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 Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Change Default File Association
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Indicator Removal
3File Deletion
3Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
3