Analysis Overview
SHA256
421cc26f9fa03acda748215dd8f5d3cbb22eff317fbcfacfbb2e6e6156309429
Threat Level: Known bad
The file a9d55d08eecc9a13a7526c6757376596_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies firewall policy service
Modifies WinLogon for persistence
Darkcomet
Darkcomet family
Disables Task Manager via registry modification
Disables RegEdit via registry modification
Sets file to hidden
Checks computer location settings
UPX packed file
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Views/modifies file attributes
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-14 13:07
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 |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-14 13:07
Reported
2024-06-14 13:10
Platform
win7-20240611-en
Max time kernel
149s
Max time network
121s
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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Disables Task Manager via registry modification
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe" +s +h
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
Files
memory/2068-0-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2068-1-0x0000000000260000-0x0000000000261000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | a9d55d08eecc9a13a7526c6757376596 |
| SHA1 | d7b781ba204e4f2dbb67dbbb743fb843a7c72bab |
| SHA256 | 421cc26f9fa03acda748215dd8f5d3cbb22eff317fbcfacfbb2e6e6156309429 |
| SHA512 | 0045848210d02543d3d4516c9e20915890b74415decd53892f8d7a409de54073c1c335e3249860f9ff901adec57b0a5cb787f45a170dab295349f43daa6bf684 |
memory/2388-13-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2068-12-0x00000000044C0000-0x0000000004587000-memory.dmp
memory/2636-53-0x0000000000030000-0x0000000000031000-memory.dmp
memory/2636-15-0x0000000000080000-0x0000000000081000-memory.dmp
memory/2068-54-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-55-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-56-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-57-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-58-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-59-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-60-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-61-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-62-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-63-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-64-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-65-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-66-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-67-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2388-68-0x0000000000400000-0x00000000004C7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-14 13:07
Reported
2024-06-14 13:10
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
155s
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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Disables Task Manager via registry modification
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\a9d55d08eecc9a13a7526c6757376596_JaffaCakes118.exe" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
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 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
| US | 8.8.8.8:53 | levkrasov.ddns.net | udp |
Files
memory/2100-0-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/2100-1-0x00000000009B0000-0x00000000009B1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | a9d55d08eecc9a13a7526c6757376596 |
| SHA1 | d7b781ba204e4f2dbb67dbbb743fb843a7c72bab |
| SHA256 | 421cc26f9fa03acda748215dd8f5d3cbb22eff317fbcfacfbb2e6e6156309429 |
| SHA512 | 0045848210d02543d3d4516c9e20915890b74415decd53892f8d7a409de54073c1c335e3249860f9ff901adec57b0a5cb787f45a170dab295349f43daa6bf684 |
memory/4972-62-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-63-0x00000000022A0000-0x00000000022A1000-memory.dmp
memory/3680-64-0x0000000000650000-0x0000000000651000-memory.dmp
memory/2100-65-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-66-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-67-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-69-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-70-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-71-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-72-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-73-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-74-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-75-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-76-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-77-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-78-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-79-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4972-80-0x0000000000400000-0x00000000004C7000-memory.dmp