General
- Target xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
- Size 1.7MB
- Sample260528-3fefeaes5z
- SHA256 b1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f
- MD5 032ad1167bf3198836fa7e6d96b55c79
- SHA1 3c35fbf492619b19128e94e5d6fcbacac48f23f1
- SHA512 17d5ecc20f2f9b920f325bbb04378ab043bc74699636cfa6ecfa11f3fb50cfd5e3127dbe68cb8fdb8f6c061b36d0e79aa66e38d0435e5c11defe3114fc454d3b
- SSDEEP 49152:8kQTA8IwMtuvMDVPG4JdXeR4aT6LQ+d3mY/4qxTsx3scv:8akuRD9JdOR4m+lmY/4rx8cv
- TLSH T13E8523097181D373C2FB003085C58FB55A2566224F7566EFFBE89B662F202F4BB661C9
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
Resource
win11-20260513-en
Malware Config
Targets
-
- Target xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
- Size 1.7MB
- SHA256 b1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f
- MD5 032ad1167bf3198836fa7e6d96b55c79
- SHA1 3c35fbf492619b19128e94e5d6fcbacac48f23f1
- SHA512 17d5ecc20f2f9b920f325bbb04378ab043bc74699636cfa6ecfa11f3fb50cfd5e3127dbe68cb8fdb8f6c061b36d0e79aa66e38d0435e5c11defe3114fc454d3b
- SSDEEP 49152:8kQTA8IwMtuvMDVPG4JdXeR4aT6LQ+d3mY/4qxTsx3scv:8akuRD9JdOR4m+lmY/4rx8cv
- TLSH T13E8523097181D373C2FB003085C58FB55A2566224F7566EFFBE89B662F202F4BB661C9
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Family: DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Modifies WinLogon for persistence
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Adds Run key to start application
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Checks whether UAC is enabled
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SmartAssembly .NET packer
Detects SmartAssembly .NET packer.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
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
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4