Resubmissions

26/03/2024, 14:35

240326-ryecksfd5y10

26/03/2024, 14:27

240326-rse2xsfb8y10

Analysis

  • max time kernel
    1774s
  • max time network
    1600s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    26/03/2024, 14:35

General

  • Target
    1f4e927f6e5ff4ae660f4d99194a9a7c05d5d829c6c3dbe1ee52a00fc740d6a4.exe
  • Size 2.2MB
  • Sample240326-ryecksfd5y
  • SHA256 1f4e927f6e5ff4ae660f4d99194a9a7c05d5d829c6c3dbe1ee52a00fc740d6a4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops file in Drivers directory 30 IoCs
  • Modifies Installed Components in the registry 2 TTPs 3 IoCs
  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 6 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies Internet Explorer settings 1 TTPs 5 IoCs
  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f4e927f6e5ff4ae660f4d99194a9a7c05d5d829c6c3dbe1ee52a00fc740d6a4.exe
    "C:\Users\Admin\AppData\Local\Temp\1f4e927f6e5ff4ae660f4d99194a9a7c05d5d829c6c3dbe1ee52a00fc740d6a4.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops startup file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:4612
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies Installed Components in the registry
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3384
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2648
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies Installed Components in the registry
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4588
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:5004
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies Installed Components in the registry
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3336
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\Dont_Worry.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1788
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2792

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Dont_Worry.txt

        • Path C:\$Recycle.Bin\Dont_Worry.txt
        • Size 738B
        • SHA256 d00e18a6aabc9c410cf6ed54974e57d13a29d30cf561e21f3f2d6155fbc2a07d
        • MD5 SHA1 SHA512

        aic_file_icons.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\themes\dark\aic_file_icons.png
        • Size 52KB
        • SHA256 7f1ae986dd082bffe615736e234c619c512757a8c288045ba38c9cf706bb148f
        • MD5 SHA1 SHA512 SSDEEP

        selection-actions2x.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\selection-actions2x.png
        • Size 5KB
        • SHA256 8f3fa83f44b69bf87dea62934c7fea19599a95ec49c92b3e8d2b4857d0ad5547
        • MD5 SHA1 SHA512 SSDEEP

        icons.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\icons.png
        • Size 9KB
        • SHA256 4cf96b1f83cc6ba7741b11ef0563c9bb2150352854cb030cb5326e6cdf7063af
        • MD5 SHA1 SHA512 SSDEEP

        icons_ie8.gif

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\icons_ie8.gif
        • Size 9KB
        • SHA256 db4c00cfdd7757fec7a7912b9b499854fcc39d773a0530a01fecaa538b7e9315
        • MD5 SHA1 SHA512 SSDEEP

        icons_retina.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\icons_retina.png
        • Size 16KB
        • SHA256 e3bc9f29a4aa3e5e0a4ef037119a80a5fcc582d87e59c41bae4a4eb826a7413a
        • MD5 SHA1 SHA512 SSDEEP

        illustrations.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\illustrations.png
        • Size 10KB
        • SHA256 6ef8b87b8d33f37d560060d347d7dbc08be6f2456e0e6bbf4a1e5278e0570969
        • MD5 SHA1 SHA512 SSDEEP

        illustrations_retina.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\illustrations_retina.png
        • Size 20KB
        • SHA256 71fca7eaecd6b224b59930195a5d0f3cf94b229721f92c9342a313e0042bcb36
        • MD5 SHA1 SHA512 SSDEEP

        new_icons.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\new_icons.png
        • Size 9KB
        • SHA256 369a54fb42ada1c0007e1ff0d9910f3ba754996096031a0bdcc70c759362de17
        • MD5 SHA1 SHA512 SSDEEP

        new_icons_retina.png

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\new_icons_retina.png
        • Size 18KB
        • SHA256 976ecdc91d86c6cb90a307dc215d085e92ee111cd4e82590a7a87e220761ea46
        • MD5 SHA1 SHA512 SSDEEP

        DisplayLanguageNames.en_GB_EURO.txt

        • Path C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\DisplayLanguageNames.en_GB_EURO.txt
        • Size 34KB
        • SHA256 b29fc5af02065642031b11c38762090871fd431fe22a717cc6c99aef63e51d5d
        • MD5 SHA1 SHA512 SSDEEP

        edbres00001.jrs

        • Path C:\ProgramData\Microsoft\Search\Data\Applications\Windows\edbres00001.jrs
        • Size 1.0MB
        • SHA256 e263d5e0d05c7bf9dd3033707c2f0e92e4d637f08051abf81a42a3d3f63f725c
        • MD5 SHA1 SHA512 SSDEEP

