Analysis Overview
SHA256
78dbf9cefa204847ca312bd956fd91d7b9e6bb1021e4e45d438ac482600d4986
Threat Level: Known bad
The file 02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Modifies WinLogon for persistence
Sets file to hidden
Executes dropped EXE
Deletes itself
Checks computer location settings
Loads dropped DLL
Uses the VBS compiler for execution
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Views/modifies file attributes
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-22 16:40
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-22 16:40
Reported
2024-06-22 16:43
Platform
win10v2004-20240508-en
Max time kernel
126s
Max time network
127s
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\vbc.exe | N/A |
| 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\\Documents\\MSDCSC\\gKBQxzT6eDqb\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\BANNER.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\BANNER.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\gKBQxzT6eDqb\msdcsc.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\gKBQxzT6eDqb\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4424 set thread context of 3172 | N/A | C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\vbc.exe |
| PID 3076 set thread context of 2628 | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\vbc.exe |
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\vbc.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
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\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe" +s +h
C:\Users\Admin\AppData\Local\Temp\BANNER.EXE
"C:\Users\Admin\AppData\Local\Temp\BANNER.EXE"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe" +s +h
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
C:\Users\Admin\AppData\Local\Temp\BANNER.EXE
"C:\Users\Admin\AppData\Local\Temp\BANNER.EXE"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Users\Admin\Documents\MSDCSC\gKBQxzT6eDqb\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\gKBQxzT6eDqb\msdcsc.exe"
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=3804,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 80.90.14.23.in-addr.arpa | udp |
Files
memory/4424-0-0x0000000075082000-0x0000000075083000-memory.dmp
memory/4424-1-0x0000000075080000-0x0000000075631000-memory.dmp
memory/4424-2-0x0000000075080000-0x0000000075631000-memory.dmp
memory/3172-7-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3172-5-0x0000000000400000-0x00000000004B9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\vbc.exe
| MD5 | d881de17aa8f2e2c08cbb7b265f928f9 |
| SHA1 | 08936aebc87decf0af6e8eada191062b5e65ac2a |
| SHA256 | b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0 |
| SHA512 | 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34 |
memory/3172-10-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3172-11-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3172-9-0x0000000000400000-0x00000000004B9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\BANNER.EXE
| MD5 | 463efc38869e2e4e315906d22b5e6d78 |
| SHA1 | 01535b4ccc407affb680ac66258658c4911fb8c2 |
| SHA256 | 4958b9f95e341ad6dcae3024013b3fcf5c5daabd3ff76a2762d731aacec752ba |
| SHA512 | 0be72a9e9d9bdc794e60ffd0046483374f461b32651005b95a3f1df0a8072c7e49205c3abfd6227b85b23c9261235041f7d529f41636d674105e5ee6b1a9f03b |
memory/4424-26-0x0000000075080000-0x0000000075631000-memory.dmp
memory/1820-27-0x0000000071AEE000-0x0000000071AEF000-memory.dmp
memory/3172-17-0x00000000022E0000-0x00000000022E1000-memory.dmp
memory/1820-28-0x0000000000F60000-0x0000000000F6C000-memory.dmp
memory/1820-29-0x0000000005860000-0x00000000058FC000-memory.dmp
memory/1820-30-0x0000000005EB0000-0x0000000006454000-memory.dmp
memory/1820-31-0x0000000005900000-0x0000000005992000-memory.dmp
memory/3940-32-0x0000000000EC0000-0x0000000000EC1000-memory.dmp
memory/1820-34-0x0000000005820000-0x000000000582A000-memory.dmp
memory/1820-37-0x0000000005AF0000-0x0000000005B46000-memory.dmp
memory/1820-33-0x0000000071AE0000-0x0000000072290000-memory.dmp
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | 02fd46f17ec2af02ca108972b9c183a2 |
| SHA1 | 900004b73bfee01f4e8c0650644b2f653363c804 |
| SHA256 | 78dbf9cefa204847ca312bd956fd91d7b9e6bb1021e4e45d438ac482600d4986 |
| SHA512 | aba124b0de620885ba66423bc4b165e86843ca3e3bab92d885ada5dc922df11a0a67e2327977ca3cf2b26b431f47045d488e2a827d340a7c3c42ca201906918f |
memory/3172-94-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2628-102-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2628-165-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1820-170-0x0000000071AEE000-0x0000000071AEF000-memory.dmp
memory/1820-171-0x0000000071AE0000-0x0000000072290000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-22 16:40
Reported
2024-06-22 16:43
Platform
win7-20240611-en
Max time kernel
150s
Max time network
154s
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\vbc.exe | N/A |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\BANNER.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2244 set thread context of 1228 | N/A | C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\vbc.exe |
| PID 1048 set thread context of 752 | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\vbc.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.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 |
Processes
C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\02fd46f17ec2af02ca108972b9c183a2_JaffaCakes118.exe" +s +h
C:\Users\Admin\AppData\Local\Temp\BANNER.EXE
"C:\Users\Admin\AppData\Local\Temp\BANNER.EXE"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\notepad.exe
notepad
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | tast.no-ip.biz | udp |
Files
memory/2244-0-0x0000000074E31000-0x0000000074E32000-memory.dmp
memory/2244-1-0x0000000074E30000-0x00000000753DB000-memory.dmp
memory/2244-2-0x0000000074E30000-0x00000000753DB000-memory.dmp
\Users\Admin\AppData\Local\Temp\vbc.exe
| MD5 | 34aa912defa18c2c129f1e09d75c1d7e |
| SHA1 | 9c3046324657505a30ecd9b1fdb46c05bde7d470 |
| SHA256 | 6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386 |
| SHA512 | d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98 |
memory/1228-7-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-27-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-25-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/1228-32-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-21-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-19-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-18-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2244-33-0x0000000074E30000-0x00000000753DB000-memory.dmp
memory/1228-16-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-34-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-14-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-11-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-9-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1228-28-0x0000000000020000-0x0000000000021000-memory.dmp
memory/1228-35-0x0000000000400000-0x00000000004B9000-memory.dmp
\Users\Admin\AppData\Local\Temp\BANNER.EXE
| MD5 | 463efc38869e2e4e315906d22b5e6d78 |
| SHA1 | 01535b4ccc407affb680ac66258658c4911fb8c2 |
| SHA256 | 4958b9f95e341ad6dcae3024013b3fcf5c5daabd3ff76a2762d731aacec752ba |
| SHA512 | 0be72a9e9d9bdc794e60ffd0046483374f461b32651005b95a3f1df0a8072c7e49205c3abfd6227b85b23c9261235041f7d529f41636d674105e5ee6b1a9f03b |
memory/2516-45-0x00000000010B0000-0x00000000010BC000-memory.dmp
memory/2652-74-0x0000000000170000-0x0000000000171000-memory.dmp
\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | 02fd46f17ec2af02ca108972b9c183a2 |
| SHA1 | 900004b73bfee01f4e8c0650644b2f653363c804 |
| SHA256 | 78dbf9cefa204847ca312bd956fd91d7b9e6bb1021e4e45d438ac482600d4986 |
| SHA512 | aba124b0de620885ba66423bc4b165e86843ca3e3bab92d885ada5dc922df11a0a67e2327977ca3cf2b26b431f47045d488e2a827d340a7c3c42ca201906918f |
memory/1228-86-0x0000000000400000-0x00000000004B9000-memory.dmp