General
-
Target
RNSM00365.7z
-
Size
21.2MB
-
Sample
241107-tyx6sswbkn
-
MD5
3dcf38d6eb0239f2371910420c478d24
-
SHA1
db2fd304e4110b274df019eafdddb734a21c8a6e
-
SHA256
9d5387010b7383c83509798c3acc2228192602c93b54ab3b2a8bfb630a1347a8
-
SHA512
be720f8e324083417bc19814d529792bff223ed45e6ad9f6cc86df8a796cf9016183704c0155de955d9300c1cbec43f9aea2d826115e39d31bfd2ba874ae39fb
-
SSDEEP
393216:VKc/3fupUewDJCuZkv1vTFMI8+UkcHhuDIfaPv+vVMMyPqBoeu5/dwNX1/:V3H0U7kv1v2I8+WhuDIyXQVMJHGNF/
Static task
static1
Malware Config
Extracted
C:\$Recycle.Bin\S-1-5-21-3756129449-3121373848-4276368241-1000\JKTHZ-MANUAL.txt
gandcrab
http://gandcrabmfe6mnef.onion/82ee6a948478294f
Targets
-
-
Target
RNSM00365.7z
-
Size
21.2MB
-
MD5
3dcf38d6eb0239f2371910420c478d24
-
SHA1
db2fd304e4110b274df019eafdddb734a21c8a6e
-
SHA256
9d5387010b7383c83509798c3acc2228192602c93b54ab3b2a8bfb630a1347a8
-
SHA512
be720f8e324083417bc19814d529792bff223ed45e6ad9f6cc86df8a796cf9016183704c0155de955d9300c1cbec43f9aea2d826115e39d31bfd2ba874ae39fb
-
SSDEEP
393216:VKc/3fupUewDJCuZkv1vTFMI8+UkcHhuDIfaPv+vVMMyPqBoeu5/dwNX1/:V3H0U7kv1v2I8+WhuDIyXQVMJHGNF/
-
Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
-
Dharma family
-
Gandcrab family
-
Modifies WinLogon for persistence
-
Modifies firewall policy service
-
Modifies security service
-
Troldesh family
-
Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
-
Renames multiple (214) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
-
Disables Task Manager via registry modification
-
Downloads MZ/PE file
-
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
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops desktop.ini file(s)
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
-
Drops file in System32 directory
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Direct Volume Access
1Impair Defenses
4Disable or Modify System Firewall
1Disable or Modify Tools
3Indicator Removal
2File Deletion
2Modify Registry
9Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1