General
-
Target
https://www.dropbox.com/scl/fo/qy2qk79x2gtuwswxjxcla/h?rlkey=9ophpx1zlqaopl8j3d53sf3wi&dl=0
-
Sample
240327-yyb1saec6z
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://www.dropbox.com/scl/fo/qy2qk79x2gtuwswxjxcla/h?rlkey=9ophpx1zlqaopl8j3d53sf3wi&dl=0
Resource
win10-20240221-en
Behavioral task
behavioral2
Sample
https://www.dropbox.com/scl/fo/qy2qk79x2gtuwswxjxcla/h?rlkey=9ophpx1zlqaopl8j3d53sf3wi&dl=0
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
https://www.dropbox.com/scl/fo/qy2qk79x2gtuwswxjxcla/h?rlkey=9ophpx1zlqaopl8j3d53sf3wi&dl=0
Resource
win11-20240221-en
Malware Config
Extracted
crimsonrat
185.136.161.124
Extracted
danabot
51.178.195.151
51.222.39.81
149.255.35.125
38.68.50.179
51.77.7.204
Targets
-
-
Target
https://www.dropbox.com/scl/fo/qy2qk79x2gtuwswxjxcla/h?rlkey=9ophpx1zlqaopl8j3d53sf3wi&dl=0
-
CrimsonRAT main payload
-
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
-
Modifies WinLogon for persistence
-
Suspicious use of NtCreateUserProcessOtherParentProcess
-
ModiLoader First Stage
-
RevengeRat Executable
-
Disables Task Manager via registry modification
-
Downloads MZ/PE file
-
Drops file in Drivers directory
-
Modifies RDP port number used by Windows
-
Modifies Windows Firewall
-
Sets service image path in registry
-
ACProtect 1.3x - 1.4x DLL software
Detects file using ACProtect software.
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
-
Executes dropped EXE
-
Loads dropped DLL
-
Modifies system executable filetype association
-
Registers COM server for autorun
-
Uses the VBS compiler for execution
-
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.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Legitimate hosting services abused for malware hosting/C2
-
Checks system information in the registry
System information is often read in order to detect sandboxing environments.
-
Drops file in System32 directory
-
Sets desktop wallpaper using registry
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
9Scripting
1Subvert Trust Controls
1Install Root Certificate
1