Analysis Overview
SHA256
36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95
Threat Level: Known bad
The file 36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95 was found to be: Known bad.
Malicious Activity Summary
CryptBot
Deletes itself
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Checks processor information in registry
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-02-12 08:41
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2022-02-12 08:41
Reported
2022-02-12 08:44
Platform
win10v2004-en-20220113
Max time kernel
63s
Max time network
176s
Command Line
Signatures
CryptBot
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\ReportingEvents.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\Logs\CBS\CBS.log | C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe | N/A |
| File opened for modification | C:\Windows\WinSxS\pending.xml | C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.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 |
Suspicious use of AdjustPrivilegeToken
Processes
C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe
"C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe"
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
Network
| Country | Destination | Domain | Proto |
| NL | 104.110.191.133:80 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
| US | 8.8.8.8:53 | tishun65.top | udp |
Files
memory/2328-131-0x00000172E3740000-0x00000172E3750000-memory.dmp
memory/2328-130-0x00000172E3520000-0x00000172E3530000-memory.dmp
memory/2328-132-0x00000172E5C30000-0x00000172E5C34000-memory.dmp
memory/1464-133-0x0000000000438000-0x000000000043A000-memory.dmp
memory/1464-134-0x0000000000BC0000-0x0000000000BC1000-memory.dmp
memory/1464-135-0x0000000002A00000-0x0000000002A48000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2022-02-12 08:41
Reported
2022-02-12 08:45
Platform
win7-en-20211208
Max time kernel
119s
Max time network
146s
Command Line
Signatures
CryptBot
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe
"C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\vwGDQcpfcWjmo & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe"
C:\Windows\SysWOW64\timeout.exe
timeout 4
Network
Files
memory/944-56-0x0000000074EC1000-0x0000000074EC3000-memory.dmp
memory/944-57-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/944-55-0x0000000000438000-0x000000000043A000-memory.dmp
memory/944-58-0x0000000000C50000-0x0000000000C98000-memory.dmp