General
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Target
Bootstrapper.exe
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Size
796KB
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Sample
240819-bmkr8ayhkr
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MD5
76639ab92661f5c384302899934051ab
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SHA1
9b33828f8ad3a686ff02b1a4569b8ae38128caed
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SHA256
6bb9ad960bcc9010db1b9918369bdfc4558f19287b5b6562079c610a28320178
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SHA512
928e4374c087070f8a6786f9082f05a866751ea877edf9afa23f6941dfc4d6762e1688bbb135788d6286ec324fa117fc60b46fed2f6e3a4ab059465a00f2ebee
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SSDEEP
12288:THeLH6iTPSE54sgweI9oaQJj3r+piq+77xOZ+eMm:THeLHdTSEeyoaQJj3Spiq+77xd
Static task
static1
Malware Config
Targets
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Target
Bootstrapper.exe
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Size
796KB
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MD5
76639ab92661f5c384302899934051ab
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SHA1
9b33828f8ad3a686ff02b1a4569b8ae38128caed
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SHA256
6bb9ad960bcc9010db1b9918369bdfc4558f19287b5b6562079c610a28320178
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SHA512
928e4374c087070f8a6786f9082f05a866751ea877edf9afa23f6941dfc4d6762e1688bbb135788d6286ec324fa117fc60b46fed2f6e3a4ab059465a00f2ebee
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SSDEEP
12288:THeLH6iTPSE54sgweI9oaQJj3r+piq+77xOZ+eMm:THeLHdTSEeyoaQJj3Spiq+77xd
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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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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Blocklisted process makes network request
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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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Suspicious use of NtSetInformationThreadHideFromDebugger
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