General
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Target
2024-11-06_71766d2b85aa62591e714962aeaa47c4_virlock
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Size
2.3MB
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Sample
241106-dqkmqswmep
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MD5
71766d2b85aa62591e714962aeaa47c4
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SHA1
dccd3609d375eda4cead7b75f7de4b5b246707cf
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SHA256
7b59b9179a11cbbccdca91c6601ba51ebf843af6c7d0f3693cbd4f96dc097e0e
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SHA512
cccd3e3678aa315750cbdf5abe009405144b64685c2824fb8abbe95e6d1c87255ece077a49406a68d59d35b1872a936f92403e57249049fb6ed5047f20ecf8ad
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SSDEEP
49152:bjvutG3Pcvykn1/Mi7wnNvXp6TMJM0QmZ:bjvu8cvy01hCv7NQm
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-06_71766d2b85aa62591e714962aeaa47c4_virlock.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-11-06_71766d2b85aa62591e714962aeaa47c4_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-11-06_71766d2b85aa62591e714962aeaa47c4_virlock
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Size
2.3MB
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MD5
71766d2b85aa62591e714962aeaa47c4
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SHA1
dccd3609d375eda4cead7b75f7de4b5b246707cf
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SHA256
7b59b9179a11cbbccdca91c6601ba51ebf843af6c7d0f3693cbd4f96dc097e0e
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SHA512
cccd3e3678aa315750cbdf5abe009405144b64685c2824fb8abbe95e6d1c87255ece077a49406a68d59d35b1872a936f92403e57249049fb6ed5047f20ecf8ad
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SSDEEP
49152:bjvutG3Pcvykn1/Mi7wnNvXp6TMJM0QmZ:bjvu8cvy01hCv7NQm
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Modifies WinLogon for persistence
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Modifies visibility of file extensions in Explorer
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Renames multiple (56) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
7Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1