General
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Target
2024-04-06_46a636a045d2e748e5f93845446ccf89_neshta_phobos
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Size
96KB
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Sample
240406-qscfcsca64
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MD5
46a636a045d2e748e5f93845446ccf89
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SHA1
ae5aaab4f2d0c0a570f8de713cdb9251a566ee66
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SHA256
8107b9fc4dcb6065fe1845bc7d1109409ee7977e99b3eb26367cc0500f15f962
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SHA512
a37a4907798a6c45fe2aa18e7a092749f8823044b6eb1a410cb1d0f1b2624ad4aeeea7ba7a41b6cd04c9d7ab156a0d25f6bedb592745b8435fcd4607dcf4498a
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SSDEEP
1536:JxqjQ+P04wsmJCzE2lYkh8TpNeRBl5PT/rx1mzwRMSTdLpJwM:sr85CDhGQRrmzwR5JV
Behavioral task
behavioral1
Sample
2024-04-06_46a636a045d2e748e5f93845446ccf89_neshta_phobos.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-06_46a636a045d2e748e5f93845446ccf89_neshta_phobos.exe
Resource
win10v2004-20240319-en
Malware Config
Extracted
C:\info.hta
class='mark'>shonpen@mailfence.com</span></div>
class='mark'>petinjon@gmail.com</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
class='mark'>shonpen@mailfence.com</span></div>
class='mark'>petinjon@gmail.com</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Targets
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Target
2024-04-06_46a636a045d2e748e5f93845446ccf89_neshta_phobos
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Size
96KB
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MD5
46a636a045d2e748e5f93845446ccf89
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SHA1
ae5aaab4f2d0c0a570f8de713cdb9251a566ee66
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SHA256
8107b9fc4dcb6065fe1845bc7d1109409ee7977e99b3eb26367cc0500f15f962
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SHA512
a37a4907798a6c45fe2aa18e7a092749f8823044b6eb1a410cb1d0f1b2624ad4aeeea7ba7a41b6cd04c9d7ab156a0d25f6bedb592745b8435fcd4607dcf4498a
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SSDEEP
1536:JxqjQ+P04wsmJCzE2lYkh8TpNeRBl5PT/rx1mzwRMSTdLpJwM:sr85CDhGQRrmzwR5JV
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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 (312) 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