General
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Target
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679.bin.sample
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Size
422KB
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Sample
240814-m42b3sycpg
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MD5
f736ee661d70a5d7aa322f017e04b1d2
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SHA1
eee99e6b7c58ecc95c75cd52eb7ac02d812c1a54
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SHA256
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679
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SHA512
23ff1b49955354a9a882ca2fd884157f75d937f00be2928acebab2a01fddcd018159cfd85df0e890cb2ecc0e40e6a02be926db29418928b320517ea6b538c8b8
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SSDEEP
6144:MTqhlztbElkd+s0zyykmkkES0J2txMLVesCjuwptsOXNZcX9PNCFR09KKPOeFhbb:RhDdkybr/J2tx2VeFusZXQJhkeFhbb
Static task
static1
Behavioral task
behavioral1
Sample
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679.bin.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679.bin.exe
Resource
win10v2004-20240802-en
Malware Config
Extracted
C:\How_to_back_files.html
medusalocker
Targets
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Target
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679.bin.sample
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Size
422KB
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MD5
f736ee661d70a5d7aa322f017e04b1d2
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SHA1
eee99e6b7c58ecc95c75cd52eb7ac02d812c1a54
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SHA256
ce746a36f0e85da2b5a1c4ab72c78d048612a9e68968e734d962a071e0c65679
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SHA512
23ff1b49955354a9a882ca2fd884157f75d937f00be2928acebab2a01fddcd018159cfd85df0e890cb2ecc0e40e6a02be926db29418928b320517ea6b538c8b8
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SSDEEP
6144:MTqhlztbElkd+s0zyykmkkES0J2txMLVesCjuwptsOXNZcX9PNCFR09KKPOeFhbb:RhDdkybr/J2tx2VeFusZXQJhkeFhbb
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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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Modifies boot configuration data using bcdedit
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Renames multiple (186) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Adds Run key to start application
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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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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2