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PUA_ONESYSTEMCARE.GA

February 05, 2018
 ALIASES:

HEUR:RiskTool.Win32.SystemCare.gen (Kaspersky); PUP.Optional.OneSystemCare (Malwarebytes);

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes


  TECHNICAL DETAILS

File Size:

5,769,888 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

01 Dec 2016

Autostart Technique

The scheduled task executes the malware every:

  • One System CarePeriod
  • One System Care Monitor
  • One System Care Run Delay
  • One System Care Task

Dropping Routine

This Potentially Unwanted Application drops the following files:

  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\One System Care\One System Care on the Web.url
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\One System Care\Launch One System Care.lnk
  • %All Users Profile%\d1051927-4923-1\BIT3715.tmp
  • %All Users Profile%\d1051927-4923-1\d1051927-4923-1.d
  • %All Users Profile%\d1051927-4d51-0\BIT3FE3.tmp
  • %All Users Profile%\d1051927-4d51-0\d1051927-4d51-0.d
  • %Application Data%\One System Care\Languages\English.xml
  • %Application Data%\One System Care\Languages\Swedish.xml
  • %Application Data%\One System Care\Languages\French.xml
  • %Application Data%\One System Care\Languages\German.xml
  • %Application Data%\One System Care\Languages\Danish.xml
  • %Application Data%\One System Care\Languages\Italian.xml
  • %Application Data%\One System Care\Languages\Dutch.xml
  • %Application Data%\One System Care\Languages\Norwegian.xml
  • %Application Data%\One System Care\Languages\Spanish.xml
  • %Application Data%\One System Care\Languages\Portuguese.xml
  • %Application Data%\One System Care\Languages\Parameters.xml
  • %Program Files%\OneSystemCare\CleanupConsole.exe
  • %Program Files%\OneSystemCare\OSCShellExtension.dll
  • %Program Files%\OneSystemCare\SystemConsole.exe
  • %Program Files%\OneSystemCare\SystemCash.exe
  • %Program Files%\OneSystemCare\uninstall.bmp
  • %Program Files%\OneSystemCare\cancel.bmp
  • %Program Files%\OneSystemCare\icon.ico
  • %Program Files%\OneSystemCare\Uninstaller.exe
  • %Program Files%\OneSystemCare\OneSystemCare.exe
  • %Program Files%\OneSystemCare\OneSystemCare.ini
  • %System Root%\Users\Public\Desktop\Launch One System Care.lnk
  • %Windows%\Tasks\One System CarePeriod.job

