Analysis Overview
SHA256
2aad85dbd4c79bd21c6218892552d5c9fb216293a251559ba59d45d56a01437c
Threat Level: Known bad
The file 5c66cd4f21254f83663819138e634dd9_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
BlackMatter Ransomware
Blackmatter family
Renames multiple (155) files with added filename extension
Renames multiple (187) files with added filename extension
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Modifies Control Panel
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-19 14:49
Signatures
Blackmatter family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-19 14:49
Reported
2024-07-19 14:52
Platform
win10v2004-20240709-en
Max time kernel
95s
Max time network
125s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (155) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\il0ExfkEX.bmp" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\il0ExfkEX.bmp" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | fluentzip.org | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 121.170.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | 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 |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/564-1-0x00000000026A0000-0x00000000026B0000-memory.dmp
memory/564-0-0x00000000026A0000-0x00000000026B0000-memory.dmp
C:\Users\il0ExfkEX.README.txt
| MD5 | 896f61d321c4af276b7a80be14715992 |
| SHA1 | feca31af9616ac09d73900d32a8dc8d08fce51e6 |
| SHA256 | 8553b63516ebbad0ce0653b3e21831b5dd114584ec49f6f413ad928ee68e6c21 |
| SHA512 | 81fd91036800c12a66e9c352a70293734f5d4355c6c2fbf39446602655f596ac3afc150a4c0494c804a4226aba55aa65f031bd0957f79ffd131e5329fb0ec82e |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-19 14:49
Reported
2024-07-19 14:52
Platform
win7-20240708-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (187) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\uLxWKChWv.bmp" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\uLxWKChWv.bmp" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5c66cd4f21254f83663819138e634dd9_JaffaCakes118.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | fluentzip.org | udp |
Files
memory/1864-0-0x0000000000910000-0x0000000000950000-memory.dmp
F:\uLxWKChWv.README.txt
| MD5 | 896f61d321c4af276b7a80be14715992 |
| SHA1 | feca31af9616ac09d73900d32a8dc8d08fce51e6 |
| SHA256 | 8553b63516ebbad0ce0653b3e21831b5dd114584ec49f6f413ad928ee68e6c21 |
| SHA512 | 81fd91036800c12a66e9c352a70293734f5d4355c6c2fbf39446602655f596ac3afc150a4c0494c804a4226aba55aa65f031bd0957f79ffd131e5329fb0ec82e |