/2936-30-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-1-0x0000000074D90000-0x000000007547E000-memory.dmp

      Filesize

      6.9MB

    • memory/2936-28-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-20-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-24-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-22-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-10-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-18-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-16-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-14-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-12-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-8-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-6-0x0000000004A20000-0x0000000004C4A000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-2-0x0000000004A20000-0x0000000004C50000-memory.dmp

      Filesize

      2.2MB

    • memory/2936-0-0x0000000000CC0000-0x0000000000F36000-memory.dmp

      Filesize

      2.5MB