Analysis Overview
SHA256
d6bbd7322d650172dc416d232a8965a35d18051d29634116df4f8cb175dd660d
Threat Level: Known bad
The file readme2.bin was found to be: Known bad.
Malicious Activity Summary
Gozi, Gozi IFSB
Drops file in System32 directory
Program crash
Enumerates system info in registry
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-22 11:32
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-22 11:32
Reported
2022-03-22 11:35
Platform
win7-20220311-en
Max time kernel
4294180s
Max time network
121s
Command Line
Signatures
Gozi, Gozi IFSB
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\readme2.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\readme2.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 224
Network
Files
memory/1620-54-0x00000000755A1000-0x00000000755A3000-memory.dmp
memory/1620-55-0x0000000000740000-0x00000000007E8000-memory.dmp
memory/1620-57-0x00000000001F0000-0x00000000001FE000-memory.dmp
memory/1620-56-0x00000000001F0000-0x00000000001FE000-memory.dmp
memory/1620-59-0x00000000001F0000-0x00000000001FE000-memory.dmp
memory/1620-60-0x00000000001C0000-0x00000000001CC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-22 11:32
Reported
2022-03-22 11:35
Platform
win10v2004-20220310-en
Max time kernel
132s
Max time network
135s
Command Line
Signatures
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{C6C67993-B833-442B-B03B-775A186CCC00}.catalogItem | C:\Windows\System32\svchost.exe | N/A |
| File created | C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{24DC5DB5-0B07-4401-AFB2-C8BF064973A8}.catalogItem | C:\Windows\System32\svchost.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\System32\svchost.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\System32\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2724 wrote to memory of 5016 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2724 wrote to memory of 5016 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2724 wrote to memory of 5016 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\readme2.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\readme2.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | licensing.mp.microsoft.com | udp |
| US | 20.96.63.25:443 | licensing.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | storesdk.dsx.mp.microsoft.com | udp |
| FR | 2.18.109.224:443 | storesdk.dsx.mp.microsoft.com | tcp |
| US | 20.96.63.25:443 | licensing.mp.microsoft.com | tcp |
| US | 20.96.63.25:443 | licensing.mp.microsoft.com | tcp |
| US | 20.96.63.25:443 | licensing.mp.microsoft.com | tcp |