General
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Target
_)01( noci.scr
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Size
262KB
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Sample
240719-mmfztawfrr
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MD5
e15358f77cb2d9a8f36300cd621cc68a
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SHA1
168edfcabe08c67c7741d14a7f0cf926d846478b
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SHA256
e8ca6295f91a857411273eea2fcf03989fc93f13f84c3cf2180bf556c89436d0
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SHA512
debe87f0305ffcfae37d15edaa18287ec7ecd77a72bd585edf914bd9390db6dafe51c48beca6f1e6eef15f57967083516a250e1352c4746c704bab32d4fc86d1
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SSDEEP
3072:HCk4Tq9ml9Zbgb1B+i1GlCdE4SrC1OMSn0vJAnR7Nn7ILJPopnWaGR8lJnHwCBF4:HJ4Tq9uPghIDN4unQ59P8WaomJBhnod
Behavioral task
behavioral1
Sample
_)01( noci.scr
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
_)01( noci.scr
Resource
win10v2004-20240704-en
Malware Config
Extracted
C:\ProgramData\Adobe\Updater6\read_it.txt
Targets
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Target
_)01( noci.scr
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Size
262KB
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MD5
e15358f77cb2d9a8f36300cd621cc68a
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SHA1
168edfcabe08c67c7741d14a7f0cf926d846478b
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SHA256
e8ca6295f91a857411273eea2fcf03989fc93f13f84c3cf2180bf556c89436d0
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SHA512
debe87f0305ffcfae37d15edaa18287ec7ecd77a72bd585edf914bd9390db6dafe51c48beca6f1e6eef15f57967083516a250e1352c4746c704bab32d4fc86d1
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SSDEEP
3072:HCk4Tq9ml9Zbgb1B+i1GlCdE4SrC1OMSn0vJAnR7Nn7ILJPopnWaGR8lJnHwCBF4:HJ4Tq9uPghIDN4unQ59P8WaomJBhnod
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Chaos Ransomware
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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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Disables Task Manager via 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 startup file
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Executes dropped EXE
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Adds Run key to start application
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Drops desktop.ini file(s)
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Sets desktop wallpaper using registry
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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