General
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Target
SubZeroTempSpoofer.exe
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Size
1.6MB
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Sample
240217-1682labg72
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MD5
052449d155e679a80df0061fcc93e502
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SHA1
b09e4fe7002c193cf42ba4da2499b77ae561c457
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SHA256
830911c62e119f783336370841718d96c5fffa236ec485b434b6de7dcaf6c46b
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SHA512
5472b8b4a98513c7aad5d98c1522439d3d48e054f6b4490bdee9698fcff48a3570d1bd1c7d4c2571c5584b9abf9e34db3060dd215895e856368f8fd26912e941
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SSDEEP
24576:NWhpLZFBqScHobQ3EJEYFrk5FNQDdJVlDGUCbs+trje6B/F5b1ygR:N2pLZ3qScUQ3EJEYFrkufVlDGN4qVy
Static task
static1
Behavioral task
behavioral1
Sample
SubZeroTempSpoofer.exe
Resource
win10v2004-20231215-en
Malware Config
Targets
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Target
SubZeroTempSpoofer.exe
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Size
1.6MB
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MD5
052449d155e679a80df0061fcc93e502
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SHA1
b09e4fe7002c193cf42ba4da2499b77ae561c457
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SHA256
830911c62e119f783336370841718d96c5fffa236ec485b434b6de7dcaf6c46b
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SHA512
5472b8b4a98513c7aad5d98c1522439d3d48e054f6b4490bdee9698fcff48a3570d1bd1c7d4c2571c5584b9abf9e34db3060dd215895e856368f8fd26912e941
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SSDEEP
24576:NWhpLZFBqScHobQ3EJEYFrk5FNQDdJVlDGUCbs+trje6B/F5b1ygR:N2pLZ3qScUQ3EJEYFrkufVlDGN4qVy
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Deletes NTFS Change Journal
The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.
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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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Sets service image path in registry
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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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Drops desktop.ini file(s)
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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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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Matrix ATT&CK v13
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
Indicator Removal
2File Deletion
2Virtualization/Sandbox Evasion
1Modify Registry
2