Analysis
-
max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
24-01-2022 00:36
Static task
static1
Behavioral task
behavioral1
Sample
45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe
Resource
win10-en-20211208
General
-
Target
45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe
-
Size
66KB
-
MD5
f04d97ffa32eec5aac8f84d86a1f51a0
-
SHA1
bd75fd070c4962aa59653f934e4af68b609a021d
-
SHA256
45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d
-
SHA512
77bdb50d7b300e6acd2ef273751673e7dc6c52610ce2c007f7d98805535c10dc96975b74a7ee8ed41f3097a485e57803053c52f0b1f27e524f7f04b0aee7d284
Malware Config
Extracted
C:\TEVwl5dwR.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/GDBJS76DH3D4IKQD2QO7R
Signatures
-
BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
-
Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\RevokeEnter.tif.TEVwl5dwR 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe File renamed C:\Users\Admin\Pictures\InvokeUnblock.tif => C:\Users\Admin\Pictures\InvokeUnblock.tif.TEVwl5dwR 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe File opened for modification C:\Users\Admin\Pictures\InvokeUnblock.tif.TEVwl5dwR 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe File renamed C:\Users\Admin\Pictures\RevokeEnter.tif => C:\Users\Admin\Pictures\RevokeEnter.tif.TEVwl5dwR 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\TEVwl5dwR.bmp" 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\TEVwl5dwR.bmp" 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe -
Modifies Control Panel 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\WallpaperStyle = "10" 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Key created \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\International 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Key created \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeDebugPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: 36 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeImpersonatePrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeIncBasePriorityPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeIncreaseQuotaPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: 33 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeManageVolumePrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeProfSingleProcessPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeRestorePrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeSecurityPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeSystemProfilePrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeTakeOwnershipPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeShutdownPrivilege 528 45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe Token: SeBackupPrivilege 1796 vssvc.exe Token: SeRestorePrivilege 1796 vssvc.exe Token: SeAuditPrivilege 1796 vssvc.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe"C:\Users\Admin\AppData\Local\Temp\45ecce9dfec886e2b092a996f6affb9e7417d6121e58b0ec643be7e36a03106d.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:528
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1796