General
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Target
2024-06-11_bfe1134aa647e0eae3fd8e4093dcc788_neshta_phobos
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Size
98KB
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Sample
240611-janmcayfjb
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MD5
bfe1134aa647e0eae3fd8e4093dcc788
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SHA1
945c30a53c5bcb384cc885f72028c91870a0d34f
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SHA256
458a7a345bc015a7585d114b98d3ef9077a571a72ada9b4f07d385b44f7119c7
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SHA512
bcc6beb5311a8c8280903cac569259279f73ba4f5e4a722559b366930520597362ee9b45c16d32fc13817327a89ca0d1985f7df00ebd3093da6768f32564e2ca
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SSDEEP
1536:JxqjQ+P04wsmJCuxbV4DzANeRBl5PT/rx1mzwRMSTdLpJOM:sr85C/4QRrmzwR5JL
Behavioral task
behavioral1
Sample
2024-06-11_bfe1134aa647e0eae3fd8e4093dcc788_neshta_phobos.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_bfe1134aa647e0eae3fd8e4093dcc788_neshta_phobos.exe
Resource
win10v2004-20240508-en
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
class='mark'>[email protected]</span>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
2024-06-11_bfe1134aa647e0eae3fd8e4093dcc788_neshta_phobos
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Size
98KB
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MD5
bfe1134aa647e0eae3fd8e4093dcc788
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SHA1
945c30a53c5bcb384cc885f72028c91870a0d34f
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SHA256
458a7a345bc015a7585d114b98d3ef9077a571a72ada9b4f07d385b44f7119c7
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SHA512
bcc6beb5311a8c8280903cac569259279f73ba4f5e4a722559b366930520597362ee9b45c16d32fc13817327a89ca0d1985f7df00ebd3093da6768f32564e2ca
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SSDEEP
1536:JxqjQ+P04wsmJCuxbV4DzANeRBl5PT/rx1mzwRMSTdLpJOM:sr85C/4QRrmzwR5JL
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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 (310) 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