        {3287238D-0307-4D4B-83C4-154B458A0EB2}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{3287238D-0307-4D4B-83C4-154B458A0EB2}[email protected]
        • Size 2KB
        • SHA256 e3b7454a9861745e3cb9134836e6fb4b3a1a558bddd14870590a7c266e05a19c
        • MD5 SHA1 SHA512

        {3287238D-0307-4D4B-83C4-154B458A0EB2}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{3287238D-0307-4D4B-83C4-154B458A0EB2}[email protected]
        • Size 2KB
        • SHA256 ad2ee5621d0a7a6414d8507fe1cb7926d945344e7fd90b3b6215901a0d5de9eb
        • MD5 SHA1 SHA512

        {6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]
        • Size 281KB
        • SHA256 c11fa6ea7520c60488917cfed4f66800745c1ba5a7a1e75539cd1b405faa675b
        • MD5 SHA1 SHA512 SSDEEP

        {6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]
        • Size 281KB
        • SHA256 a383bab82ebc45b3ba00d0bd2511ef393a5a12e68d38936652bf9c5e9cbab8b2
        • MD5 SHA1 SHA512 SSDEEP

        {6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{6AF0698E-D558-4F6E-9B3C-3716689AF493}[email protected]
        • Size 281KB
        • SHA256 09a3a84b6772f1ff40b4a1a7bfd92f9b174999da90fc7457ef6ff63b7cd34ebe
        • MD5 SHA1 SHA512 SSDEEP

        {DDF571F2-BE98-426D-8288-1A9A39C3FDA2}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{DDF571F2-BE98-426D-8288-1A9A39C3FDA2}[email protected]
        • Size 582KB
        • SHA256 1b60a5c537ab0c4d956a085b24e05d538f85007773ddf4a0fd431d46950143ff
        • MD5 SHA1 SHA512 SSDEEP

        {DDF571F2-BE98-426D-8288-1A9A39C3FDA2}[email protected]

        • Path C:\ProgramData\Microsoft\Windows\Caches\{DDF571F2-BE98-426D-8288-1A9A39C3FDA2}[email protected]
        • Size 582KB
        • SHA256 9a147fe0fedbf4515fb8a302f4ff65bc754b815684ef4ec8fcbda4f0c356f115
        • MD5 SHA1 SHA512 SSDEEP

        data_2

        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_2
        • Size 9KB
        • SHA256 02526e120425eae2e68aa4384f5a10f625d6ae977df1de154d0701d21404eacc
        • MD5 SHA1 SHA512 SSDEEP

        data_0

        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Storage\ext\nmmhkkegccagdldgiimedpiccmgmieda\def\DawnCache\data_0
        • Size 9KB
        • SHA256 92493c5377ddf0b2abccd2e5a3f4d373ea496170d17e419f845fb3fa0d5d9152
        • MD5 SHA1 SHA512 SSDEEP

        data_1

        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Storage\ext\nmmhkkegccagdldgiimedpiccmgmieda\def\DawnCache\data_1
        • Size 265KB
        • SHA256 487a630f220e470b98cdd865dd98586de74ab225038bf8aa24d37a6906314a52
        • MD5 SHA1 SHA512 SSDEEP

        data_3

        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Storage\ext\nmmhkkegccagdldgiimedpiccmgmieda\def\DawnCache\data_3
        • Size 9KB
        • SHA256 4d7626f69fa883d9cba97e3c8c290ffb2cf1a059a53b867118569114f349c7c2
        • MD5 SHA1 SHA512 SSDEEP

        {3DA71D5A-20CC-432F-A115-DFE92379E91F}[email protected]

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\{3DA71D5A-20CC-432F-A115-DFE92379E91F}[email protected]
        • Size 98KB
        • SHA256 a166d4372dfc8ecb21db8a4d8f44dc73c325c75159311c4e10c07efa9e5ebcdc
        • MD5 SHA1 SHA512 SSDEEP

        {3DA71D5A-20CC-432F-A115-DFE92379E91F}[email protected]

