Analysis Overview
SHA256
ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c
Threat Level: Known bad
The file ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c was found to be: Known bad.
Malicious Activity Summary
FatalRat
Fatal Rat payload
Blocklisted process makes network request
Executes dropped EXE
Suspicious use of SetThreadContext
Drops file in System32 directory
Drops file in Windows directory
Program crash
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-08-03 09:16
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-08-03 09:16
Reported
2023-08-03 09:18
Platform
win7-20230712-en
Max time kernel
120s
Max time network
147s
Command Line
Signatures
FatalRat
Fatal Rat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Vwxyab.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2244 set thread context of 2684 | N/A | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe | C:\Windows\SysWOW64\cmd.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Vwxyab.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
| File opened for modification | C:\Windows\Vwxyab.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe
"C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 808
C:\Windows\Vwxyab.exe
C:\Windows\Vwxyab.exe
Network
| Country | Destination | Domain | Proto |
| HK | 216.83.38.229:80 | 216.83.38.229 | tcp |
| HK | 216.83.38.229:55415 | tcp |
Files
memory/2244-57-0x0000000003470000-0x0000000003614000-memory.dmp
memory/2684-58-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-59-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-62-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-60-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-64-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2684-68-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-70-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-71-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/2684-72-0x0000000010000000-0x000000001002A000-memory.dmp
C:\Windows\Vwxyab.exe
| MD5 | ad7b9c14083b52bc532fba5948342b98 |
| SHA1 | ee8cbf12d87c4d388f09b4f69bed2e91682920b5 |
| SHA256 | 17f746d82695fa9b35493b41859d39d786d32b23a9d2e00f4011dec7a02402ae |
| SHA512 | e12aad20c824187b39edb3c7943709290b5ddbf1b4032988db46f2e86da3cf7e7783f78c82e4dc5da232f666b8f9799a260a1f8e2694eb4d0cdaf78da710fde1 |
memory/2244-80-0x0000000003470000-0x0000000003614000-memory.dmp
memory/2684-81-0x0000000000400000-0x00000000005A4000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-08-03 09:16
Reported
2023-08-03 09:18
Platform
win10v2004-20230703-en
Max time kernel
140s
Max time network
146s
Command Line
Signatures
FatalRat
Fatal Rat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Vwxyab.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3196 set thread context of 1792 | N/A | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe | C:\Windows\SysWOW64\cmd.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Vwxyab.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
| File opened for modification | C:\Windows\Vwxyab.exe | C:\Windows\SysWOW64\cmd.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe
"C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3196 -ip 3196
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1296
C:\Windows\Vwxyab.exe
C:\Windows\Vwxyab.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 126.209.247.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| HK | 216.83.38.229:80 | 216.83.38.229 | tcp |
| US | 8.8.8.8:53 | 229.38.83.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 161.252.72.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| HK | 216.83.38.229:55415 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.178.89.13.in-addr.arpa | udp |
Files
memory/3196-137-0x0000000003E00000-0x0000000003FA4000-memory.dmp
memory/1792-138-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/1792-140-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/1792-141-0x0000000000400000-0x00000000005A4000-memory.dmp
memory/1792-142-0x0000000010000000-0x000000001002A000-memory.dmp
C:\Windows\Vwxyab.exe
| MD5 | d0fce3afa6aa1d58ce9fa336cc2b675b |
| SHA1 | 4048488de6ba4bfef9edf103755519f1f762668f |
| SHA256 | 4d89fc34d5f0f9babd022271c585a9477bf41e834e46b991deaa0530fdb25e22 |
| SHA512 | 80e127ef81752cd50f9ea2d662dc4d3bf8db8d29680e75fa5fc406ca22cafa5c4d89ef2eac65b486413d3cdd57a2c12a1cb75f65d1e312a717d262265736d1c2 |
memory/3196-150-0x0000000003E00000-0x0000000003FA4000-memory.dmp
memory/1792-151-0x0000000000400000-0x00000000005A4000-memory.dmp