Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
11-06-2022 17:02
Static task
static1
Behavioral task
behavioral1
Sample
star.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
star.exe
Resource
win10v2004-20220414-en
General
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Target
star.exe
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Size
360KB
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MD5
2f121145ea11b36f9ade0cb8f319e40a
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SHA1
d68049989ce98f71f6a562e439f6b6f0a165f003
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SHA256
59e0ab333060b4e510db5d36d87f0fe267ab66b0881955649b06d91d6dd2d486
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SHA512
9211a74cfa23c70c6ace8bd168ecbe1bb4a06d2e03b5adff5546115137b6ce849d3e41337581123d48e5082319f507d8f2d274621317fada182530e4a0abb6c7
Malware Config
Extracted
C:\read-me.txt
globeimposter
http://mmeeiix2ejdwkmseycljetmpiwebdvgjts75c63camjofn2cjdoulzqd.onion/?STAHYJUHGFV
http://helpqvrg3cc5mvb3.onion/
Signatures
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GlobeImposter
GlobeImposter is a ransomware first seen in 2017.
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Modifies extensions of user files 11 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\CheckpointMove.crw => C:\Users\Admin\Pictures\CheckpointMove.crw.xls star.exe File renamed C:\Users\Admin\Pictures\CompressGrant.tiff => C:\Users\Admin\Pictures\CompressGrant.tiff.xls star.exe File renamed C:\Users\Admin\Pictures\RevokeSearch.tif => C:\Users\Admin\Pictures\RevokeSearch.tif.xls star.exe File opened for modification C:\Users\Admin\Pictures\UnregisterExpand.tiff star.exe File renamed C:\Users\Admin\Pictures\UnregisterExpand.tiff => C:\Users\Admin\Pictures\UnregisterExpand.tiff.xls star.exe File renamed C:\Users\Admin\Pictures\WriteRedo.tif => C:\Users\Admin\Pictures\WriteRedo.tif.xls star.exe File opened for modification C:\Users\Admin\Pictures\CompressGrant.tiff star.exe File renamed C:\Users\Admin\Pictures\ConvertResolve.raw => C:\Users\Admin\Pictures\ConvertResolve.raw.xls star.exe File renamed C:\Users\Admin\Pictures\JoinUnlock.crw => C:\Users\Admin\Pictures\JoinUnlock.crw.xls star.exe File renamed C:\Users\Admin\Pictures\RemoveSend.png => C:\Users\Admin\Pictures\RemoveSend.png.xls star.exe File renamed C:\Users\Admin\Pictures\SuspendFind.crw => C:\Users\Admin\Pictures\SuspendFind.crw.xls star.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation star.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\BrowserUpdateCheck = "C:\\Users\\Admin\\AppData\\Local\\star.exe" star.exe Key created \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce star.exe -
Drops desktop.ini file(s) 26 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini star.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini star.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini star.exe File opened for modification C:\Program Files (x86)\desktop.ini star.exe File opened for modification C:\Users\Public\Pictures\desktop.ini star.exe File opened for modification C:\Users\Public\Libraries\desktop.ini star.exe File opened for modification C:\Users\Public\Documents\desktop.ini star.exe File opened for modification C:\Users\Admin\Links\desktop.ini star.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini star.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini star.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini star.exe File opened for modification C:\Users\Admin\Documents\desktop.ini star.exe File opened for modification C:\Users\Public\Desktop\desktop.ini star.exe File opened for modification C:\Users\Admin\Videos\desktop.ini star.exe File opened for modification C:\Users\Admin\Searches\desktop.ini star.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini star.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini star.exe File opened for modification C:\Users\Admin\3D Objects\desktop.ini star.exe File opened for modification C:\Users\Public\Videos\desktop.ini star.exe File opened for modification C:\Users\Public\Music\desktop.ini star.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini star.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini star.exe File opened for modification C:\Users\Public\desktop.ini star.exe File opened for modification C:\Users\Public\Downloads\desktop.ini star.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini star.exe File opened for modification C:\Users\Admin\Music\desktop.ini star.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3232 set thread context of 4956 3232 star.exe 90 -
Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\hu-hu\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\themes\dark\file_info.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\nls\de-de\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\uk-ua\ui-strings.js star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\es-es\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\dd_arrow_small2x.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\sl-si\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Font\CourierStd-Bold.otf star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\ko-kr\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\sv-se\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_vi.dll star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\selector.js star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\root\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\de-de\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\s_close_h2x.png star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\hu-hu\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\nls\pt-br\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\nls\it-it\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_zh-TW.dll star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\ru-ru\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\Info.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\s_close2x.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\uk-ua\ui-strings.js star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\zh-tw\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\GoogleCrashHandler.exe star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\adoberfp.dll star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\js\nls\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\cs-cz\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sign-services-auth\js\nls\nb-no\read-me.txt star.exe File created C:\Program Files (x86)\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\ja-jp\ui-strings.js star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\nl-nl\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\email\dc_logo.png star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\sl-si\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\fr-fr\ui-strings.js star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\sl-si\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\it-it\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\images\nub.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\themes\dark\illustrations.png star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\email\themes\dark\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_no.dll star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\RDCNotificationClient.appx star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themeless\S_ThumbDownOutline_22_N1.svg star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\zh-tw\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\images\themes\dark\bun.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\images\themes\dark\nub.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Onix32.dll star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\ca-es\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\en-il\ui-strings.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\CompleteCheckmark2x.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\home-view\plugin.js star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\adobe_spinner.gif star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\UKRAINE.TXT star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\AddressBook.png star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\en-il\read-me.txt star.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\read-me.txt star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\CROATIAN.TXT star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themes\dark\close-2.svg star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themeless\close.svg star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\download-btn.png star.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\themes\dark\new_icons.png star.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 116 schtasks.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3232 wrote to memory of 116 3232 star.exe 88 PID 3232 wrote to memory of 116 3232 star.exe 88 PID 3232 wrote to memory of 116 3232 star.exe 88 PID 3232 wrote to memory of 4956 3232 star.exe 90 PID 3232 wrote to memory of 4956 3232 star.exe 90 PID 3232 wrote to memory of 4956 3232 star.exe 90 PID 3232 wrote to memory of 4956 3232 star.exe 90 PID 3232 wrote to memory of 4956 3232 star.exe 90 PID 3232 wrote to memory of 4956 3232 star.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\star.exe"C:\Users\Admin\AppData\Local\Temp\star.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jVYbanglCI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F5F.tmp"2⤵
- Creates scheduled task(s)
PID:116
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C:\Users\Admin\AppData\Local\Temp\star.exe"{path}"2⤵
- Modifies extensions of user files
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
PID:4956
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD54fc8eef9be6e571df6803b42f3f3f21d
SHA120011bfa76c71a014cb48c1bc886d704d146ed5d
SHA256dd2db6e98213001cef2e75787ef0650cf43a3fee98c530353b4adb0bc410c02b
SHA5128fd630c9ff98f1ac0b7a01ea70fbd5dc8f470adab385cbfc4b5bfbede62904f6f685ce2d00eebd055ab14e8fe431bf96287940562a70638a17d4431474398dba
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Filesize
360KB
MD5ba9140e388ed6520961a142169bb4697
SHA10d09ecd9937e31ebd6308fa8378d3113f7ed5cd2
SHA256a1232a02afaf8b97fece06840e62337438645a9111a812c5742ace4f87bf8a87
SHA5127c1c06bed539b56a5b9853c949601ad203e253eea2e7c08c2e30e5af1b2280f1bc62f903294645eebc83e332e1c39609c7caa7f2e8a4fdb5e81c5bcd7fa0ee1f