Analysis Overview
SHA256
284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab
Threat Level: Known bad
The file 284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab was found to be: Known bad.
Malicious Activity Summary
Maze
Deletes shadow copies
Modifies extensions of user files
Reads user/profile data of web browsers
Drops startup file
Sets desktop wallpaper using registry
Drops file in Windows directory
Drops file in Program Files directory
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-02-16 23:08
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-02-16 23:08
Reported
2022-02-16 23:13
Platform
win7-en-20211208
Max time kernel
162s
Max time network
170s
Command Line
Signatures
Maze
Deletes shadow copies
Modifies extensions of user files
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\892e099c9869a39d.tmp | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
Reads user/profile data of web browsers
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
Drops file in Program Files directory
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeIncreaseQuotaPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemtimePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeProfSingleProcessPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemEnvironmentPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeRemoteShutdownPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeUndockPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeManageVolumePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 34 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 35 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeIncreaseQuotaPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemtimePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeProfSingleProcessPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeSystemEnvironmentPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeRemoteShutdownPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeUndockPrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: SeManageVolumePrivilege | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 34 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
| Token: 35 | N/A | C:\Windows\system32\wbem\wmic.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1848 wrote to memory of 900 | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | C:\Windows\system32\wbem\wmic.exe |
| PID 1848 wrote to memory of 900 | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | C:\Windows\system32\wbem\wmic.exe |
| PID 1848 wrote to memory of 900 | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | C:\Windows\system32\wbem\wmic.exe |
| PID 1848 wrote to memory of 900 | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | C:\Windows\system32\wbem\wmic.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe
"C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\wbem\wmic.exe
"C:\weuue\..\Windows\ohxke\..\system32\gobcp\..\wbem\yqnl\ovbw\..\..\wmic.exe" shadowcopy delete
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
Network
| Country | Destination | Domain | Proto |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.11:80 | tcp | |
| RU | 91.218.114.11:80 | tcp | |
| RU | 91.218.114.11:80 | tcp | |
| RU | 91.218.114.11:80 | tcp |
Files
memory/1848-54-0x0000000000220000-0x00000000002C0000-memory.dmp
memory/1848-55-0x0000000075891000-0x0000000075893000-memory.dmp
memory/1848-56-0x0000000000400000-0x00000000004A0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-02-16 23:08
Reported
2022-02-16 23:13
Platform
win10v2004-en-20220113
Max time kernel
158s
Max time network
178s
Command Line
Signatures
Maze
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\8802099ca906eab2.tmp | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8802099ca906eab2.tmp | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
Reads user/profile data of web browsers
Drops file in Program Files directory
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SoftwareDistribution\ReportingEvents.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\WindowsUpdate.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\DataStore.edb | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm | C:\Windows\system32\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe
"C:\Users\Admin\AppData\Local\Temp\284b294160d8af073b668443204ea9f49d93f12d3ea1e030106eb43c1ae2b1ab.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
Network
| Country | Destination | Domain | Proto |
| US | 72.21.81.240:80 | tcp | |
| US | 72.21.81.240:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.4:80 | tcp | |
| RU | 91.218.114.11:80 | tcp | |
| RU | 91.218.114.11:80 | tcp | |
| RU | 91.218.114.25:80 | tcp |
Files
memory/1208-130-0x0000000000600000-0x00000000006A0000-memory.dmp
memory/1208-131-0x0000000000400000-0x00000000004A0000-memory.dmp
memory/1968-132-0x0000025B04960000-0x0000025B04970000-memory.dmp
memory/1968-133-0x0000025B04F20000-0x0000025B04F30000-memory.dmp
memory/1968-134-0x0000025B075E0000-0x0000025B075E4000-memory.dmp