Analysis Overview
SHA256
b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b
Threat Level: Shows suspicious behavior
The file b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
Deletes itself
UPX packed file
Checks computer location settings
Loads dropped DLL
Suspicious use of SetThreadContext
Drops file in Windows directory
Program crash
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-09 07:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-09 07:34
Reported
2024-06-09 07:37
Platform
win7-20240221-en
Max time kernel
122s
Max time network
127s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\nk.txt | C:\Windows\SysWOW64\cmd.exe | N/A |
| File created | C:\WINDOWS\VWFLH\rMX.exe | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
| File opened for modification | C:\WINDOWS\VWFLH\rMX.exe | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
| File created | \??\c:\windows\rMX.exe.bat | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File created | C:\WINDOWS\VWFLH\rMX.exe.exe | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File opened for modification | C:\WINDOWS\VWFLH\rMX.exe.exe | C:\WINDOWS\VWFLH\rMX.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe
"C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe"
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c echo 0>>c:\windows\nk.txt
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\WINDOWS\VWFLH\rMX.exe.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c c:\85.vbs
C:\WINDOWS\VWFLH\rMX.exe.exe
C:\WINDOWS\VWFLH\rMX.exe.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c c:\88.vbs
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\85.vbs"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\88.vbs"
Network
Files
C:\Windows\VWFLH\rMX.exe
| MD5 | dae39904d892c7cfaaa95bfa50a7b976 |
| SHA1 | 296d813c666e50c1816b7a77546a6ac93b826ceb |
| SHA256 | b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b |
| SHA512 | 83a9325bccc04ea9e04b6e5255b888e9f01ceb32b8d524e34f2a5817d54ec3e93787cdfffec840d2b05e5a313fe3bf91636a15af90451a40a83fa788213204f0 |
memory/2988-13-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
memory/2740-15-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
\Windows\VWFLH\rMX.exe.exe
| MD5 | 11e1d8159af3475e3b897e0f8f879940 |
| SHA1 | 6dbf00b501fbd420d8219957c955ecac8af56dcb |
| SHA256 | b0439edfece7ce3be6275b33f3818d9b0e34bed5f078e3dca6fe1825ba683679 |
| SHA512 | 159d3271bdb8c6e8aa19605ee916431a6af4ec2b0b9ac10b867cb7f3c648923107511775bc5c4208a9709d349c931338cc5dec18f2e829e79a73c7b9dca5d143 |
C:\85.vbs
| MD5 | be4bec113d3e78f731a2574ff4bf9f4a |
| SHA1 | 2711436d2a607701fc09f12ec43ec845719e94b5 |
| SHA256 | f0cea06bd67c122a7b5a3ef431f6e719998b0437a96831a165001c0560a3c00a |
| SHA512 | 10948a4d356f59395b4aac5e4f6ce8b5cb5dbd1bf4ea0e4a302628ab0151ab36346ac2c53e80cc1c716f420b8ac93950ae0811f979b6f551c512803c36a183d9 |
memory/2508-28-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
C:\88.vbs
| MD5 | f9a1a5c1ab7d3d6d6a21d84d9f7733c0 |
| SHA1 | 05a29559857825c82c9652b31b94b3cfb458c070 |
| SHA256 | a1321e66807fd956e9b9e0ed938a1393f676df717ffbfd74a08d3c632ef1a711 |
| SHA512 | 5eea6e6ceac56c4b2ac01347b86f41785be0adcc76e4f5d64af5e98133c95c572a7b0a6ed16bf475d54079d6a31f801bd8220cd783dec20cbe0986fb25d685ed |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-09 07:34
Reported
2024-06-09 07:37
Platform
win10v2004-20240426-en
Max time kernel
144s
Max time network
147s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\cmd.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| N/A | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
UPX packed file
| 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 |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1488 set thread context of 4660 | N/A | C:\WINDOWS\VWFLH\rMX.exe | C:\WINDOWS\VWFLH\rMX.exe |
| PID 1488 set thread context of 4064 | N/A | C:\WINDOWS\VWFLH\rMX.exe | C:\WINDOWS\VWFLH\rMX.exe |
| PID 1488 set thread context of 2196 | N/A | C:\WINDOWS\VWFLH\rMX.exe | C:\WINDOWS\VWFLH\rMX.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | \??\c:\windows\rMX.exe.bat | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File opened for modification | \??\c:\windows\nk.txt | C:\Windows\SysWOW64\cmd.exe | N/A |
