Analysis Overview
SHA256
8b03a03fab5823b2c1d25512f55cc08452fb3a8fda6c83c53bbba7bbdb6bc42e
Threat Level: Shows suspicious behavior
The file 8fe72633f6b0fb3ab0e91047b9e9dfc7 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Checks computer location settings
Deletes itself
Installs/modifies Browser Helper Object
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-04 18:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-04 18:56
Reported
2024-02-04 18:58
Platform
win10v2004-20231215-en
Max time kernel
143s
Max time network
151s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{e3a729da-eabc-df50-1842-dfd682644311} | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\mswapi.dll | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311} | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32\ = "C:\\Windows\\SysWow64\\mswapi.dll" | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\script = 18b449998991e1c3e4419ec72743b4d1b41bc098362d58e33d16a18321fe2c6d846ec0 | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1916 wrote to memory of 1212 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1916 wrote to memory of 1212 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1916 wrote to memory of 1212 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe
"C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delt.bat" "
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 61.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 177.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.179.89.13.in-addr.arpa | udp |
Files
memory/1916-0-0x0000000000510000-0x0000000000519000-memory.dmp
memory/1916-3-0x00000000001C0000-0x00000000001C7000-memory.dmp
memory/1916-6-0x0000000000510000-0x0000000000519000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\delt.bat
| MD5 | f73a3b3d034e62ea99d1f4e01b6cb41e |
| SHA1 | 22f63a73d1d28de7270fb6615c0d0059b5043f7c |
| SHA256 | 5dd75c9f9a26d02c0d646d1dd6c886c63f6af52104f1637d19eb7ccafd6d1f88 |
| SHA512 | b59771f658c4d12693c4db333e15f132093f868e87bd111de5384bc47cb921987899c3c6f078faf650b26aeda299560bfce7514077fbbb45102505abb23272b1 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-04 18:56
Reported
2024-02-04 18:58
Platform
win7-20231215-en
Max time kernel
117s
Max time network
120s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{e3a729da-eabc-df50-1842-dfd682644311} | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\mswapi.dll | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311} | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32\ = "C:\\Windows\\SysWow64\\mswapi.dll" | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e3a729da-eabc-df50-1842-dfd682644311}\script = 18b449998991e1c3e4419ec72743b4d1b41bc098362d58e33d16a18321fe2c6d846ec0 | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2056 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2056 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2056 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2056 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe
"C:\Users\Admin\AppData\Local\Temp\8fe72633f6b0fb3ab0e91047b9e9dfc7.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\delt.bat" "
Network
Files
memory/2056-0-0x0000000000510000-0x0000000000519000-memory.dmp
memory/2056-3-0x0000000000400000-0x0000000000407000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\delt.bat
| MD5 | f73a3b3d034e62ea99d1f4e01b6cb41e |
| SHA1 | 22f63a73d1d28de7270fb6615c0d0059b5043f7c |
| SHA256 | 5dd75c9f9a26d02c0d646d1dd6c886c63f6af52104f1637d19eb7ccafd6d1f88 |
| SHA512 | b59771f658c4d12693c4db333e15f132093f868e87bd111de5384bc47cb921987899c3c6f078faf650b26aeda299560bfce7514077fbbb45102505abb23272b1 |
memory/2056-11-0x0000000000510000-0x0000000000519000-memory.dmp