Analysis Overview
SHA256
a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2
Threat Level: Known bad
The file a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2 was found to be: Known bad.
Malicious Activity Summary
Neshta family
Neshta
Modifies system executable filetype association
Detect Neshta payload
Executes dropped EXE
Checks computer location settings
Reads user/profile data of web browsers
Loads dropped DLL
Drops file in Windows directory
Drops file in Program Files directory
Program crash
Enumerates physical storage devices
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-01 17:58
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Neshta family
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-01 17:58
Reported
2022-10-01 18:11
Platform
win7-20220812-en
Max time kernel
174s
Max time network
48s
Command Line
Signatures
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Neshta
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Reads user/profile data of web browsers
Drops file in Program Files directory
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\svchost.com | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
"C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe"
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 536
Network
Files
memory/1908-54-0x0000000075B11000-0x0000000075B13000-memory.dmp
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
memory/1780-57-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
memory/1780-60-0x0000000000D80000-0x0000000000E64000-memory.dmp
memory/1432-61-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
| MD5 | 9e2b9928c89a9d0da1d3e8f4bd96afa7 |
| SHA1 | ec66cda99f44b62470c6930e5afda061579cde35 |
| SHA256 | 8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043 |
| SHA512 | 2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-01 17:58
Reported
2022-10-01 18:11
Platform
win10v2004-20220812-en
Max time kernel
183s
Max time network
194s
Command Line
Signatures
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Neshta
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Reads user/profile data of web browsers
Drops file in Program Files directory
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\svchost.com | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
"C:\Users\Admin\AppData\Local\Temp\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe"
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4840 -ip 4840
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 808
Network
| Country | Destination | Domain | Proto |
| NL | 178.79.208.1:80 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
memory/4840-132-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\3582-490\a2df3791fce928acc910aa951a52e89ad3667f93cca9956ba9d3fa2b27c3d8d2.exe
| MD5 | 273371bb81fe2b644a5b501a20c7a485 |
| SHA1 | a87a66f9a69e5fa1ae5acd7787b67db1af589d2c |
| SHA256 | 4136d6fb3b815dfacc27230eb5242121a3b0f4a75b881e359a94a81fa71e1516 |
| SHA512 | 6e7ab9bc5d10182397367b442d85d0c27b2f1f2786fc409ac3e02fbd2fc544f9060ffd621e2f3c80d952d02b840c2770b26770d1da43b109470f6ac407449d51 |
memory/4840-135-0x0000000000920000-0x0000000000A04000-memory.dmp