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Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2022, 04:31

General

  • Target

    Trojan-Ransom.Win32.Blocker.exe

  • Size

    802KB

  • MD5

    2558f8a8234fc3e4db65a9c412d437b7

  • SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

  • SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

  • SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • SSDEEP

    1536:+EfFNvtgmAl7z5dKY6yuJPW8K43w9NXOM1aRl/i6JWT0S9yXnBibnouy8gHn2JX:+YLmGO4W849NXO9RlK6gOxiDouto2N

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 14 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
  • UPX packed file 12 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 15 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 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 Control Panel 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 63 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 24 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Users\Admin\E696D64614\winlogon.exe
        "C:\Users\Admin\E696D64614\winlogon.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Sets file execution options in registry
        • Windows security modification
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:1688
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:872 CREDAT:275457 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:776

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    2KB

    MD5

    0774dce1dca53ce5c4f06846dc34a01a

    SHA1

    b66a92ae7ae2abc81921ed83fea0886c908b14b3

    SHA256

    653df1e7ee6eb78011d131d41eebad55a6b11e14073ac204587960c404d2300f

    SHA512

    43582562e20238142d801d97dee6efff1213d38506dc8e21001517d799e52c5157a0ce814e29045fb267200878e964f04d05bb209ac738d510b48ebd689b82e2

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\572BF21E454637C9F000BE1AF9B1E1A9

    Filesize

    506B

    MD5

    22db3443f221b086f840218d225f2022

    SHA1

    4a35ee8d995bbcc83574c40a903b1bab8b423971

    SHA256

    95e922c6c42410618d5e661acc9baba97b7859948445875faa0d200fd7f84a28

    SHA512

    80107909b1f4df9fa517e24e6be032180641bf7ace8649ccf76368361e8238b630aa796c8fdf92637250d1ad59d54c78221b1a539e9ddfa1c48260b8b7a94c77

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    1KB

    MD5

    be2b5211e42eb9225d21358e7eb3f78f

    SHA1

    35b1ab3adde0a5f3cad8862897f1ea7a86946349

    SHA256

    3185aa19aba785efc822b72e3f2959e07343c1935f8f2b46a4438060763c9111

    SHA512

    9b20c8dceb160aad20de302c2589b86fae64f7842b370812fd8baba3e8154a357c0a1c282ea95fbc5406ab093593637929edaf83c42e19c7b6a011d286b06b6a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C67047FE238D580B731A13BEA5F7481F

    Filesize

    472B

    MD5

    348f6c5d513404b3c3c6c27f3de2dfdf

    SHA1

    acb18df838bf8ddb2667e944a82b2930bdecfad8

    SHA256

    a46606d9bc72c7330fff6849e1caa6c773c79d66236549408380362d28d892a1

    SHA512

    79dd389bc9a05312290bf69386faa56fd5a6515a0efd7685249831732f6a7c948ac41f288e038a65929e1b56f8fc615db12b7d3955a5e3279ebc8895fd150cab

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    488B

    MD5

    c368202c3a3d17a888d4f172ba2244ea

    SHA1

    5bbf51fe9cbbdde4a3f4d65424b273838f8fae32

    SHA256

    af2c1ed3e2c4cac788addd3c2c36c222dee6796b8ab78bc4da99794ce2557621

    SHA512

    3bebcb9e81dfa0c195abcb5541f0d4186c58e7c02b3c5ca65d153bfafd990d2f8b5c1446aa880871cbcaf65f4d40ba160d62ea35ce624e449e75fac9daed39cf

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\572BF21E454637C9F000BE1AF9B1E1A9

    Filesize

    248B

    MD5

    439eff470a1707e99b59c1316546979c

    SHA1

    256b578d9f686f9ac0a0ad9ec5dad2af3deea5ca

    SHA256

    27cb58fca6408d8388148f9dfb0bdad616b90d611fc02f954f0e618b68083c86

    SHA512

    0cd67e02b1859a0521d24a03c72cd236bc20b8d46a59226c6208e2192e7cdd4a33ced90304ddfc7a6681af1a57b408107e966749378f39a59554245364cd30f8

