Analysis Overview
SHA256
fc31934152ea6e5d60c4ee949140d28b2cfe30764451f0c6d62ee2945490656d
Threat Level: Known bad
The file Cjryjsra.exe was found to be: Known bad.
Malicious Activity Summary
BitRAT
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-05-10 05:40
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-10 05:40
Reported
2022-05-10 05:45
Platform
win7-20220414-en
Max time kernel
150s
Max time network
180s
Command Line
Signatures
BitRAT
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dqpbp = "\"C:\\Users\\Admin\\AppData\\Roaming\\Vaqdsknoc\\Dqpbp.exe\"" | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1840 set thread context of 1956 | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe
"C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 36
C:\Windows\SysWOW64\timeout.exe
timeout 36
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
Network
| Country | Destination | Domain | Proto |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp |
Files
memory/1840-54-0x0000000000B40000-0x0000000000E76000-memory.dmp
memory/1840-55-0x00000000751C1000-0x00000000751C3000-memory.dmp
memory/1840-56-0x0000000005BC0000-0x0000000005EE4000-memory.dmp
memory/1208-57-0x0000000000000000-mapping.dmp
memory/1172-58-0x0000000000000000-mapping.dmp
memory/1840-59-0x0000000008980000-0x0000000008B74000-memory.dmp
memory/1956-60-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-61-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-63-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-65-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-67-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-69-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-70-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-73-0x000000000068A488-mapping.dmp
memory/1956-72-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-75-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/1956-77-0x0000000000400000-0x00000000007CE000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-10 05:40
Reported
2022-05-10 05:45
Platform
win10v2004-20220414-en
Max time kernel
153s
Max time network
182s
Command Line
Signatures
BitRAT
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dqpbp = "\"C:\\Users\\Admin\\AppData\\Roaming\\Vaqdsknoc\\Dqpbp.exe\"" | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4356 set thread context of 608 | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe
"C:\Users\Admin\AppData\Local\Temp\Cjryjsra.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 36
C:\Windows\SysWOW64\timeout.exe
timeout 36
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| NL | 52.178.17.2:443 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| GB | 51.11.168.232:443 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp | |
| NL | 212.193.30.54:3680 | tcp |
Files
memory/4356-130-0x0000000000060000-0x0000000000396000-memory.dmp
memory/4356-131-0x0000000005370000-0x0000000005914000-memory.dmp
memory/4356-132-0x0000000004DC0000-0x0000000004E52000-memory.dmp
memory/4356-133-0x0000000004D60000-0x0000000004D6A000-memory.dmp
memory/1920-134-0x0000000000000000-mapping.dmp
memory/3516-135-0x0000000000000000-mapping.dmp
memory/376-136-0x0000000000000000-mapping.dmp
memory/608-137-0x0000000000000000-mapping.dmp
memory/608-138-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/608-139-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/608-140-0x0000000000400000-0x00000000007CE000-memory.dmp
memory/608-141-0x0000000000400000-0x00000000007CE000-memory.dmp