General
- Target Bootstrapper.exe
- Size 3.5MB
- Sample260627-thephscs7p
- SHA256 a958590ad4a3505caf86fa8f473dc4ff11081d8b03b0cf850efece9e00a9dd96
- MD5 a5b2b44bee8533b903877fbf5538f3d6
- SHA1 b8d1b2c836358215fdd0da611e042de1dde11751
- SHA512 5eea50aec1b09a542ed611e39e8425ff78de92d47962438ad7ec9649ae5d650d4bb663107d6d1b2de73196ec2667072f4ed98cdefb5a94f2086dc3255237ebe0
- SSDEEP 98304:q1ojI+B7crZMj0IBP4WNiKvhMGIYqopMfcf9ho:rMSmqjbP4HKvMxcf
- TLSH T1C50633D6CBC25E55C3FE637309BAA98F4EC9565EC658464CA81948EF02431F0DE17F0A
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
Bootstrapper.exe
Resource
win11-20260513-en
24 signatures
150 seconds
Malware Config
Targets
-
- Target Bootstrapper.exe
- Size 3.5MB
- SHA256 a958590ad4a3505caf86fa8f473dc4ff11081d8b03b0cf850efece9e00a9dd96
- MD5 a5b2b44bee8533b903877fbf5538f3d6
- SHA1 b8d1b2c836358215fdd0da611e042de1dde11751
- SHA512 5eea50aec1b09a542ed611e39e8425ff78de92d47962438ad7ec9649ae5d650d4bb663107d6d1b2de73196ec2667072f4ed98cdefb5a94f2086dc3255237ebe0
- SSDEEP 98304:q1ojI+B7crZMj0IBP4WNiKvhMGIYqopMfcf9ho:rMSmqjbP4HKvMxcf
- TLSH T1C50633D6CBC25E55C3FE637309BAA98F4EC9565EC658464CA81948EF02431F0DE17F0A
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Identifies VirtualBox via ACPI registry values (likely anti-VM)
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Executes dropped EXE
-
Checks whether UAC is enabled
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Suspicious use of NtSetInformationThreadHideFromDebugger
MITRE ATT&CK Enterprise v16
Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Virtualization/Sandbox Evasion
1