General
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Target
2024-04-06_08c1c8eebe5795d0e7f09a60409e3aea_neshta_phobos
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Size
96KB
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Sample
240406-dzgx7sad63
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MD5
08c1c8eebe5795d0e7f09a60409e3aea
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SHA1
7f2ad6377abdb4e0e98690e80757c51586af5d15
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SHA256
4298b05c5e91df02d71d2fd037a36230a94ae35c3674d31e25c4dd8cfba358a6
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SHA512
48e90fb1b002aab6bebc868ce8d082d65b5801abf6c298ff93919e5f0015fc0e71be5471e339728f4aabc94086ffc31a7caabe3c7c361c405fd01d5a886028cc
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SSDEEP
1536:JxqjQ+P04wsmJCOeV7RSkjvrCZNeRBl5PT/rx1mzwRMSTdLpJqM:sr85COeVtSrQRrmzwR5Jv
Behavioral task
behavioral1
Sample
2024-04-06_08c1c8eebe5795d0e7f09a60409e3aea_neshta_phobos.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-06_08c1c8eebe5795d0e7f09a60409e3aea_neshta_phobos.exe
Resource
win10v2004-20240226-en
Malware Config
Extracted
C:\info.hta
class='mark'>versacee@tuta.io</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
class='mark'>versacee@tuta.io</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
2024-04-06_08c1c8eebe5795d0e7f09a60409e3aea_neshta_phobos
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Size
96KB
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MD5
08c1c8eebe5795d0e7f09a60409e3aea
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SHA1
7f2ad6377abdb4e0e98690e80757c51586af5d15
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SHA256
4298b05c5e91df02d71d2fd037a36230a94ae35c3674d31e25c4dd8cfba358a6
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SHA512
48e90fb1b002aab6bebc868ce8d082d65b5801abf6c298ff93919e5f0015fc0e71be5471e339728f4aabc94086ffc31a7caabe3c7c361c405fd01d5a886028cc
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SSDEEP
1536:JxqjQ+P04wsmJCOeV7RSkjvrCZNeRBl5PT/rx1mzwRMSTdLpJqM:sr85COeVtSrQRrmzwR5Jv
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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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Modifies boot configuration data using bcdedit
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Renames multiple (318) 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