Analysis
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max time kernel
161s -
max time network
182s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 01:01
Static task
static1
Behavioral task
behavioral1
Sample
cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe
Resource
win10-en-20211208
General
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Target
cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe
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Size
115KB
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MD5
fbf8e910f9480d64e8ff6ecf4b10ef4b
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SHA1
e6b32975acb2cc5230dd4f6ce6f243293fd984fa
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SHA256
cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b
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SHA512
3eccc2920d8672c1a9158bf7b72ae669dc59fe6404da0938cbc8ad0e7a27be897a42a655cadae917c45279406deaa85951d067eedb2645e06b5f77b78f57177b
Malware Config
Extracted
C:\9j2qb-readme.txt
ryuk
https://www.coveware.com/blog/2019/7/15/ransomware-amounts-rise-3x-in-q2-as-ryuk-amp-sodinokibi-spread
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/13C49342C141200E
http://decryptor.cc/13C49342C141200E
https://filehippo.com/download_tor_browser_for_windows/
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\LockResume.raw => \??\c:\users\admin\pictures\LockResume.raw.9j2qb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File renamed C:\Users\Admin\Pictures\RestartReset.tif => \??\c:\users\admin\pictures\RestartReset.tif.9j2qb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File renamed C:\Users\Admin\Pictures\RequestRestart.raw => \??\c:\users\admin\pictures\RequestRestart.raw.9j2qb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File renamed C:\Users\Admin\Pictures\UnblockRemove.tif => \??\c:\users\admin\pictures\UnblockRemove.tif.9j2qb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File renamed C:\Users\Admin\Pictures\DebugResolve.tif => \??\c:\users\admin\pictures\DebugResolve.tif.9j2qb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\I: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\K: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\W: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\X: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\G: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\H: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\F: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\M: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\N: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\P: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\T: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\U: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\B: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\E: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\D: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\V: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\Z: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\S: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\J: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\R: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\O: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\Q: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\Y: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\A: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened (read-only) \??\L: cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\j2c481n97z95e.bmp" cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe -
Drops file in Program Files directory 24 IoCs
description ioc Process File opened for modification \??\c:\program files\UnprotectResize.vb cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\GrantProtect.mpeg3 cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\PingSelect.txt cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\ConvertFromSave.mov cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\JoinResume.wps cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\OutConvert.xltx cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\WatchStart.rle cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File created \??\c:\program files (x86)\9j2qb-readme.txt cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\CheckpointSet.mpg cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\DismountStart.odp cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\ResolveOpen.mpg cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\RevokeDisable.wm cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\SaveBlock.ADT cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File created \??\c:\program files\9j2qb-readme.txt cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\ConvertFromConvertTo.mpeg cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\InstallFind.mht cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\InvokeRestore.mht cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\NewRemove.3gp cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\SkipOpen.mpg cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\UnprotectHide.ppsm cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\UnprotectSwitch.html cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\ConfirmExport.js cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\GetUndo.cr2 cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe File opened for modification \??\c:\program files\WaitAdd.wmv cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 3604 cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe"C:\Users\Admin\AppData\Local\Temp\cec23c13c52a39c8715ee2ed7878f8aa9452e609df1d469ef7f0dec55736645b.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:3604