General
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Target
2024-05-04_7907f67bcc22fc4cf5591c70eb12cde6_neshta_phobos
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Size
96KB
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Sample
240504-xqzw7saf82
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MD5
7907f67bcc22fc4cf5591c70eb12cde6
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SHA1
494fc9cbf96b0a29b5c30cd651934d29bbd732e8
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SHA256
6a1c2727bfb7c7607f7c83ce83a4e8963d0fbe323db95fc08bba469d2f6803c7
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SHA512
7a4211a8cf33b6b52bd7950924d72345c124cad952e6e82d827a244e5c6d3ecf1bff5908b610a71468dc2e835b2416ecf995d8133e8b62fd75c08095fd4c2ffd
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SSDEEP
1536:JxqjQ+P04wsmJC6BzvsrKb5+RIeRBzhCba5sdgNeRBl5PT/rx1mzwRMSTdLpJxM:sr85C/Kwum1ps2QRrmzwR5J2
Behavioral task
behavioral1
Sample
2024-05-04_7907f67bcc22fc4cf5591c70eb12cde6_neshta_phobos.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-04_7907f67bcc22fc4cf5591c70eb12cde6_neshta_phobos.exe
Resource
win10v2004-20240419-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
2024-05-04_7907f67bcc22fc4cf5591c70eb12cde6_neshta_phobos
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Size
96KB
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MD5
7907f67bcc22fc4cf5591c70eb12cde6
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SHA1
494fc9cbf96b0a29b5c30cd651934d29bbd732e8
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SHA256
6a1c2727bfb7c7607f7c83ce83a4e8963d0fbe323db95fc08bba469d2f6803c7
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SHA512
7a4211a8cf33b6b52bd7950924d72345c124cad952e6e82d827a244e5c6d3ecf1bff5908b610a71468dc2e835b2416ecf995d8133e8b62fd75c08095fd4c2ffd
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SSDEEP
1536:JxqjQ+P04wsmJC6BzvsrKb5+RIeRBzhCba5sdgNeRBl5PT/rx1mzwRMSTdLpJxM:sr85C/Kwum1ps2QRrmzwR5J2
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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 (309) 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