General
- Target 09eef44272d050d8054cf913ed7bbf48.exe
- Size 3.2MB
- Sample240310-mxtnnabb81
- SHA256 87f220dad3bbeec6f39ed3e74eaa5b63f91924104b238fd33b4c5d49cc88f1ac
- MD5 09eef44272d050d8054cf913ed7bbf48
- SHA1 b4cd2add18e8445529b107d5ee847b89c70db333
- SHA512 867189c8cde505c22c377d4b68665c235e019b7127b3dbfdf4babdf8cd67985753898945d767c99122b3fe348b768e1e11bf3c340feedc0182c4c584a20ecf30
- SSDEEP 98304:Cc8eC24luyRsHatJTnXk8AkY9/7x0go6/e6BJ4:9kuyRsHSXk777oq3U
- MD5 SHA1 SHA512 SSDEEP
Behavioral task
behavioral1
Sample
09eef44272d050d8054cf913ed7bbf48.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
09eef44272d050d8054cf913ed7bbf48.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
-
- Target 09eef44272d050d8054cf913ed7bbf48.exe
- Size 3.2MB
- SHA256 87f220dad3bbeec6f39ed3e74eaa5b63f91924104b238fd33b4c5d49cc88f1ac
- MD5 09eef44272d050d8054cf913ed7bbf48
- SHA1 b4cd2add18e8445529b107d5ee847b89c70db333
- SHA512 867189c8cde505c22c377d4b68665c235e019b7127b3dbfdf4babdf8cd67985753898945d767c99122b3fe348b768e1e11bf3c340feedc0182c4c584a20ecf30
- SSDEEP 98304:Cc8eC24luyRsHatJTnXk8AkY9/7x0go6/e6BJ4:9kuyRsHSXk777oq3U
- MD5 SHA1 SHA512 SSDEEP
DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
Modifies WinLogon for persistence
Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
Drops file in Drivers directory
Manipulates Digital Signatures
Attackers can apply techniques such as modifying certain DLL exports to make their binary seem valid.
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Deletes itself
Executes dropped EXE
Adds Run key to start application
Drops desktop.ini file(s)
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
Drops file in System32 directory
Modifies termsrv.dll
Commonly used to allow simultaneous RDP sessions.
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
5Subvert Trust Controls
1Install Root Certificate
1