Analysis Overview
SHA256
b3a9abdc95546324e5c97b29401fc2623f030799dcfb6ec46d8e62970ec36c6c
Threat Level: Known bad
The file 09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Windows security bypass
Darkcomet
Modifies security service
Darkcomet family
Disables Task Manager via registry modification
Checks computer location settings
Executes dropped EXE
UPX packed file
Loads dropped DLL
Windows security modification
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
System policy modification
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-20 22:46
Signatures
Darkcomet family
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-20 22:46
Reported
2024-06-20 22:49
Platform
win7-20240508-en
Max time kernel
149s
Max time network
118s
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Disables Task Manager via registry modification
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2176 set thread context of 2608 | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe"
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
Files
memory/1304-0-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1304-1-0x0000000000260000-0x0000000000261000-memory.dmp
\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | 09eb557b04c1816b27f2e7b77aa49c04 |
| SHA1 | 9d15567404b0bfd2d2cb7c8125d8ecacd4597de9 |
| SHA256 | b3a9abdc95546324e5c97b29401fc2623f030799dcfb6ec46d8e62970ec36c6c |
| SHA512 | 18c7e4730d51c55fd51a3d089db7914079743fec4999d03d13f5163093eb18b214fb1e9f68ee83b5a336412f2399ee4d4a8632c726ba003587b6d700d95f913d |
memory/1304-12-0x0000000003810000-0x00000000038F5000-memory.dmp
memory/1304-13-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/2176-15-0x0000000000270000-0x0000000000271000-memory.dmp
memory/2176-14-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/2176-18-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/2608-17-0x0000000000400000-0x00000000004E5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-20 22:46
Reported
2024-06-20 22:49
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
149s
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Disables Task Manager via registry modification
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3028 set thread context of 3772 | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\09eb557b04c1816b27f2e7b77aa49c04_JaffaCakes118.exe"
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
| US | 8.8.8.8:53 | xzfamouzzx.no-ip.biz | udp |
Files
memory/5116-0-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/5116-1-0x00000000024E0000-0x00000000024E1000-memory.dmp
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | 09eb557b04c1816b27f2e7b77aa49c04 |
| SHA1 | 9d15567404b0bfd2d2cb7c8125d8ecacd4597de9 |
| SHA256 | b3a9abdc95546324e5c97b29401fc2623f030799dcfb6ec46d8e62970ec36c6c |
| SHA512 | 18c7e4730d51c55fd51a3d089db7914079743fec4999d03d13f5163093eb18b214fb1e9f68ee83b5a336412f2399ee4d4a8632c726ba003587b6d700d95f913d |
memory/3028-15-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/5116-14-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/3028-16-0x00000000023F0000-0x00000000023F1000-memory.dmp
memory/3028-18-0x0000000000400000-0x00000000004E5000-memory.dmp