Overview
overview
10Static
static
2b3518937f...bf.dll
windows7_x64
102b3518937f...bf.dll
windows10_x64
104ea8b8c37c...97.dll
windows7_x64
104ea8b8c37c...97.dll
windows10_x64
107c1b18932f...73.dll
windows7_x64
107c1b18932f...73.dll
windows10_x64
10f3c3e2cbed...c8.dll
windows7_x64
10f3c3e2cbed...c8.dll
windows10_x64
10Analysis
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max time kernel
110s -
max time network
126s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
08-11-2021 07:01
Static task
static1
Behavioral task
behavioral1
Sample
2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf.dll
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf.dll
Resource
win10-en-20211104
Behavioral task
behavioral3
Sample
4ea8b8c37cfb02ccdba95fe91c12fb68a2b7174fdcbee7ddaadded8ceb0fdf97.dll
Resource
win7-en-20211014
Behavioral task
behavioral4
Sample
4ea8b8c37cfb02ccdba95fe91c12fb68a2b7174fdcbee7ddaadded8ceb0fdf97.dll
Resource
win10-en-20211104
Behavioral task
behavioral5
Sample
7c1b18932f622126441802f5ccaa9eefb88465d83a4a527d2c7ca2bab404b373.dll
Resource
win7-en-20211014
Behavioral task
behavioral6
Sample
7c1b18932f622126441802f5ccaa9eefb88465d83a4a527d2c7ca2bab404b373.dll
Resource
win10-en-20211104
Behavioral task
behavioral7
Sample
f3c3e2cbedafd594b40efe12ae2a638489a7065dc2e1657524877fe0bd15d6c8.dll
Resource
win7-en-20211104
Behavioral task
behavioral8
Sample
f3c3e2cbedafd594b40efe12ae2a638489a7065dc2e1657524877fe0bd15d6c8.dll
Resource
win10-en-20211014
General
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Target
2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf.dll
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Size
487KB
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MD5
81bc3a2409991325c6e71a06f6b7b881
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SHA1
38c88de0ece0451b0665f3616c02c2bad77a92a2
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SHA256
2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf
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SHA512
eb9a1a865367d97cd17e21d13f3a171f005a927cf3c805c6d9cdb5c6cb39c06a1287e60bc2d98910932d27dd184f42738ecd30f1ec99d10646aed6f2cf76de61
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6c230cc22150f7ff
https://mazedecrypt.top/6c230cc22150f7ff
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ConvertMeasure.png => C:\Users\Admin\Pictures\ConvertMeasure.png.QfEe regsvr32.exe File renamed C:\Users\Admin\Pictures\NewMerge.png => C:\Users\Admin\Pictures\NewMerge.png.jOeWl regsvr32.exe -
Drops startup file 4 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6c230cc22150f7ff.tmp regsvr32.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6c230cc22150f7ff.tmp regsvr32.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt regsvr32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\111.bmp" regsvr32.exe -
Drops file in Program Files directory 20 IoCs
description ioc Process File opened for modification C:\Program Files\UnlockShow.rm regsvr32.exe File created C:\Program Files\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\EnableUninstall.mpa regsvr32.exe File opened for modification C:\Program Files\GrantGroup.html regsvr32.exe File opened for modification C:\Program Files\MeasureOpen.ex_ regsvr32.exe File opened for modification C:\Program Files\MergeInitialize.htm regsvr32.exe File opened for modification C:\Program Files\PushCompare.wvx regsvr32.exe File opened for modification C:\Program Files\SwitchSet.ocx regsvr32.exe File opened for modification C:\Program Files (x86)\6c230cc22150f7ff.tmp regsvr32.exe File opened for modification C:\Program Files\EditSuspend.wmv regsvr32.exe File opened for modification C:\Program Files\SuspendExit.mht regsvr32.exe File opened for modification C:\Program Files\SwitchSend.tif regsvr32.exe File opened for modification C:\Program Files\UninstallResize.wdp regsvr32.