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\{3DA71D5A-20CC-432F-A115-DFE92379E91F}[email protected]
        • Size 47KB
        • SHA256 350fb730928b82202d677a6347ab9158b7851e035029b2281ef65516f203bdc2
        • MD5 SHA1 SHA512 SSDEEP

        iconcache_16.db

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_16.db
        • Size 1024KB
        • SHA256 e3a28286539c52c6033903756db5966c9abe5cfaa5409639fcf5a62a49f145d5
        • MD5 SHA1 SHA512 SSDEEP

        iconcache_idx.db

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db
        • Size 7KB
        • SHA256 33730fc5d7d988030fce5a73a02f06e39d2189727e08ca2b9bd027331bfa315a
        • MD5 SHA1 SHA512 SSDEEP

        microsoft.windows[1].xml

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Cortana_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\V33FP3AE\microsoft.windows[1].xml
        • Size 96B
        • SHA256 5ac3b7a4930cdf44e52f4a3299275ce5bf6ddaa116b279e2d9fab346bded7775
        • MD5 SHA1 SHA512

        2823318777ntouromlalnodry--naod.sqlite

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\j1lgjc9k.default-release\storage\permanent\chrome\idb\2823318777ntouromlalnodry--naod.sqlite
        • Size 49KB
        • SHA256 73b76dad52921209d3e1aee9859c9f2e3cd2c8ed31455fa85bcc22dd3dd4d3b2
        • MD5 SHA1 SHA512 SSDEEP

        SourceHash{5740BD44-B58D-321A-AFC0-6D3D4556DD6C}

        • Path C:\Windows\Installer\SourceHash{5740BD44-B58D-321A-AFC0-6D3D4556DD6C}
        • Size 21KB
        • SHA256 13963bef6b6f75e22bbcc69c628af7d81daae900af12b95018cec5a6618ef3d7
        • MD5 SHA1 SHA512 SSDEEP

        SqlPersistenceProviderLogic.sql

        • Path C:\Windows\Microsoft.NET\Framework64\v3.5\SQL\fr\SqlPersistenceProviderLogic.sql
        • Size 14KB
        • SHA256 b6f17963efbc4b8f15cd391d2c734dd248523449124b4f5970c57ce5c74ef616
        • MD5 SHA1 SHA512 SSDEEP

        SqlPersistenceProviderLogic.sql

        • Path C:\Windows\Microsoft.NET\Framework\v3.5\SQL\fr\SqlPersistenceProviderLogic.sql
        • Size 14KB
        • SHA256 92060a81436b0e49950b56c778a778b887a0a506fa1accfbd5366f60113d3e2a
        • MD5 SHA1 SHA512 SSDEEP

        microsoft.windows[1].xml

        • Path \??\c:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Cortana_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\V33FP3AE\microsoft.windows[1].xml
        • Size 1KB
        • SHA256 04d307f8daa932c365a598f721855c0fb34cec9d8873250808ec940a7565e145
        • MD5 SHA1 SHA512

        {9B8A714A-2DAA-491D-A802-58C5186EE582}.png

        • Path \??\c:\Users\Admin\AppData\Local\Temp\{9B8A714A-2DAA-491D-A802-58C5186EE582}.png
        • Size 7KB
        • SHA256 b51bdd7fd7dcf0c6c052bc3f7cbd4b60460ca996f7b06cd7c5178551a51a769b
        • MD5 SHA1 SHA512 SSDEEP

        memory/2648-7181-0x0000026095680000-0x00000260956A0000-memory.dmp

        memory/2648-7179-0x0000026095370000-0x0000026095390000-memory.dmp

        memory/2792-12172-0x0000022F02200000-0x0000022F02220000-memory.dmp

        memory/3336-12049-0x0000000002980000-0x0000000002981000-memory.dmp

        memory/3384-7173-0x00000000009E0000-0x00000000009E1000-memory.dmp

        memory/4588-9713-0x0000000002730000-0x0000000002731000-memory.dmp

        memory/4612-15439-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-18223-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-18705-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-8188-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-7283-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-6546-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-4781-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-12468-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-12708-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-3048-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-13191-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-2185-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-10237-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-11256-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16487-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16218-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16277-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16346-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16217-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-16615-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-17237-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-17981-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-954-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-18560-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/4612-18667-0x0000000000400000-0x000000000064A000-memory.dmp

        memory/5004-9730-0x000001F53B590000-0x000001F53B5B0000-memory.dmp