Analysis Overview
SHA256
00b99ea9c4a00742c356b29dee039c17891eb9cef040aec7842b7c38899622b6
Threat Level: Known bad
The file 5fb1da1d27e51c036e788d171e641819 was found to be: Known bad.
Malicious Activity Summary
MetaSploit
Deletes itself
Executes dropped EXE
UPX packed file
Checks computer location settings
Adds Run key to start application
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-16 10:41
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-16 10:41
Reported
2024-01-16 10:44
Platform
win7-20231215-en
Max time kernel
146s
Max time network
137s
Command Line
Signatures
MetaSploit
Deletes itself
| 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\SysWOW64\msdlli.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 |
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MS DLL IN = "C:\\Windows\\SysWOW64\\msdlli.exe" | C:\Windows\SysWOW64\msdlli.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\svchost.dll | C:\Windows\SysWOW64\msdlli.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\svchost.dll | C:\Windows\SysWOW64\msdlli.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat | C:\Windows\SysWOW64\msdlli.exe | N/A |
| File created | C:\Windows\SysWOW64\msdlli.exe | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\msdlli.exe | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\msdlli.exe | C:\Windows\SysWOW64\msdlli.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\msdlli.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\msdlli.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1236 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1236 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1236 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1236 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe
"C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe"
C:\Windows\SysWOW64\msdlli.exe
C:\Windows\SysWOW64\msdlli.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\5FB1DA~1.EXE" >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | n.proxyisp.info | udp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
Files
memory/1236-0-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\SysWOW64\msdlli.exe
| MD5 | 0473ede26a21f7bb1af7210bcd5729df |
| SHA1 | 9f6b1aa5ef4bcc38e9859bb36b12611b070714ed |
| SHA256 | a2384c6cd6c67fbc429d29af3a3892b7318e9adf925e5e9af7f3b9afdfcf3f7a |
| SHA512 | 2d3d4c4cb1b6e4494fdd17951c3e9e24bd1db85533eef2a3f5ac1a3818de00c9d7cd3ee58020b67627192655ce24a797e6de73fc83dbbe623b637024a394ec5c |
memory/2380-4-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1236-5-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\SysWOW64\msdlli.exe
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/2380-9-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2380-11-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2380-15-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2380-17-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2380-19-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2380-22-0x0000000000400000-0x0000000000422000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-16 10:41
Reported
2024-01-16 10:44
Platform
win10v2004-20231215-en
Max time kernel
147s
Max time network
151s
Command Line
Signatures
MetaSploit
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\5fb1da1d27e51c036e788d171e641819.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\msdlli.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 |
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MS DLL IN = "C:\\Windows\\SysWOW64\\msdlli.exe" | C:\Windows\SysWOW64\msdlli.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\msdlli.exe | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\msdlli.exe | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\msdlli.exe | C:\Windows\SysWOW64\msdlli.exe | N/A |
| File created | C:\Windows\SysWOW64\svchost.dll | C:\Windows\SysWOW64\msdlli.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\svchost.dll | C:\Windows\SysWOW64\msdlli.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\msdlli.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\msdlli.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2940 wrote to memory of 3508 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2940 wrote to memory of 3508 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2940 wrote to memory of 3508 | N/A | C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe
"C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe"
C:\Windows\SysWOW64\msdlli.exe
C:\Windows\SysWOW64\msdlli.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\5FB1DA~1.EXE" >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | n.proxyisp.info | udp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 154.35.64.81:1791 | n.proxyisp.info | tcp |
| US | 8.8.8.8:53 | 105.193.132.51.in-addr.arpa | udp |
Files
memory/2940-0-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\SysWOW64\msdlli.exe
| MD5 | 69f51b1cbbeeae722b1b602abf871092 |
| SHA1 | aa1f31ab17b0c46bb9ad81b526bfa9c45d0cba61 |
| SHA256 | 03ae7910ce0c02dea3cf3cf5c5885c77d52fc0a87c9bc625cb742fecc787ac6f |
| SHA512 | ac78c7d8e3d481ac791fd59d8d701c527d9adc07e14f03e0dad4d3cb3d9e9bf2a3fcbcce0bf695728a7cc1f229cb1fe9151e6ef174d013b5bc63b8bf7820f3f6 |
C:\Windows\SysWOW64\msdlli.exe
| MD5 | 5fb1da1d27e51c036e788d171e641819 |
| SHA1 | a2250f189da33775857e5c78a88a9f4e2b30f8e0 |
| SHA256 | 00b99ea9c4a00742c356b29dee039c17891eb9cef040aec7842b7c38899622b6 |
| SHA512 | c264528584cf841c2a6088875b34863c5a76b035b6a22ac74fa744141afe22ddadf218ede7f579394a3192113c57a4ca4923df584023c41dbc2193a977bb6845 |
memory/2940-5-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-8-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-10-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-14-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-16-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-18-0x0000000000400000-0x0000000000422000-memory.dmp
memory/5056-20-0x0000000000400000-0x0000000000422000-memory.dmp