Analysis Overview
SHA256
d38d7ef94c6aa9881ad8660eb9d1db12998842f7e264539fbbac460dc78d1153
Threat Level: Known bad
The file 635befd490efbdf382649cee2c68101e_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Modifies WinLogon for persistence
Checks BIOS information in registry
Adds Run key to start application
Suspicious use of SetThreadContext
Program crash
Unsigned PE
Enumerates system info in registry
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-22 13:30
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-22 13:30
Reported
2024-07-22 13:39
Platform
win7-20240708-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2884 set thread context of 2868 | N/A | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe |
| PID 2868 set thread context of 2656 | N/A | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | C:\Windows\SysWOW64\explorer.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe"
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 252
Network
Files
memory/2868-0-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-2-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-19-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-18-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2868-12-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-10-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-8-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-6-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-14-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-4-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-22-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-20-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-23-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2868-24-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2656-28-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2656-37-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2656-32-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2656-40-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2868-38-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2656-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-22 13:30
Reported
2024-07-22 13:40
Platform
win10v2004-20240709-en
Max time kernel
150s
Max time network
151s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 916 set thread context of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe |
| PID 2312 set thread context of 2708 | N/A | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2708 set thread context of 852 | N/A | C:\Windows\SysWOW64\explorer.exe | C:\Windows\SysWOW64\explorer.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\635befd490efbdf382649cee2c68101e_JaffaCakes118.exe"
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 852 -ip 852
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.53.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 93.65.42.20.in-addr.arpa | udp |
Files
memory/2312-0-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2312-1-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2312-2-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2312-3-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2312-5-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2312-4-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2708-9-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2312-10-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2708-13-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2708-12-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2708-11-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2708-16-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2708-19-0x0000000000400000-0x00000000004B7000-memory.dmp