Analysis Overview
SHA256
af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe
Threat Level: Known bad
The file af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Darkcomet family
Sets file to hidden
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Views/modifies file attributes
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-26 02:05
Signatures
Darkcomet family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-26 02:05
Reported
2024-07-26 02:08
Platform
win7-20240704-en
Max time kernel
150s
Max time network
151s
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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.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\AppData\Local\Temp\ULTIMAMULTI2024.EXE | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Loads dropped DLL
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\notepad.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
"C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
"C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE"
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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | jvjv2044duck33.duckdns.org | udp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| US | 8.8.8.8:53 | jvjv2044duck33.duckdns.org | udp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| US | 8.8.8.8:53 | jvjv2044duck33.duckdns.org | udp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
Files
memory/1952-2-0x0000000000240000-0x0000000000241000-memory.dmp
\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
| MD5 | 0a1c8bdec0475a012049ae3eb0e7a0ef |
| SHA1 | 21e7736e539d9f3af66bdcb22b21cf7882aa531e |
| SHA256 | b58e20b5e2888cc7b0716bb858be28ff328d35e487f5c64dadc73cf6c3dd5df8 |
| SHA512 | 1c05f9daf94bb063238c42798ecc024afb6ca48d627e5d25d1898fc238283d96eb3b9fa3c7a4065fa2a805945dad0a9039c1807a35fdf5280d32afc35db857f5 |
memory/2800-10-0x0000000000AF0000-0x0000000000B00000-memory.dmp
\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | e2d5c62c52be4b7a373943783d03d8b1 |
| SHA1 | 3a115983e2ac0b94982ad5c9e701225151875ca6 |
| SHA256 | af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe |
| SHA512 | 78d179ac338bb9e78909aadb1ffa7cc7fc4b9c4136dc1fb14e8c63916f6b7da93722aa7dccf7afdc05548d3657ea7c95608a4a60fee6a3b09418b78f5074b64e |
memory/1036-20-0x00000000000C0000-0x00000000000C1000-memory.dmp
memory/1036-58-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/1952-59-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2916-60-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2916-62-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2916-66-0x0000000000400000-0x00000000004BA000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-26 02:05
Reported
2024-07-26 02:09
Platform
win10v2004-20240709-en
Max time kernel
150s
Max time network
109s
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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.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-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE | N/A |
| 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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\notepad.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Documents\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\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
"C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
"C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | jvjv2044duck33.duckdns.org | udp |
| TR | 78.177.68.243:1604 | jvjv2044duck33.duckdns.org | tcp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/436-0-0x0000000000620000-0x0000000000621000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
| MD5 | 0a1c8bdec0475a012049ae3eb0e7a0ef |
| SHA1 | 21e7736e539d9f3af66bdcb22b21cf7882aa531e |
| SHA256 | b58e20b5e2888cc7b0716bb858be28ff328d35e487f5c64dadc73cf6c3dd5df8 |
| SHA512 | 1c05f9daf94bb063238c42798ecc024afb6ca48d627e5d25d1898fc238283d96eb3b9fa3c7a4065fa2a805945dad0a9039c1807a35fdf5280d32afc35db857f5 |
memory/3052-14-0x000000007329E000-0x000000007329F000-memory.dmp
memory/3052-15-0x0000000000B90000-0x0000000000BA0000-memory.dmp
memory/3052-16-0x0000000005450000-0x00000000054EC000-memory.dmp
memory/3052-17-0x0000000005AA0000-0x0000000006044000-memory.dmp
memory/3052-18-0x0000000005590000-0x0000000005622000-memory.dmp
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
| MD5 | e2d5c62c52be4b7a373943783d03d8b1 |
| SHA1 | 3a115983e2ac0b94982ad5c9e701225151875ca6 |
| SHA256 | af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe |
| SHA512 | 78d179ac338bb9e78909aadb1ffa7cc7fc4b9c4136dc1fb14e8c63916f6b7da93722aa7dccf7afdc05548d3657ea7c95608a4a60fee6a3b09418b78f5074b64e |
memory/3052-67-0x0000000005500000-0x000000000550A000-memory.dmp
memory/3052-68-0x0000000005720000-0x0000000005776000-memory.dmp
memory/3052-69-0x0000000073290000-0x0000000073A40000-memory.dmp
memory/3040-80-0x0000000000670000-0x0000000000671000-memory.dmp
memory/436-81-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1468-82-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3052-84-0x000000007329E000-0x000000007329F000-memory.dmp
memory/3052-85-0x0000000073290000-0x0000000073A40000-memory.dmp
memory/1468-86-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1468-97-0x0000000000400000-0x00000000004BA000-memory.dmp