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General
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Target
2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock
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Size
592KB
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Sample
240429-xerrfshg86
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MD5
20753ce69b2f6bb82b52c68c8e8efc92
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SHA1
ed7105985b3371658a9b9fdd8b6c03bf7b605515
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SHA256
0b2c75227acf156578d1e09a908f2cef39b5b937f4aef79952c4cf9e486f25ed
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SHA512
67043f0cc2c84703ac6200d0ccc5ab02f39632cba9ccb1ac5d97522ec8629968efeeed5020ea1f32f2aed688053712a4ad2a22ef7f47adb473e0eda9c1398559
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SSDEEP
12288:USIE2jq4eCjdhkRjmhCVVt7f8GlHnHwNINVoZzx8Z0rsfmYID1:mWDRtVYAVoZzx8arsfmT1
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock
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Size
592KB
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MD5
20753ce69b2f6bb82b52c68c8e8efc92
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SHA1
ed7105985b3371658a9b9fdd8b6c03bf7b605515
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SHA256
0b2c75227acf156578d1e09a908f2cef39b5b937f4aef79952c4cf9e486f25ed
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SHA512
67043f0cc2c84703ac6200d0ccc5ab02f39632cba9ccb1ac5d97522ec8629968efeeed5020ea1f32f2aed688053712a4ad2a22ef7f47adb473e0eda9c1398559
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SSDEEP
12288:USIE2jq4eCjdhkRjmhCVVt7f8GlHnHwNINVoZzx8Z0rsfmYID1:mWDRtVYAVoZzx8arsfmT1
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (63) 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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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1