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General
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Target
file.exe
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Size
1.4MB
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Sample
231103-nye3bsca25
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MD5
d3bcc11e32d75fec333d1857c4e0a3da
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SHA1
bea8ba8c44766d446e264bb6d25c9f9b5158ff78
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SHA256
57dd76c7c512afbed21d7304a66fffd89cd904c39a47d459a49aec1f5f1d5235
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SHA512
300b305602265e84dab3bf2941a35a409bafb263e955397ac41ff29f01b5e9ee17b0907db39b374f8e8973c3e2200b0b9b34c2074f11e2c5a67099f429b6c73d
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SSDEEP
24576:nbm+AIHqd5yIfvDkTlAKot2+c3t7JVpfjfWZnHbyBrN1Rd9rmRve2GViRXUmFX:bm+Aoqd5yMvDkTlAKoty3t7/Fjs+BrvK
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231025-en
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Targets
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Target
file.exe
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Size
1.4MB
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MD5
d3bcc11e32d75fec333d1857c4e0a3da
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SHA1
bea8ba8c44766d446e264bb6d25c9f9b5158ff78
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SHA256
57dd76c7c512afbed21d7304a66fffd89cd904c39a47d459a49aec1f5f1d5235
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SHA512
300b305602265e84dab3bf2941a35a409bafb263e955397ac41ff29f01b5e9ee17b0907db39b374f8e8973c3e2200b0b9b34c2074f11e2c5a67099f429b6c73d
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SSDEEP
24576:nbm+AIHqd5yIfvDkTlAKot2+c3t7JVpfjfWZnHbyBrN1Rd9rmRve2GViRXUmFX:bm+Aoqd5yMvDkTlAKoty3t7/Fjs+BrvK
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Glupteba payload
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Downloads MZ/PE file
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Modifies Windows Firewall
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Registers COM server for autorun
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
5