Analysis Overview
SHA256
570985f06c6a51a2df7ff6706931807de298709e0083a56b38caf572635efec0
Threat Level: Known bad
The file f007b11b6014d888d33b581c438bc296_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies security service
Darkcomet
Windows security bypass
Modifies WinLogon for persistence
Darkcomet family
Modifies firewall policy service
Disables Task Manager via registry modification
Checks BIOS information in registry
Deletes itself
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates system info in registry
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 01:56
Signatures
Darkcomet family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 01:56
Reported
2024-04-15 01:59
Platform
win7-20240221-en
Max time kernel
150s
Max time network
152s
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\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Windows\SysWOW64\explorer.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Windows\SysWOW64\explorer.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1932 set thread context of 2560 | N/A | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_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\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp |
Files
memory/1932-0-0x0000000000260000-0x0000000000261000-memory.dmp
memory/1220-2-0x0000000000080000-0x0000000000081000-memory.dmp
memory/1220-32-0x0000000000300000-0x0000000000301000-memory.dmp
C:\Windupdt\winupdate.exe
| MD5 | f007b11b6014d888d33b581c438bc296 |
| SHA1 | 18fe4c3997b5730b3c0a375314be046903325817 |
| SHA256 | 570985f06c6a51a2df7ff6706931807de298709e0083a56b38caf572635efec0 |
| SHA512 | 58bc0f72616b8f918ffce1b50a858b50596784e8062860cceb4b9ac92103147f719729460b86c009ce6e404a073beb438d0880e97f23ce61fa66d66e609645b5 |
memory/2560-36-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2560-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2560-42-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2560-40-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2560-44-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2560-50-0x0000000000110000-0x0000000000111000-memory.dmp
memory/2560-49-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2560-47-0x0000000013140000-0x000000001320F000-memory.dmp
memory/2600-90-0x00000000002F0000-0x00000000002F1000-memory.dmp
memory/2624-99-0x00000000004D0000-0x00000000004D1000-memory.dmp
memory/2560-102-0x0000000013140000-0x000000001320F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 01:56
Reported
2024-04-15 01:59
Platform
win10v2004-20240412-en
Max time kernel
150s
Max time network
148s
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\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Windows\SysWOW64\explorer.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 460 set thread context of 4604 | N/A | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.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:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f007b11b6014d888d33b581c438bc296_JaffaCakes118.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3480,i,353436235481858446,15149564830344523381,262144 --variations-seed-version --mojo-platform-channel-handle=1728 /prefetch:8
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.139.73.23.in-addr.arpa | udp |
| US | 71.114.150.5:1000 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 71.114.150.5:1000 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 71.114.150.5:1000 | tcp | |
| US | 8.8.8.8:53 | 41.173.79.40.in-addr.arpa | udp |
| US | 71.114.150.5:1000 | tcp | |
| US | 71.114.150.5:1000 | tcp |
Files
memory/460-0-0x00000000021F0000-0x00000000021F1000-memory.dmp
memory/3720-2-0x0000000001410000-0x0000000001411000-memory.dmp
C:\Windupdt\winupdate.exe
| MD5 | f007b11b6014d888d33b581c438bc296 |
| SHA1 | 18fe4c3997b5730b3c0a375314be046903325817 |
| SHA256 | 570985f06c6a51a2df7ff6706931807de298709e0083a56b38caf572635efec0 |
| SHA512 | 58bc0f72616b8f918ffce1b50a858b50596784e8062860cceb4b9ac92103147f719729460b86c009ce6e404a073beb438d0880e97f23ce61fa66d66e609645b5 |
memory/4604-7-0x0000000013140000-0x000000001320F000-memory.dmp
memory/3200-9-0x0000000001220000-0x0000000001221000-memory.dmp
memory/460-11-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-12-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-10-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-14-0x0000000000E50000-0x0000000000E51000-memory.dmp
memory/2876-15-0x00000000012D0000-0x00000000012D1000-memory.dmp
memory/4604-16-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-17-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-13-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-8-0x0000000013140000-0x000000001320F000-memory.dmp
memory/4604-19-0x0000000013140000-0x000000001320F000-memory.dmp