Analysis Overview
SHA256
23ec9eebb57bc2df3edcc310629f9320fdd2d5f52026f07fe7a280abe77b57f2
Threat Level: Known bad
The file 6390b876f7a9236842427d1aa64c47cb_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Sets file to hidden
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Views/modifies file attributes
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-22 14:36
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-22 14:36
Reported
2024-07-22 14:56
Platform
win10v2004-20240709-en
Max time kernel
150s
Max time network
150s
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:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.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-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | 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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windowshostmanagerupdate.exe = "C:\\Users\\Admin\\AppData\\Roaming\\windowshostmanagerupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2844 set thread context of 4928 | N/A | C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\Microsoft.NET\Framework\v2.0.50727 | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
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\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C ren C:\Users\Admin\AppData\Roaming\windowshostmanagerupdate windowshostmanagerupdate.exe && exit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
| IE | 52.111.236.23:443 | tcp | |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/2844-0-0x0000000074782000-0x0000000074783000-memory.dmp
memory/2844-1-0x0000000074780000-0x0000000074D31000-memory.dmp
memory/2844-2-0x0000000074780000-0x0000000074D31000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowshostmanagerupdate
| MD5 | 6390b876f7a9236842427d1aa64c47cb |
| SHA1 | d5a728fb6f1e8339a61076d499d47d932df3fcf5 |
| SHA256 | 23ec9eebb57bc2df3edcc310629f9320fdd2d5f52026f07fe7a280abe77b57f2 |
| SHA512 | bb7cfee5576c193c5147b7faae1e390db22a28b942ae4111f10994984bbd8713ce23e29ec93438aa9cd4f3bfe6504192892da5d84570ac203282b0fb7b6e6e8e |
memory/4928-5-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/4928-8-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/4928-6-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/4928-9-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2844-12-0x0000000074780000-0x0000000074D31000-memory.dmp
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | e118330b4629b12368d91b9df6488be0 |
| SHA1 | ce90218c7e3b90df2a3409ec253048bb6472c2fd |
| SHA256 | 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9 |
| SHA512 | ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0 |
memory/4928-21-0x0000000000400000-0x00000000004CD000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-22 14:36
Reported
2024-07-22 14:56
Platform
win7-20240704-en
Max time kernel
118s
Max time network
120s
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:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.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 |
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:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\windowshostmanagerupdate.exe = "C:\\Users\\Admin\\AppData\\Roaming\\windowshostmanagerupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2680 set thread context of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Microsoft.NET\Framework\v2.0.50727 | C:\Windows\SysWOW64\attrib.exe | N/A |
| File opened for modification | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
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\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6390b876f7a9236842427d1aa64c47cb_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C ren C:\Users\Admin\AppData\Roaming\windowshostmanagerupdate windowshostmanagerupdate.exe && exit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
Network
Files
memory/2680-0-0x0000000074711000-0x0000000074712000-memory.dmp
memory/2680-1-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2680-2-0x0000000074710000-0x0000000074CBB000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowshostmanagerupdate
| MD5 | 6390b876f7a9236842427d1aa64c47cb |
| SHA1 | d5a728fb6f1e8339a61076d499d47d932df3fcf5 |
| SHA256 | 23ec9eebb57bc2df3edcc310629f9320fdd2d5f52026f07fe7a280abe77b57f2 |
| SHA512 | bb7cfee5576c193c5147b7faae1e390db22a28b942ae4111f10994984bbd8713ce23e29ec93438aa9cd4f3bfe6504192892da5d84570ac203282b0fb7b6e6e8e |
memory/2736-5-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-14-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-23-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-22-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2736-18-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-16-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-12-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-10-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-9-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-24-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-7-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-26-0x0000000000400000-0x00000000004CD000-memory.dmp
memory/2736-25-0x0000000000280000-0x0000000000281000-memory.dmp
memory/2680-29-0x0000000074710000-0x0000000074CBB000-memory.dmp
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | ed797d8dc2c92401985d162e42ffa450 |
| SHA1 | 0f02fc517c7facc4baefde4fe9467fb6488ebabe |
| SHA256 | b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e |
| SHA512 | e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2 |
memory/2736-37-0x0000000000400000-0x00000000004CD000-memory.dmp