General
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Target
2024-05-11_29526f77e20b03dbe64c7af03aca394b_neshta_phobos
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Size
96KB
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Sample
240511-arn5rsdc84
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MD5
29526f77e20b03dbe64c7af03aca394b
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SHA1
861def2a6797ac09a444f04f84ed24a3bdda29af
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SHA256
7bac783906e85440e958c7829b5829f9e8eed33fdc4253d497db45f8c93a5e24
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SHA512
16960298e2924988bfcb4c8b45e6946f10c4c100fedc18a380d1d6556245041f3ef627f07a956625b85a1f74169ee6717b94acda6d4234e5b9ef74a6d97293de
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SSDEEP
1536:JxqjQ+P04wsmJCPLuVDZcPpS2XZNeRBl5PT/rx1mzwRMSTdLpJcM:sr85CPLa9/8QRrmzwR5JJ
Behavioral task
behavioral1
Sample
2024-05-11_29526f77e20b03dbe64c7af03aca394b_neshta_phobos.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-11_29526f77e20b03dbe64c7af03aca394b_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
2024-05-11_29526f77e20b03dbe64c7af03aca394b_neshta_phobos
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Size
96KB
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MD5
29526f77e20b03dbe64c7af03aca394b
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SHA1
861def2a6797ac09a444f04f84ed24a3bdda29af
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SHA256
7bac783906e85440e958c7829b5829f9e8eed33fdc4253d497db45f8c93a5e24
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SHA512
16960298e2924988bfcb4c8b45e6946f10c4c100fedc18a380d1d6556245041f3ef627f07a956625b85a1f74169ee6717b94acda6d4234e5b9ef74a6d97293de
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SSDEEP
1536:JxqjQ+P04wsmJCPLuVDZcPpS2XZNeRBl5PT/rx1mzwRMSTdLpJcM:sr85CPLa9/8QRrmzwR5JJ
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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 (319) 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