General
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Target
MrsMajor 3.0.exe
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Size
381KB
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Sample
231021-zhbwhsbf95
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MD5
35a27d088cd5be278629fae37d464182
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SHA1
d5a291fadead1f2a0cf35082012fe6f4bf22a3ab
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SHA256
4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
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SHA512
eb0be3026321864bd5bcf53b88dc951711d8c0b4bcbd46800b90ca5116a56dba22452530e29f3ccbbcc43d943bdefc8ed8ca2d31ba2e7e5f0e594f74adba4ab5
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SSDEEP
6144:Th3idhONY259BH1DzJ5PzVNtGgc+F9TBd096cTKAsLEbqqbd+VWM8AHiKn9SlXNA:Th3iXPw9Tc6kVXMHHLEf8l7
Static task
static1
Behavioral task
behavioral1
Sample
MrsMajor 3.0.exe
Resource
win10-20231020-en
Malware Config
Targets
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Target
MrsMajor 3.0.exe
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Size
381KB
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MD5
35a27d088cd5be278629fae37d464182
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SHA1
d5a291fadead1f2a0cf35082012fe6f4bf22a3ab
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SHA256
4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
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SHA512
eb0be3026321864bd5bcf53b88dc951711d8c0b4bcbd46800b90ca5116a56dba22452530e29f3ccbbcc43d943bdefc8ed8ca2d31ba2e7e5f0e594f74adba4ab5
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SSDEEP
6144:Th3idhONY259BH1DzJ5PzVNtGgc+F9TBd096cTKAsLEbqqbd+VWM8AHiKn9SlXNA:Th3iXPw9Tc6kVXMHHLEf8l7
Score10/10-
Drops file in Drivers directory
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Executes dropped EXE
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Loads dropped DLL
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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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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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Drops file in System32 directory
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Modifies termsrv.dll
Commonly used to allow simultaneous RDP sessions.
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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
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Pre-OS Boot
1Bootkit
1