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 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