General
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Target
MBSetup.exe
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Size
2.5MB
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Sample
240823-m66dtasgqk
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MD5
d21bf3852bb27fb6f5459d2cf2bcd51c
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SHA1
e59309bbe58c9584517e4bb50ff499dffb29d7b0
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SHA256
de9c4e8b4b0c756eee4e39221c1e4e0e11c2e67effb828e27de3c4b4470ccff2
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SHA512
17bc7740f131a1d4e84fd7e4ab5e1ce510660f5046340ef6d09ef99c56c88da2b6be3ae5c5ddb7213841c506eaec147c65abba1a7a2a8eb4fb8f6329bbaa03d1
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SSDEEP
49152:FMofPlPU+QG/rOVcVz6StQyfvE0Z3R0nxiIq2dsTDwfw1Y:FMslc+QGjuTKtQRq261Y
Static task
static1
Behavioral task
behavioral1
Sample
MBSetup.exe
Resource
win10v2004-20240802-en
Malware Config
Extracted
C:\Users\Admin\Downloads\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Targets
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Target
MBSetup.exe
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Size
2.5MB
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MD5
d21bf3852bb27fb6f5459d2cf2bcd51c
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SHA1
e59309bbe58c9584517e4bb50ff499dffb29d7b0
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SHA256
de9c4e8b4b0c756eee4e39221c1e4e0e11c2e67effb828e27de3c4b4470ccff2
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SHA512
17bc7740f131a1d4e84fd7e4ab5e1ce510660f5046340ef6d09ef99c56c88da2b6be3ae5c5ddb7213841c506eaec147c65abba1a7a2a8eb4fb8f6329bbaa03d1
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SSDEEP
49152:FMofPlPU+QG/rOVcVz6StQyfvE0Z3R0nxiIq2dsTDwfw1Y:FMslc+QGjuTKtQRq261Y
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Drops file in Drivers directory
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Modifies RDP port number used by Windows
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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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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Drops startup file
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Impair Defenses: Safe Mode Boot
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Modifies file permissions
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Downloads MZ/PE file
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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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File and Directory Permissions Modification: Windows File and Directory Permissions Modification
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Legitimate hosting services abused for malware hosting/C2
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Boot or Logon Autostart Execution: Authentication Package
Suspicious Windows Authentication Registry Modification.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops file in System32 directory
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Modifies WinLogon for persistence
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Authentication Package
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
3Authentication Package
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
File and Directory Permissions Modification
2Windows File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Safe Mode Boot
1Indicator Removal
1File Deletion
1Modify Registry
5Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1