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\6c230cc22150f7ff.tmp regsvr32.exe File opened for modification C:\Program Files\OutUse.vsdm regsvr32.exe File opened for modification C:\Program Files\ResetUninstall.search-ms regsvr32.exe File opened for modification C:\Program Files\TestProtect.m1v regsvr32.exe File opened for modification C:\Program Files\ConvertEdit.xlsb regsvr32.exe File opened for modification C:\Program Files\GrantRestart.jpe regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2888 regsvr32.exe 2888 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeBackupPrivilege 300 vssvc.exe Token: SeRestorePrivilege 300 vssvc.exe Token: SeAuditPrivilege 300 vssvc.exe Token: SeIncreaseQuotaPrivilege 2428 wmic.exe Token: SeSecurityPrivilege 2428 wmic.exe Token: SeTakeOwnershipPrivilege 2428 wmic.exe Token: SeLoadDriverPrivilege 2428 wmic.exe Token: SeSystemProfilePrivilege 2428 wmic.exe Token: SeSystemtimePrivilege 2428 wmic.exe Token: SeProfSingleProcessPrivilege 2428 wmic.exe Token: SeIncBasePriorityPrivilege 2428 wmic.exe Token: SeCreatePagefilePrivilege 2428 wmic.exe Token: SeBackupPrivilege 2428 wmic.exe Token: SeRestorePrivilege 2428 wmic.exe Token: SeShutdownPrivilege 2428 wmic.exe Token: SeDebugPrivilege 2428 wmic.exe Token: SeSystemEnvironmentPrivilege 2428 wmic.exe Token: SeRemoteShutdownPrivilege 2428 wmic.exe Token: SeUndockPrivilege 2428 wmic.exe Token: SeManageVolumePrivilege 2428 wmic.exe Token: 33 2428 wmic.exe Token: 34 2428 wmic.exe Token: 35 2428 wmic.exe Token: 36 2428 wmic.exe Token: SeIncreaseQuotaPrivilege 2428 wmic.exe Token: SeSecurityPrivilege 2428 wmic.exe Token: SeTakeOwnershipPrivilege 2428 wmic.exe Token: SeLoadDriverPrivilege 2428 wmic.exe Token: SeSystemProfilePrivilege 2428 wmic.exe Token: SeSystemtimePrivilege 2428 wmic.exe Token: SeProfSingleProcessPrivilege 2428 wmic.exe Token: SeIncBasePriorityPrivilege 2428 wmic.exe Token: SeCreatePagefilePrivilege 2428 wmic.exe Token: SeBackupPrivilege 2428 wmic.exe Token: SeRestorePrivilege 2428 wmic.exe Token: SeShutdownPrivilege 2428 wmic.exe Token: SeDebugPrivilege 2428 wmic.exe Token: SeSystemEnvironmentPrivilege 2428 wmic.exe Token: SeRemoteShutdownPrivilege 2428 wmic.exe Token: SeUndockPrivilege 2428 wmic.exe Token: SeManageVolumePrivilege 2428 wmic.exe Token: 33 2428 wmic.exe Token: 34 2428 wmic.exe Token: 35 2428 wmic.exe Token: 36 2428 wmic.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 3940 wrote to memory of 2888 3940 regsvr32.exe 69 PID 3940 wrote to memory of 2888 3940 regsvr32.exe 69 PID 3940 wrote to memory of 2888 3940 regsvr32.exe 69 PID 2888 wrote to memory of 2428 2888 regsvr32.exe 74 PID 2888 wrote to memory of 2428 2888 regsvr32.exe 74
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\2b3518937fd231560c7dc4f5af672a033b1c810d7f2f82c8151c025ce75775bf.dll2⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2888 -
C:\Windows\system32\wbem\wmic.exe"C:\v\dii\jjhsj\..\..\..\Windows\dktas\iel\..\..\system32\tkarf\iboa\..\..\wbem\bcu\uity\..\..\wmic.exe" shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2428
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:300