| File created | C:\WINDOWS\VWFLH\rMX.exe | C:\WINDOWS\VWFLH\rMX.exe.exe | N/A |
| File created | \??\c:\windows\rMX.exe.bat | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File created | C:\WINDOWS\VWFLH\rMX.exe.exe | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File opened for modification | C:\WINDOWS\VWFLH\rMX.exe.exe | C:\WINDOWS\VWFLH\rMX.exe | N/A |
| File opened for modification | C:\WINDOWS\VWFLH\rMX.exe | C:\WINDOWS\VWFLH\rMX.exe.exe | N/A |
| File created | C:\WINDOWS\VWFLH\rMX.exe | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
| File opened for modification | C:\WINDOWS\VWFLH\rMX.exe | C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\WINDOWS\VWFLH\rMX.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000_Classes\Local Settings | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000_Classes\Local Settings | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\WINDOWS\VWFLH\rMX.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe
"C:\Users\Admin\AppData\Local\Temp\b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b.exe"
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c echo 0>>c:\windows\nk.txt
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\WINDOWS\VWFLH\rMX.exe.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c c:\13.vbs
C:\WINDOWS\VWFLH\rMX.exe.exe
C:\WINDOWS\VWFLH\rMX.exe.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\WINDOWS\VWFLH\rMX.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c c:\64.vbs
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\13.vbs"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2196 -ip 2196
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4064 -ip 4064
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 80
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 80
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\64.vbs"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
| US | 8.8.8.8:53 | mf163.3322.org | udp |
Files
C:\Windows\VWFLH\rMX.exe
| MD5 | dae39904d892c7cfaaa95bfa50a7b976 |
| SHA1 | 296d813c666e50c1816b7a77546a6ac93b826ceb |
| SHA256 | b7b403ed495e91977aac36d4b80c1b60fa0f6cbb3b9ff9c2b357a3b7aa022d2b |
| SHA512 | 83a9325bccc04ea9e04b6e5255b888e9f01ceb32b8d524e34f2a5817d54ec3e93787cdfffec840d2b05e5a313fe3bf91636a15af90451a40a83fa788213204f0 |
memory/1204-10-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
memory/2268-9-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
C:\Windows\VWFLH\rMX.exe.exe
| MD5 | acda0d5dd519bb7600d6d35af3c8b189 |
| SHA1 | d103ce109869c19dd037e4348eca6e7dfa3d0b0b |
| SHA256 | f400c75f1d91dadb03ef03d6e2dbe9e71042794aba8e9a8b278c02bb235a260d |
| SHA512 | 02b336079436fae2db16780f4d79ade1da9b8b0617a02980f49d34ce200b56efd13525e5f9737ebc4b7c454d48d04b5999f77c68b9b857d8baae9ff056243f03 |
memory/4660-22-0x0000000010000000-0x000000001002A000-memory.dmp
memory/4660-29-0x0000000010000000-0x000000001002A000-memory.dmp
C:\13.vbs
| MD5 | 4fc553bf0fd7a436b104a162d998a5e1 |
| SHA1 | 8e034bf7ef81ff8e38941b63e216adc0158617fd |
| SHA256 | 8f341f682c7f5f5c237ef717781249ac8db6e59ccffae2de26e2f498af3e61fb |
| SHA512 | b8e597e70198b5a5ef20cb9d1d6e7d6fb2a80a6edcc0ff882ade30de29394aadaf9aaf9ef298b40b5dc988a791e5eb55e8e1628f9ab144f5bff6b673a69287ca |
memory/3840-35-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
C:\64.vbs
| MD5 | 1b17358618f4d20e00ba6f2eeb9aab03 |
| SHA1 | cca9115ee97eb54bd2a82ea156bbf8ab62a472c9 |
| SHA256 | 921afc09aa5117b83222e3c17495838aaddad9f2194ffc0b854a17e4743af420 |
| SHA512 | a438b0a902232d2c57e7d2144e57117d77a912ff1b826b7c0668fb0225f342ea2696efc9901d1cc050e8580bc6aaaf36ae2bde5b08e931fb7e982543d66c9515 |
memory/4660-34-0x0000000010000000-0x000000001002A000-memory.dmp
memory/4660-33-0x0000000010000000-0x000000001002A000-memory.dmp
memory/1488-32-0x000000007EEE0000-0x000000007EEFF000-memory.dmp
memory/4660-20-0x0000000010000000-0x000000001002A000-memory.dmp
memory/4660-21-0x0000000010000000-0x000000001002A000-memory.dmp