Analysis
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max time kernel
153s -
max time network
127s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
15-02-2022 19:52
Static task
static1
Behavioral task
behavioral1
Sample
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.dll
Resource
win10v2004-en-20220113
General
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Target
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.dll
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Size
190KB
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MD5
b1df6d854a85cc516b17c297e52961c7
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SHA1
b63cca38c6d715f7614f4bce1dcca60585e90731
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SHA256
a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793
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SHA512
472f4370e311b56db229f212f122dd925294462f5d265eed4f711fcc2e2058ca47caa031010732c3156326ee29b2d0e41d7154b389d8b345ce0f0b05db6fc05e
Malware Config
Extracted
C:\readme.txt
conti
http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/
https://contirecovery.click
Signatures
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Conti Ransomware
Ransomware generally thought to be a successor to Ryuk.
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Drops desktop.ini file(s) 10 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files (x86)\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Chess\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Hearts\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Purble Place\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Solitaire\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\SpiderSolitaire\desktop.ini regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File opened for modification C:\Users\Public\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\FreeCell\desktop.ini regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Mahjong\desktop.ini regsvr32.exe -
Drops file in Program Files directory 64 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Program Files\DVD Maker\sonicsptransform.ax regsvr32.exe File opened for modification C:\Program Files\Mozilla Firefox\firefox.VisualElementsManifest.xml regsvr32.exe File created C:\Program Files (x86)\Mozilla Maintenance Service\readme.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\fy.txt regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Shared\Parity.fx regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Elemental.thmx regsvr32.exe File opened for modification C:\Program Files\RepairConnect.kix regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ba.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\sk.txt regsvr32.exe File opened for modification C:\Program Files\Microsoft Games\Hearts\HeartsMCE.png regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Austin.thmx regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\io.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ko.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\si.txt regsvr32.exe File opened for modification C:\Program Files\Internet Explorer\SIGNUP\install.ins regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Equity.thmx regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Grid.thmx regsvr32.exe File opened for modification C:\Program Files\ExpandClose.vssx regsvr32.exe File opened for modification C:\Program Files\DVD Maker\directshowtap.ax regsvr32.exe File created C:\Program Files\Reference Assemblies\readme.txt regsvr32.exe File created C:\Program Files (x86)\MSBuild\readme.txt regsvr32.exe File created C:\Program Files\DVD Maker\ja-JP\readme.txt regsvr32.exe File opened for modification C:\Program Files\VideoLAN\VLC\readme.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ru.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\Adobe AIR\readme.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\7zCon.sfx regsvr32.exe File opened for modification C:\Program Files\Mozilla Firefox\dependentlibs.list regsvr32.exe File opened for modification C:\Program Files\Mozilla Firefox\platform.ini regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ga.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\hy.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ne.txt regsvr32.exe File created C:\Program Files\DVD Maker\readme.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\cy.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ku.txt regsvr32.exe File created C:\Program Files\Microsoft Games\FreeCell\readme.txt regsvr32.exe File created C:\Program Files (x86)\Common Files\DESIGNER\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Civic.thmx regsvr32.exe File created C:\Program Files (x86)\Google\CrashReports\readme.txt regsvr32.exe File opened for modification C:\Program Files\InvokeInitialize.mpv2 regsvr32.exe File opened for modification C:\Program Files\DVD Maker\offset.ax regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\ast.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\zh-cn.txt regsvr32.exe File opened for modification C:\Program Files\Internet Explorer\images\bing.ico regsvr32.exe File created C:\Program Files (x86)\Common Files\System\readme.txt regsvr32.exe File created C:\Program Files\Microsoft Games\readme.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\hr.txt regsvr32.exe File created C:\Program Files (x86)\Microsoft Office\CLIPART\readme.txt regsvr32.exe File opened for modification C:\Program Files\DVD Maker\Eurosti.TTF regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\lt.txt regsvr32.exe File created C:\Program Files\DVD Maker\fr-FR\readme.txt regsvr32.exe File created C:\Program Files\Internet Explorer\images\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Foundry.thmx regsvr32.exe File opened for modification C:\Program Files\7-Zip\License.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\pl.txt regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\uz.txt regsvr32.exe File opened for modification C:\Program Files\Mozilla Firefox\browser\omni.ja regsvr32.exe File created C:\Program Files (x86)\Common Files\Services\readme.txt regsvr32.exe File opened for modification C:\Program Files\ResumeConvert.pcx regsvr32.exe File opened for modification C:\Program Files\7-Zip\Lang\mr.txt regsvr32.exe File created C:\Program Files\Internet Explorer\de-DE\readme.txt regsvr32.exe File created C:\Program Files (x86)\Internet Explorer\es-ES\readme.txt regsvr32.exe File opened for modification C:\Program Files\desktop.ini regsvr32.exe File created C:\Program Files\7-Zip\Lang\readme.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\ReadMe.htm regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exepid process 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe 1456 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe PID 1620 wrote to memory of 1456 1620 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\a47d7ff36064cab056d56dca4c466b4e98b331e4aed1d7aee2790cb9a94b1793.dll2⤵
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:1456