General
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Target
file.exe
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Size
14.8MB
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Sample
231121-ycymnaha8x
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MD5
b1d5ab180b539da823cf40c7638d0286
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SHA1
6713943614743cf7cbf255fb6cef4aa20c1bf4ed
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SHA256
fae531687cc458d8d7e504b81776514eec3cd9700891a1b873afa3748c84cc78
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SHA512
1ce698c9cddf36974bbc38ea0ef707bfd02d4a4199bde23e5324b7982f95b0c40b773b360e1b005df6b67a66261fabc84923f2ed0381d790c8d19fa9eec17f79
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SSDEEP
393216:Lexbl6e6TvVmR/i+W7n/+8HVi5vcPF07zvrRl:LexZpkmRa+W7n/p1i5KF0PrR
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231025-en
Malware Config
Extracted
smokeloader
up3
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
14.8MB
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MD5
b1d5ab180b539da823cf40c7638d0286
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SHA1
6713943614743cf7cbf255fb6cef4aa20c1bf4ed
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SHA256
fae531687cc458d8d7e504b81776514eec3cd9700891a1b873afa3748c84cc78
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SHA512
1ce698c9cddf36974bbc38ea0ef707bfd02d4a4199bde23e5324b7982f95b0c40b773b360e1b005df6b67a66261fabc84923f2ed0381d790c8d19fa9eec17f79
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SSDEEP
393216:Lexbl6e6TvVmR/i+W7n/+8HVi5vcPF07zvrRl:LexZpkmRa+W7n/p1i5KF0PrR
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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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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Modifies boot configuration data using bcdedit
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies Windows Firewall
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Possible attempt to disable PatchGuard
Rootkits can use kernel patching to embed themselves in an operating system.
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Stops running service(s)
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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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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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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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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
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
6Disable or Modify Tools
4Modify Registry
7Subvert Trust Controls
1Install Root Certificate
1