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General
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Target
Microsoftcrypt.exe
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Size
2.7MB
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Sample
240524-ecdgyabh3z
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MD5
6daeeadf00855bb08838f08c38c70f37
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SHA1
c03525bd823f27a3e2acb8fe95f77d73327aca9d
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SHA256
109dab92d97421b95132798bcb3fbd2f0194d52426601fe21f1f1d0e77431bd7
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SHA512
7b8213e2fa44edb2e1999b17e199e6f72f048129879d4eb5d1a9d2cb6bf207adc7de9596aa5e6a58a56fa5ad74fe88a8cd7cb79c2176170b7ca061bb2983f61f
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SSDEEP
49152:lxJhUIEUjke9UjgcwX4ZKqg2OPf6nAPM0NJ7w4U5i3pMFadI8qKq2LIj680f1ZT4:lZIgUjbwIZzQiA08J7w/i32MC89mj68h
Static task
static1
Behavioral task
behavioral1
Sample
Microsoftcrypt.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Microsoftcrypt.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
Microsoftcrypt.exe
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Size
2.7MB
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MD5
6daeeadf00855bb08838f08c38c70f37
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SHA1
c03525bd823f27a3e2acb8fe95f77d73327aca9d
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SHA256
109dab92d97421b95132798bcb3fbd2f0194d52426601fe21f1f1d0e77431bd7
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SHA512
7b8213e2fa44edb2e1999b17e199e6f72f048129879d4eb5d1a9d2cb6bf207adc7de9596aa5e6a58a56fa5ad74fe88a8cd7cb79c2176170b7ca061bb2983f61f
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SSDEEP
49152:lxJhUIEUjke9UjgcwX4ZKqg2OPf6nAPM0NJ7w4U5i3pMFadI8qKq2LIj680f1ZT4:lZIgUjbwIZzQiA08J7w/i32MC89mj68h
Score10/10-
Modifies security service
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Creates new service(s)
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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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Executes dropped EXE
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Loads dropped DLL
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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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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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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1System Services
2Service Execution
2Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3