General
-
Target
Computer Raper.exe
-
Size
85.4MB
-
Sample
240503-vffz8sec77
-
MD5
bdb24ed9f869fcd462b316148514fc5b
-
SHA1
83935122b626378a3149e9036cd751514add4b52
-
SHA256
83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0
-
SHA512
12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611
-
SSDEEP
1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97
Static task
static1
Behavioral task
behavioral1
Sample
Computer Raper.exe
Resource
win10v2004-20240419-en
Malware Config
Extracted
C:\e9470325\PZIUMRKN-MANUAL.txt
gandcrab
http://gandcrabmfe6mnef.onion/630bc4a4cec04c85
Targets
-
-
Target
Computer Raper.exe
-
Size
85.4MB
-
MD5
bdb24ed9f869fcd462b316148514fc5b
-
SHA1
83935122b626378a3149e9036cd751514add4b52
-
SHA256
83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0
-
SHA512
12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611
-
SSDEEP
1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97
-
BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
-
Chimera
Ransomware which infects local and network files, often distributed via Dropbox links.
-
Chimera Ransomware Loader DLL
Drops/unpacks executable file which resembles Chimera's Loader.dll.
-
Modifies WinLogon for persistence
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Renames multiple (317) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
mimikatz is an open source tool to dump credentials on Windows
-
Disables RegEdit via registry modification
-
Disables Task Manager via registry modification
-
Disables use of System Restore points
-
Modifies Windows Firewall
-
Sets file execution options in registry
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
-
Executes dropped EXE
-
Loads dropped DLL
-
Adds Run key to start application
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Modifies WinLogon
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
AutoIT Executable
AutoIT scripts compiled to PE executables.
-
Sets desktop wallpaper using registry
-
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
2Winlogon Helper DLL
2Create or Modify System Process
2Windows Service
2Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
2Winlogon Helper DLL
2Create or Modify System Process
2Windows Service
2Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Indicator Removal
2File Deletion
2Modify Registry
11Pre-OS Boot
1Bootkit
1