General
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Target
Killer.exe
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Size
30.1MB
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Sample
240727-khmkpazhmg
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MD5
3d8a1274c158597b5f19a3a5e3585359
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SHA1
2e230262da6e67c3453f3a27d71f85368db28797
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SHA256
86b81bf7f83767c4934acaacdc5969d71c3ba8d897447993a4a6ebaaf23dfb6b
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SHA512
76031a816caa45a30d4cc14299b4d5b61a63f829212239db53e616e93503da62589c1fc4c62e16dec7e9d9ef4b7fb997ada6ea3d471585a5ee6ec57ad0ef9f29
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SSDEEP
786432:bCG6YUg4E4NakUtnEfz7vr85ienl0Zsgf68S1eQ/7:GG6YU1E4NNY5grS1eQ/7
Static task
static1
Behavioral task
behavioral1
Sample
Killer.exe
Resource
win7-20240705-en
Malware Config
Extracted
C:\Users\Admin\Documents\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn
Targets
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Target
Killer.exe
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Size
30.1MB
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MD5
3d8a1274c158597b5f19a3a5e3585359
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SHA1
2e230262da6e67c3453f3a27d71f85368db28797
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SHA256
86b81bf7f83767c4934acaacdc5969d71c3ba8d897447993a4a6ebaaf23dfb6b
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SHA512
76031a816caa45a30d4cc14299b4d5b61a63f829212239db53e616e93503da62589c1fc4c62e16dec7e9d9ef4b7fb997ada6ea3d471585a5ee6ec57ad0ef9f29
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SSDEEP
786432:bCG6YUg4E4NakUtnEfz7vr85ienl0Zsgf68S1eQ/7:GG6YU1E4NNY5grS1eQ/7
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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XMRig Miner payload
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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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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Loads dropped DLL
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Modifies file permissions
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File and Directory Permissions Modification: Windows File and Directory Permissions Modification
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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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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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System Binary Proxy Execution: Verclsid
Adversaries may abuse Verclsid to proxy execution of malicious code.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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AutoIT Executable
AutoIT scripts compiled to PE executables.
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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
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
2Windows File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1System Binary Proxy Execution
1Verclsid
1Virtualization/Sandbox Evasion
2