General
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Target
2024-05-29_bd3a3cee39a243434acd1cad38917ba2_neshta_phobos
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Size
96KB
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Sample
240529-1gscjsag2y
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MD5
bd3a3cee39a243434acd1cad38917ba2
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SHA1
f1883c43e470de35631e2b8c2852bcc7d746d253
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SHA256
9041c67107c047a0e65c1e8b0c831f4f5f4cfb3731550044f86909e475dd0c64
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SHA512
f6524e70ad6224a241c376b58a3898e676b3aee9583f81bfe18ee56a565bcfbec47c0be84d1c4a1485bb21058ca4d4d3dc080d55cdbea8dcf08ec5de84cd2a6e
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SSDEEP
1536:JxqjQ+P04wsmJC5VxjsFFmcpNeRBl5PT/rx1mzwRMSTdLpJLM:sr85CS7m8QRrmzwR5J4
Behavioral task
behavioral1
Sample
2024-05-29_bd3a3cee39a243434acd1cad38917ba2_neshta_phobos.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-29_bd3a3cee39a243434acd1cad38917ba2_neshta_phobos.exe
Resource
win10v2004-20240508-en
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
2024-05-29_bd3a3cee39a243434acd1cad38917ba2_neshta_phobos
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Size
96KB
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MD5
bd3a3cee39a243434acd1cad38917ba2
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SHA1
f1883c43e470de35631e2b8c2852bcc7d746d253
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SHA256
9041c67107c047a0e65c1e8b0c831f4f5f4cfb3731550044f86909e475dd0c64
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SHA512
f6524e70ad6224a241c376b58a3898e676b3aee9583f81bfe18ee56a565bcfbec47c0be84d1c4a1485bb21058ca4d4d3dc080d55cdbea8dcf08ec5de84cd2a6e
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SSDEEP
1536:JxqjQ+P04wsmJC5VxjsFFmcpNeRBl5PT/rx1mzwRMSTdLpJLM:sr85CS7m8QRrmzwR5J4
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Detect Neshta payload
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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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 (324) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Modifies Windows Firewall
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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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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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Drops desktop.ini file(s)
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Indicator Removal
3File Deletion
3Modify Registry
3