Analysis Overview
SHA256
ccee26ea662c87a6c3171b091044282849cc8d46d4b9b9da6cf429b8114c4239
Threat Level: Known bad
The file e88479a6a059eb522d2fec40fe2e1a88 was found to be: Known bad.
Malicious Activity Summary
Blackmatter family
BlackMatter Ransomware
Renames multiple (159) files with added filename extension
Renames multiple (127) 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
2023-12-20 16:31
Signatures
Blackmatter family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-20 16:31
Reported
2023-12-21 02:33
Platform
win7-20231129-en
Max time kernel
120s
Max time network
124s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (127) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\krIQ2dkQs.bmp" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\krIQ2dkQs.bmp" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe
"C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
Files
memory/2892-0-0x0000000000300000-0x0000000000340000-memory.dmp
C:\krIQ2dkQs.README.txt
| MD5 | 437cb918360e1d94c6f19a85ddd428a6 |
| SHA1 | 30e3c0c3aed4054285fef804ebc75dc412fcbf41 |
| SHA256 | f99625bb156ed0b20feac08c71839cc2f03bee9701e83bd60fcc4b747ba726b4 |
| SHA512 | 3aac087bdcfcda772c46b208118a223f577a81277e95c73641cefb30ff6d5d50f2a7b73697927d5ca4f23ff10614a60d7867f5af0a7ccf8a5e14d9d022a3c9b7 |
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-20 16:31
Reported
2023-12-21 02:33
Platform
win10v2004-20231215-en
Max time kernel
131s
Max time network
147s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (159) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\roQADg4Ah.bmp" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\roQADg4Ah.bmp" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe
"C:\Users\Admin\AppData\Local\Temp\e88479a6a059eb522d2fec40fe2e1a88.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/896-1-0x0000000002A30000-0x0000000002A40000-memory.dmp
memory/896-0-0x0000000002A30000-0x0000000002A40000-memory.dmp
F:\roQADg4Ah.README.txt
| MD5 | 437cb918360e1d94c6f19a85ddd428a6 |
| SHA1 | 30e3c0c3aed4054285fef804ebc75dc412fcbf41 |
| SHA256 | f99625bb156ed0b20feac08c71839cc2f03bee9701e83bd60fcc4b747ba726b4 |
| SHA512 | 3aac087bdcfcda772c46b208118a223f577a81277e95c73641cefb30ff6d5d50f2a7b73697927d5ca4f23ff10614a60d7867f5af0a7ccf8a5e14d9d022a3c9b7 |