Analysis Overview
SHA256
e3211bb4471cb96576a110f6f81779acaa742d8a6732191bcec307c317dec612
Threat Level: Known bad
The file f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Modifies WinLogon for persistence
Sets file to hidden
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
Deletes itself
UPX packed file
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Views/modifies file attributes
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-04-19 09:24
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-19 09:24
Reported
2024-04-19 09:27
Platform
win7-20240220-en
Max time kernel
150s
Max time network
146s
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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.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 |
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\MSDCSC\msdcsc.exe | N/A |
| 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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| 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 |
| 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 |
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\ChromeUpdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\ChromeUpdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2204 set thread context of 2224 | N/A | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe |
| PID 2456 set thread context of 1584 | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe |
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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| 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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_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\notepad.exe
notepad
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_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:\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 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| US | 8.8.8.8:53 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| US | 8.8.8.8:53 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
Files
memory/2224-2-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-4-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-6-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-11-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-10-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2224-12-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-13-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-14-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-16-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2224-17-0x00000000003E0000-0x00000000003E1000-memory.dmp
memory/2420-42-0x00000000008E0000-0x00000000008E1000-memory.dmp
memory/2420-21-0x0000000000080000-0x0000000000081000-memory.dmp
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | f9ffef8cc5c3608c3b4b03f3ab3693a4 |
| SHA1 | f85e2745ce0f2f404d97236cd5a751f931e4a3ff |
| SHA256 | e3211bb4471cb96576a110f6f81779acaa742d8a6732191bcec307c317dec612 |
| SHA512 | fa9d89cf9813db7ec65b6c5f266938ebe2653216cbf272e3095727e70a559f93292028f845161021c1ae85da691bbd764b2ea47ee8a19cc88cfdcb188f0deadb |
memory/1584-69-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/1584-68-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/1584-70-0x00000000003F0000-0x00000000003F1000-memory.dmp
memory/1584-71-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/1248-99-0x0000000001D70000-0x0000000001D71000-memory.dmp
memory/2224-102-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/1584-105-0x0000000000400000-0x00000000004E8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-19 09:24
Reported
2024-04-19 09:27
Platform
win10v2004-20240412-en
Max time kernel
149s
Max time network
144s
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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.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\MSDCSC\msdcsc.exe | N/A |
| 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 |
| 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 |
| N/A | N/A | N/A | N/A |
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| 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 |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ChromeUpdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ChromeUpdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3672 set thread context of 2368 | N/A | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe |
| PID 1020 set thread context of 852 | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.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\f9ffef8cc5c3608c3b4b03f3ab3693a4_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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| 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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f9ffef8cc5c3608c3b4b03f3ab3693a4_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\notepad.exe
notepad
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\f9ffef8cc5c3608c3b4b03f3ab3693a4_JaffaCakes118.exe" +s +h
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
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 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 156.33.209.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.139.73.23.in-addr.arpa | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
| US | 8.8.8.8:53 | steaminformation.no-ip.biz | udp |
| FR | 78.159.134.214:1177 | steaminformation.no-ip.biz | tcp |
Files
memory/2368-2-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2368-4-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2368-5-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2368-7-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2368-8-0x0000000000B10000-0x0000000000B11000-memory.dmp
memory/2096-12-0x0000000000BF0000-0x0000000000BF1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | f9ffef8cc5c3608c3b4b03f3ab3693a4 |
| SHA1 | f85e2745ce0f2f404d97236cd5a751f931e4a3ff |
| SHA256 | e3211bb4471cb96576a110f6f81779acaa742d8a6732191bcec307c317dec612 |
| SHA512 | fa9d89cf9813db7ec65b6c5f266938ebe2653216cbf272e3095727e70a559f93292028f845161021c1ae85da691bbd764b2ea47ee8a19cc88cfdcb188f0deadb |
memory/852-78-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-79-0x0000000002300000-0x0000000002301000-memory.dmp
memory/852-80-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-81-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-83-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2648-82-0x0000000001250000-0x0000000001251000-memory.dmp
memory/852-84-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/2368-85-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-88-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-90-0x0000000002300000-0x0000000002301000-memory.dmp
memory/852-91-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-93-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-95-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-97-0x0000000000400000-0x00000000004E8000-memory.dmp
memory/852-99-0x0000000000400000-0x00000000004E8000-memory.dmp