(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

  • http://{BLOCKED}stemcare.info/inst?sid=83195246-F39B-4EA2-ADF5-EC3521958BFD&hid=ba77811f427d63a74658c42ee94c46d95749d2d8&os=6.1&tr=331002584-US-244&a=NA&adm=1&x64=0&sil=0&st=201602051&e=200
  • http://{BLOCKED}stemcare.info/inst?sid=83195246-F39B-4EA2-ADF5-EC3521958BFD&st=0&e=210
  • http://{BLOCKED}ro.org/u/
  • http://{BLOCKED}t.info/u/?a=5PiF369VB8n8jRCh__bSg1ZvTPS348FxIOhsujXuDgbdJncbmjYsgrnpm6aseBWRDO3FEIMmnDbB8Id0AW0_EppB6whHRKliARWIQ-C_UbvtOVV_mibtMXhrluC5-As2CpJrccO4ZJhHYhcWA-sEefTlrlqQfdSi6pb766bIEcYifw99Q0Lek8ywRlsH--X3xPeSrs3Lrt_AKOp7pFGmqxGXk73RuHmaS9pOmeIUxDF7AmGd9d8QspUi8ZqvG-Ktz9v-iyhm2aEfTRo6Iu59vPE6FE0LSbt1NAgsaY8nBLbOgZFkPQ2VppBIilhAAw-Cq_4G6K0ikNAAzjLt3ok-i6QZcfsJQVUNlbxNw7DYImSZ_EYmd5XDR8NsA09Ge21pci_xkBe-uWfwFhewhD3pmcALT9nVIvI9Ox8gpkVSdWauKZ0uNChVTFZwedoOERMxbRPzl0h3nkHG2jJx99XS0dbDyhfHLSRWQJKHNsB2KKTqlR6tYKbgpSkVVK0y4vi7C9WAbHUYV9SneslWxOY9FuYooBuw2AByrjsSpJa5A0SxorJ9_JKJfgc6Uz2T9lVZwQ8BYh7xkUBPL3S-BmD2KNlnJJV_aa_ykWtOawgurT2V4qSCbyNZBthgoRbcX4Bc0mBNRkT9X3bTi2vOya-vluV6rTc5A8CqLueRtnNdiBopmzcTM0eUCkwA0Ykh3d_MfV76DJmuIqFtugYUTe4F2NjlpgQSzAIUUAnWm-Wawbs_Mz4tXXH33q06bw-CSeRFNgXa5BICgPvhGvh23smsSy0V3FGvnXrMqxdewj4foB4URwLvEP37UOSx5_hUc60UPMtQKeekkVM8QSRwt8gg1GHEPaGHjsL-HCmGJY8ewazeummZ4XP6E971ICoDtgASVWK33jSc96BneP-ET3aXtuCrOBdqqaiZOakka5C7EDXmgZW_4iCn6P65C_MrAGkBcwyiA44JCDc_rQPQtvsGmMTLBG7X&c=yMxcnRW4uoXhPnTP-JQZ9hNzATphBTFwycJCa2za5bvsgd47GglJmY81GTpgCRWoOKNJmGjV67R6OZVXrMarQWpfae3i1fKyX9fVx8yVw4hSroYXM9ycQQwFIVfzCM-3wDYX7NTd-wHtr271IkOlv7__4OuV-gl_OMk1zIwu6Xopn5AF5uDTP6NekbCXph2VHjgzO-dyVtZxTQg2ImnW9xrp8CrJz3PscvC8QTCMhyMR6iPd2TSDPXnMrY1gSKz1S2nHzIgwWgB2aBn5Weq5pvRq6Vk9ctiLy2ZC6FXRd4JFuv2DKYAJsd815kSBp6A4gAB-ggbmMbnsmyLYcATRGwLFdLzrsKJlh4Ds_p3RXBUKW9EA30kSQoy-j5wqRhk2QkPgQPrCRTGhIivKhCw8_jYiPjJR7em1o58dvOmHI3Vhocv4jMYMmTbzLG2eCdOdIsVYsOqoxXtxBCgTHybsH1EA7iIkafnUrRVkqreA2TD7xbagwTxzG2CcgURwKXrskP7pH1s1IafMxzM9znw7BRuSbGfvn1omEk_HKDZ2ELnKJUAvKrNJE3H7HwjKMcR7AiK5yXoQdsIt-53_OVUV5TPB_jmUPOtd3N1Q1f_H3mu9L5c5aEm_ty0pE_x8sAjSx8pPsr7XVDlyYsqfj6kDv1xQtIXP9n3NvaHwhbYqyH--iJEZkkADR1sfiCY3qqq7oQ0-PTy4X-24iX-zByG5h0YdBWBk0BEfBFkYWv3-2Gk_vZoQDi0VwWu-YUEDcEjmO4z9dxvfeIrM_V15xoof9rPjQOifOoGiq3XFBMm34xq2h7XQBMyG-pAuaDDHr88KwuTk0qVZX7be-0uT7cyiBp46Sw-8xBDuqT25WoPuqkFHxRObGL_zYz8HuQ7kRGCDb2drl11rXsNK5UsJUFv3swWT0k__IKmXqkr04TBJLN3Qw0-WG1MO8d&r=6277322303372387739
