Analysis Overview
SHA256
42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff
Threat Level: Known bad
The file 42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff was found to be: Known bad.
Malicious Activity Summary
Detect Neshta payload
Neshta
Neshta family
Checks computer location settings
Executes dropped EXE
Modifies system executable filetype association
Loads dropped DLL
Reads user/profile data of web browsers
Drops file in Program Files directory
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-15 20:54
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Neshta family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-15 20:54
Reported
2024-06-15 20:56
Platform
win7-20240508-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Neshta
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
Enumerates physical storage devices
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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
"C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe"
C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2456 -s 200
Network
Files
\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
| MD5 | 097ef461416ef7a636b531c236460320 |
| SHA1 | b65b98f0777debce1c538f105785266c810ae11d |
| SHA256 | 1c56b57bf7e2f4b870e25331271204067520a4d1d449f020ffe209378ab78bc3 |
| SHA512 | 0a47931dd460eb508a89502c629c847b8198d02e938d19af61984c9a48a70e47a5ed2cc00ea561bf64d2fd844505da6cc1f466e1eaf2761b557c5fb829dde130 |
C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe
| MD5 | cf6c595d3e5e9667667af096762fd9c4 |
| SHA1 | 9bb44da8d7f6457099cb56e4f7d1026963dce7ce |
| SHA256 | 593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d |
| SHA512 | ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80 |
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
| MD5 | 9e2b9928c89a9d0da1d3e8f4bd96afa7 |
| SHA1 | ec66cda99f44b62470c6930e5afda061579cde35 |
| SHA256 | 8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043 |
| SHA512 | 2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156 |
memory/2892-90-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2892-92-0x0000000000400000-0x000000000041B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-15 20:54
Reported
2024-06-15 20:56
Platform
win10v2004-20240508-en
Max time kernel
52s
Max time network
51s
Command Line
Signatures
Detect Neshta payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Neshta
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
Enumerates physical storage devices
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\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4720 wrote to memory of 4328 | N/A | C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe |
| PID 4720 wrote to memory of 4328 | N/A | C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe | C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
"C:\Users\Admin\AppData\Local\Temp\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe"
C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\3582-490\42b989843c42042c84d7b72b9d5564323f9eae47c3e762ed6cff0fee5dab01ff.exe
| MD5 | 097ef461416ef7a636b531c236460320 |
| SHA1 | b65b98f0777debce1c538f105785266c810ae11d |
| SHA256 | 1c56b57bf7e2f4b870e25331271204067520a4d1d449f020ffe209378ab78bc3 |
| SHA512 | 0a47931dd460eb508a89502c629c847b8198d02e938d19af61984c9a48a70e47a5ed2cc00ea561bf64d2fd844505da6cc1f466e1eaf2761b557c5fb829dde130 |
C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
| MD5 | 3b73078a714bf61d1c19ebc3afc0e454 |
| SHA1 | 9abeabd74613a2f533e2244c9ee6f967188e4e7e |
| SHA256 | ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29 |
| SHA512 | 75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4 |
memory/4720-98-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4720-99-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4720-101-0x0000000000400000-0x000000000041B000-memory.dmp