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    340B

    MD5

    f5219ee5354e700b856b55ee533f45d9

    SHA1

    e37b9318c51fc50f586b1e8b0c727aed8f765ba7

    SHA256

    5638c31b5eea8280a86f4bd72065df8c228009c61fb58659d8523d62c19adaf4

    SHA512

    bbb6836f0d9bb8731b1fc9cbc07d81297817530862b6ed0263c99f5a3a7a0ce119362c9041f43b63a6187476ca77401a3f0d74d3691fcfa216c4ced6340381db

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    482B

    MD5

    3a872cb8d765d30c06d3cb17aa3c4405

    SHA1

    b068c800eba92efb7cdc496aff6deb98abf66c72

    SHA256

    9c18272af72a24cdbf6dc22112313c6569b3c6817d5ac61d621a7b40e6914cbb

    SHA512

    fcab9ac7916b644472dd3a11ed410917df1954c238545204a49c3d4ae1c9818e8cc16f42fc8207eec93e96711b5f2d6396d44666d42ae5f3e7409d2bce70f1b1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C67047FE238D580B731A13BEA5F7481F

    Filesize

    480B

    MD5

    86a8257da7df8c5036b3e2da576acec9

    SHA1

    ef1a3b16818c129e232b68f5dff345f27bceba5c

    SHA256

    81b2b0b3029ecee398a49624cce0f945c9d744d45ea84b6c7f1f35566d4bcc3c

    SHA512

    293b2231af8728c68fd39e405a43eaf741b97f8a4b671e49c4b34eb51ac11c65d7344a620eceab2c81be8a5d2b92d4880a11413eeecf69cf28815255936c5b1f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\A8H0SAW1.txt

    Filesize

    608B

    MD5

    2e42ea0b4491253c264a3fa324aac16a

    SHA1

    87201a8d2e135af3a615c05999f38e317d468b3d

    SHA256

    eb4284241fa925f601831b5327d6181ce077bc20ae7158f8a454f5e8e84f69f3

    SHA512

    423ccfc9ea29131b62c10101f93613838fda703083871cd34f5e2cbbbc59149e97a1abe6c07e9c48d999f409c39cb7d9ecbd0e0ffa878e3f7195a2d696e5bd65

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\N5WGNVPZ.txt

    Filesize

    96B

    MD5

    68869cf24d66b7c9c8110b2f063ec0e5

    SHA1

    fa2e25642c176a06618dd5dd84b2f43b343bacf2

    SHA256

    d5600b5e0d69f2a3ac8993a1ea210de89d22130c9e9aa0213fdcc82e19289983

    SHA512

    2e7c936e2e445102566132132e98001efb42a400b2b99d1342ee9a2a0368b11855494b675052f71fe20d7887e6ca61a9a37e8f8dee181722883b9725cedd7eea

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    802KB

    MD5

    2558f8a8234fc3e4db65a9c412d437b7

    SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

    SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

    SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    802KB

    MD5

    2558f8a8234fc3e4db65a9c412d437b7

    SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

    SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

    SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    802KB

    MD5

    2558f8a8234fc3e4db65a9c412d437b7

    SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

    SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

    SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    802KB

    MD5

    2558f8a8234fc3e4db65a9c412d437b7

    SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

    SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

    SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    802KB

    MD5

    2558f8a8234fc3e4db65a9c412d437b7

    SHA1

    972875b6ed00a202e0bb525cd5a9e6a7bef27322

    SHA256

    eb6d8fc63554f3f02119dcf03ba021451f9ee21c63c8075111299709ac144d6b

    SHA512

    a764bf045386a3f4ad10160714db7f8a7be227bf88a54e33da09e43cb1200c18898376b4f71a1499214c43492ff0c15c072d28452e1b261275631d78e6fa42ab

  • memory/536-56-0x0000000075B11000-0x0000000075B13000-memory.dmp

    Filesize

    8KB

  • memory/536-61-0x0000000000400000-0x0000000000447000-memory.dmp

    Filesize

    284KB

  • memory/1688-71-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1688-67-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1688-76-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1688-86-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1688-72-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/1708-66-0x0000000000400000-0x0000000000447000-memory.dmp

    Filesize

    284KB