Analysis Overview
SHA256
10fc720a537810eb0491d795e54f8c97d4b4fb2d6ac863de2e628fdf2ffae892
Threat Level: Known bad
The file 03703538020f226e3a93c3e4bc98a9e72c3766d1.dll was found to be: Known bad.
Malicious Activity Summary
Detects Grandoreiro payload
Grandoreiro
Grandoreiro family
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-08 14:39
Signatures
Detects Grandoreiro payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Grandoreiro family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-08 14:39
Reported
2024-11-08 14:41
Platform
win7-20241023-en
Max time kernel
119s
Max time network
122s
Command Line
Signatures
Detects Grandoreiro payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Grandoreiro
Grandoreiro family
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2064 wrote to memory of 2416 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03703538020f226e3a93c3e4bc98a9e72c3766d1.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03703538020f226e3a93c3e4bc98a9e72c3766d1.dll,#1
Network
Files
memory/2416-0-0x0000000002070000-0x0000000003F2D000-memory.dmp
memory/2416-1-0x0000000000140000-0x0000000000141000-memory.dmp
memory/2416-30-0x0000000000220000-0x0000000000221000-memory.dmp
memory/2416-28-0x0000000000220000-0x0000000000221000-memory.dmp
memory/2416-25-0x00000000001D0000-0x00000000001D1000-memory.dmp
memory/2416-23-0x00000000001D0000-0x00000000001D1000-memory.dmp
memory/2416-20-0x0000000000180000-0x0000000000181000-memory.dmp
memory/2416-18-0x0000000000180000-0x0000000000181000-memory.dmp
memory/2416-15-0x0000000000170000-0x0000000000171000-memory.dmp
memory/2416-13-0x0000000000170000-0x0000000000171000-memory.dmp
memory/2416-10-0x0000000000160000-0x0000000000161000-memory.dmp
memory/2416-8-0x0000000000160000-0x0000000000161000-memory.dmp
memory/2416-6-0x0000000000160000-0x0000000000161000-memory.dmp
memory/2416-5-0x0000000000140000-0x0000000000141000-memory.dmp
memory/2416-3-0x0000000000140000-0x0000000000141000-memory.dmp
memory/2416-31-0x0000000002070000-0x0000000003F2D000-memory.dmp
memory/2416-32-0x00000000003D0000-0x00000000003D1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-08 14:39
Reported
2024-11-08 14:41
Platform
win10v2004-20241007-en
Max time kernel
92s
Max time network
145s
Command Line
Signatures
Detects Grandoreiro 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 |
| N/A | N/A | N/A | N/A |
Grandoreiro
Grandoreiro family
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1832 wrote to memory of 3980 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1832 wrote to memory of 3980 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1832 wrote to memory of 3980 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03703538020f226e3a93c3e4bc98a9e72c3766d1.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03703538020f226e3a93c3e4bc98a9e72c3766d1.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
Files
memory/3980-0-0x00000000022B0000-0x000000000416D000-memory.dmp
memory/3980-7-0x0000000000C30000-0x0000000000C31000-memory.dmp
memory/3980-6-0x0000000000C20000-0x0000000000C21000-memory.dmp
memory/3980-5-0x0000000000C10000-0x0000000000C11000-memory.dmp
memory/3980-4-0x00000000009A0000-0x00000000009A1000-memory.dmp
memory/3980-3-0x0000000000990000-0x0000000000991000-memory.dmp
memory/3980-2-0x0000000000980000-0x0000000000981000-memory.dmp
memory/3980-1-0x00000000022B0000-0x000000000416D000-memory.dmp
memory/3980-9-0x0000000003349000-0x0000000003EF9000-memory.dmp
memory/3980-8-0x00000000022B0000-0x000000000416D000-memory.dmp
memory/3980-10-0x00000000022B0000-0x000000000416D000-memory.dmp
memory/3980-11-0x00000000022B0000-0x000000000416D000-memory.dmp