  • http://{BLOCKED}ob.net/u/?a=FjSwKVv6dHsiX9Cu__cP-WEiqRxak521xmHXwBf9S24m0MR59KMFx5v844tczW5zv2BDrvBop4k-zlUvIowd2yY-wkX7TPOnUWfG_ixQyi1RROSmJEQgd1Fz1N19_krNS0E-Q8duCDFOa0kefkd2JI8hGUJuo3Mqtv6zDT9Yjsd5NT-WhvwkmumHZosY7C7q2UeJbhoUzgpVbTl8BB9K9Tg2oZYqkVmhTgUj1CQbbsFdJIhYQ-7cNFs1Ama0wh-oJYNX0PUTTK5F1Q8qOVQfBg19L0ahnu9SAzrS5jEKBPkL21K3iPd1CB3ARAu57LhBNrmRzlLDs8HRKXkm-QBl7GKc_C9qO6A2Z6mViW31MMBp55G5UuVR4IKAw12OdnZCjS25KvmRhLd0vykogHzeXyr3KGta8I1kq4_4OWQgn1rU6ul5DiihXIDmpHLRQAoUdOcik6Omw_5eAXZLNBJwLgLtNIF39jDYlE7cn4v3-0bteqlWCsvH_yw02uipjio1TozHTXEJTD0xSwuPufgy4KVVOddzBttxniv9FHuzqW0fVBWiU7dDSbFm_cPC6iYwoJQ-RTlOaN_xppHrHww7xu4gS62Cy89jsnaZAGJdIRiUHRvTap3i85Iozrw9JaYIxd3bgzSjoE-i-ld1-MXI9HZzXczf0QP6lOgqsvrVQKLhcIF639-iR-XdTi5DWeXN9r9rsVssxj2SOdIM2Py_NZqfW5_lFJ9S8UOr-1xnI4Xkpe_E39oocy1dmJkJ1igjC9-xbJvXPiYTse5xIs31YSzfZZmu6opkqRLO_zSb5jep51JjAfLupIjyH9_1ATHi0u6zXO2JxIM4269A2meubToum7zbYcdS0OOsz9j0PyeVD3WEbki59gTgC8Aay00jhJQihdbGHG4C_joS7dIKYGdOVnTsApn-JIf-qWBnzNOwNl2mqYPSkrI51mstRcamTHQ8uDwTORi8IZWd5nSukk03QiGF8g6eK-&c=WkuHQbfWKRpoHrN2d49ecEirm3KVtsDaJvoI95Dw3PhRMBbNAPdCSXlmMJ8b4cXIGjy6K5Wu1Qtk0iMMp5PY0L7wNOQVbDDprcmYFL1e1FdPtU8ppmefOw1Rf9ECW-tJtZ3r0toWypkZ3ZrT8w9nV5TqksmbEZ8VxgYdGt7iVExzf0XobvwLGbzmpYxp_kctg1I53o-5gNi6L3EBXqeQK2dzNsD0Du4s2L3_S0tG7N4Q2OzLUokJBxJV8zIwR2WH2cUcxWWFKWXFf1pR0XoosNWuPuGk7LJrySWyGa4h_SP05MTLvPO_Awx3xLvkTDxOinVrhIxYUTqxMOYj1g8c07xAqZwv065jAaySUX6H_u5ocQN7n8NpSPLjARTBop2Xlsu4Rer7xXDnwBfD2hLUdOP15g_0hNuOYq3zs7GqY6xmUhN6WCAajkNUHY4Oe6VZbLZ0GXfLsPoDZYfIsM4oMy5zwZV9SLHTREQ2APBdXJKjsS0sP9ZltfPDsP5stwyWhaK-Kbs1ZARpsmHv-HoLTd1sIz6yskdHOux-BB91DMVxeyodNa3Ewn0N8DwUHLSruwgj7A_QVYJXM9jkL3k6aoNEQYUwHBcFua60d_4abJbbPe3bX1dT3uZhQCp8sAiY6MDytM7upgWe160kkBYnghzTQb4wIBoR13fBpBlHMSSUDgaxXqkyaDB_APiFgCvT1c7Y1Fk7UqA3xDR7uowFoPFpavzJQEYLR7E8003JefIvM_XGF6DBL5SzX7FXTPwKYUqeo63gXMZgEpBaA6vw2d2XSVbzCQYgVe53OQhFLZ2jFf0YD94SFCHao0IIi21Aqw4CBzQioODPR0uTBrqJiAnX9ZCcbxMI5c1BmKsw-MgFpTF6PxGfdLxdxDu3vjGk1b82t0mpXNyCJlx_iGfU866S0ggUCht818bAq05DdKyxBUmcHdt7J0&r=3728658154071684509
  • http://{BLOCKED}i.{BLOCKED}temhost.net/t/i/osc?sid=331002584-US-244&dt=1517545841&gid=83195246-F39B-4EA2-ADF5-EC3521958BFD&mi=ba77811f427d63a74658c42ee94c46d95749d2d8&tz=-8&ln=1&lc=0&bis=0&bief=0&biefx=0&bif=0&crg=0&os=6.1&f=4187229708

