Analysis

  • max time kernel
    243s
  • max time network
    191s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 15:52

General

  • Target

    154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe

  • Size

    308KB

  • MD5

    4f0c4f7a2be67072665ac5f48c756da0

  • SHA1

    5ed66fa081c0a07cc079b1548e91556a6b60b832

  • SHA256

    154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b

  • SHA512

    5c627141d716cff548f3b8fbb09b2edea7d23b0b04a3f9759e9e371aa85dd6f8082309b677c9bd1b119c5ad1011889cf72fa648b8077c5f596fa4b6c390d3a9e

  • SSDEEP

    6144:YyAWbOUfseiFDyHqpzgxuHN6q9OM3ESNt84ULuFMtBZBmE6UTQVwoSu:KAO19oq1QI4y3H/8xxBZBmE6UTQuoSu

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 17 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe
    "C:\Users\Admin\AppData\Local\Temp\154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:968
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\FzuYk.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:680
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Window Updates" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /f
        3⤵
        • Adds Run key to start application
        PID:276
    • C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1804
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:432
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1472
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:1820
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1968
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:684
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:844
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:280

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\FzuYk.bat

    Filesize

    158B

    MD5

    1954c7e666c5b4d1117ef07bc0c9b8ec

    SHA1

    559e3c0273c1463e9184027b749bdaad0a372681

    SHA256

    35e0dbc8b455ca38976157ce9d0293fd6cdca20f46f1cb69058a1e0f0af6f693

    SHA512

    3939de8d0ab7e67b59ff8bebed5580dafd38d8785193fd42a289728500761a68b9e6660605e19e10d4278dd106fea4b273a208f25485e7389c8f19b2958c926a

  • C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • \Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • \Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • \Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • \Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • \Users\Admin\AppData\Roaming\Windows Update\winupdt.exe

    Filesize

    308KB

    MD5

    aeda6473b0a426b9ae26470eba559f28

    SHA1

    f4bb63dbe46607860843c0c939833c98e35d0162

    SHA256

    4fa1596ebf89d1004fe01961181d9b43f38ba3f4d6d405f99fd0596800b5d3a9

    SHA512

    eb994873532dfc3c303af0cdf91d2232cbbc2a15488fa2e046706026a8d78c54262cfe1b86519a4c32d230731bc91997610d921276f121ce02c4a30b48fe5d2d

  • memory/276-60-0x0000000000000000-mapping.dmp

  • memory/280-91-0x0000000000000000-mapping.dmp

  • memory/432-87-0x0000000000000000-mapping.dmp

  • memory/680-58-0x0000000000000000-mapping.dmp

  • memory/684-90-0x0000000000000000-mapping.dmp

  • memory/844-88-0x0000000000000000-mapping.dmp

  • memory/968-68-0x0000000000400000-0x0000000000591000-memory.dmp

    Filesize

    1.6MB

  • memory/968-54-0x0000000000400000-0x0000000000591000-memory.dmp

    Filesize

    1.6MB

  • memory/968-57-0x00000000761F1000-0x00000000761F3000-memory.dmp

    Filesize

    8KB

  • memory/1472-86-0x0000000000000000-mapping.dmp

  • memory/1768-66-0x0000000000000000-mapping.dmp

  • memory/1768-77-0x0000000000400000-0x0000000000591000-memory.dmp

    Filesize

    1.6MB

  • memory/1792-72-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/1792-81-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/1792-78-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/1792-76-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/1792-73-0x000000000045A8D0-mapping.dmp

  • memory/1792-92-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/1804-84-0x0000000000000000-mapping.dmp

  • memory/1820-89-0x0000000000000000-mapping.dmp

  • memory/1968-85-0x0000000000000000-mapping.dmp