General
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Target
069b33dd85960262ad3e9adc23db48c92ede3087e612d3cd0407ebfa224c8c7c
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Size
237KB
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Sample
231208-t21fbsbagr
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MD5
52febcfa0acab2c5f8d3a4f82592f74a
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SHA1
5d5842f9f71f3a41a0efd23490de697eb6c33532
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SHA256
069b33dd85960262ad3e9adc23db48c92ede3087e612d3cd0407ebfa224c8c7c
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SHA512
1d5879d23edcf17744adc8d9031466d473aef6be1631e4ef60f8a9adb442e9f51f23da1ad0c98ba323330a7c15d9afb3d4244f678469b81c1a50309c019b83f1
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SSDEEP
3072:X2+FgKtY/ePqiK/EdPmZ2HBd+qzGZ5u2FsPRByG8UoGiWHqTCK:H2KtBQ/EZmgf+qaZ5/GyGJBHqT
Static task
static1
Behavioral task
behavioral1
Sample
069b33dd85960262ad3e9adc23db48c92ede3087e612d3cd0407ebfa224c8c7c.exe
Resource
win10v2004-20231130-en
Malware Config
Extracted
smokeloader
up3
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.nbzi
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offline_id
csCsb6cUvy0iMa6NgGCGH0hSfXQlGjZVEmFVkgt1
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payload_url
http://brusuax.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Targets
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Target
069b33dd85960262ad3e9adc23db48c92ede3087e612d3cd0407ebfa224c8c7c
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Size
237KB
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MD5
52febcfa0acab2c5f8d3a4f82592f74a
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SHA1
5d5842f9f71f3a41a0efd23490de697eb6c33532
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SHA256
069b33dd85960262ad3e9adc23db48c92ede3087e612d3cd0407ebfa224c8c7c
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SHA512
1d5879d23edcf17744adc8d9031466d473aef6be1631e4ef60f8a9adb442e9f51f23da1ad0c98ba323330a7c15d9afb3d4244f678469b81c1a50309c019b83f1
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SSDEEP
3072:X2+FgKtY/ePqiK/EdPmZ2HBd+qzGZ5u2FsPRByG8UoGiWHqTCK:H2KtBQ/EZmgf+qaZ5/GyGJBHqT
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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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Detect ZGRat V1
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Detected Djvu ransomware
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Downloads MZ/PE file
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Deletes itself
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Executes dropped EXE
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Modifies file permissions
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Adds Run key to start application
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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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Suspicious use of NtSetInformationThreadHideFromDebugger
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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
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
File and Directory Permissions Modification
1Modify Registry
1Virtualization/Sandbox Evasion
1