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.916.16

SSAPI PATTERN Date:

02 Feb 2018

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Deleting Scheduled Tasks

For Windows 2000, Windows XP, and Windows Server 2003:

  1. Open the Windows Scheduled Tasks. Click Start>Programs>Accessories>
    System Tools>Scheduled Tasks.
  2. Locate each task that has the following value in the Schedule column:
    • One System Care Monitor
    • One System Care Run Delay
    • One System Care Task
    • One System CarePeriod
  3. Right-click on the said file(s) with the aforementioned value.
  4. Click on Properties. In the Run field, check for the following string:
    Cmd /c /rd /s /q C:
  5. If the said string is found, delete the task.

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

  1. Open the Windows Task Scheduler. To do this:
    • On Windows Vista, Windows 7, and Windows Server 2008, click Start, type taskschd.msc in the Search input field, then press Enter.
    • On Windows 8, Windows 8.1, and Windows Server 2012, right-click on the lower left corner of the screen, click Run, type taskschd.msc, then press Enter.
  2. In the left panel, click Task Scheduler Library.
  3. In the upper-middle panel, locate each task that has the value in the Triggers column:
    • One System Care Monitor
    • One System Care Run Delay
    • One System Care Task
    • One System CarePeriod
  4. In the lower-middle panel, click the Actions tab. In the Details column, check for the following string:
    Cmd /c /rd /s /q C:
  5. If the said string is found, delete the task..

Step 4

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\One System Care\One System Care on the Web.url
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\One System Care\Launch One System Care.lnk
  • %All Users Profile%\d1051927-4923-1\BIT3715.tmp
  • %All Users Profile%\d1051927-4923-1\d1051927-4923-1.d
  • %All Users Profile%\d1051927-4d51-0\BIT3FE3.tmp
  • %All Users Profile%\d1051927-4d51-0\d1051927-4d51-0.d
  • %Application Data%\One System Care\Languages\English.xml
  • %Application Data%\One System Care\Languages\Swedish.xml
  • %Application Data%\One System Care\Languages\French.xml
  • %Application Data%\One System Care\Languages\German.xml
  • %Application Data%\One System Care\Languages\Danish.xml
  • %Application Data%\One System Care\Languages\Italian.xml
  • %Application Data%\One System Care\Languages\Dutch.xml
  • %Application Data%\One System Care\Languages\Norwegian.xml
  • %Application Data%\One System Care\Languages\Spanish.xml
  • %Application Data%\One System Care\Languages\Portuguese.xml
  • %Application Data%\One System Care\Languages\Parameters.xml
  • %Program Files%\OneSystemCare\CleanupConsole.exe
  • %Program Files%\OneSystemCare\OSCShellExtension.dll
  • %Program Files%\OneSystemCare\SystemConsole.exe
  • %Program Files%\OneSystemCare\SystemCash.exe
  • %Program Files%\OneSystemCare\uninstall.bmp
  • %Program Files%\OneSystemCare\cancel.bmp
  • %Program Files%\OneSystemCare\icon.ico
  • %Program Files%\OneSystemCare\Uninstaller.exe
  • %Program Files%\OneSystemCare\OneSystemCare.exe
  • %Program Files%\OneSystemCare\OneSystemCare.ini
  • %System Root%\Users\Public\Desktop\Launch One System Care.lnk
  • %Windows%\Tasks\One System CarePeriod.job

Step 5

Scan your computer with your Trend Micro product to delete files detected as PUA_ONESYSTEMCARE.GA. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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