Analysis Overview
SHA256
1b3ff3186a922c56d2878b848eae40037a754882705c2af4b33e851cf26d7859
Threat Level: Likely malicious
The file b24d204772ac32d11a09fa611078a1b4 was found to be: Likely malicious.
Malicious Activity Summary
Modifies AppInit DLL entries
UPX packed file
Deletes itself
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-04 13:59
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 |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-04 13:59
Reported
2024-03-04 14:01
Platform
win7-20240221-en
Max time kernel
150s
Max time network
125s
Command Line
Signatures
Modifies AppInit DLL entries
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\mduaeyk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\mduaeyk.exe | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\mduaeyk.exe | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
| File created | C:\Windows\SysWOW64\mduaey.dll | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe
"C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe"
C:\Windows\SysWOW64\mduaeyk.exe
C:\Windows\system32\mduaeyk.exe ˜‰
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat
Network
Files
memory/2084-0-0x0000000000400000-0x000000000040F000-memory.dmp
\Windows\SysWOW64\mduaeyk.exe
| MD5 | b24d204772ac32d11a09fa611078a1b4 |
| SHA1 | d1037bacf78a1553060a3fccf9a366552bba95ee |
| SHA256 | 1b3ff3186a922c56d2878b848eae40037a754882705c2af4b33e851cf26d7859 |
| SHA512 | 633c488a871fcd059fbe656980cf142fa32414c101db4b86655d2557583e5c2c721d8532776c41791c9370d8914773eee9c791f6b1b16b2637a75bc5c40d904d |
memory/2084-4-0x0000000000220000-0x000000000022F000-memory.dmp
memory/2084-10-0x0000000000220000-0x000000000022F000-memory.dmp
memory/1408-12-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat
| MD5 | 471f2c1ffcb997493e64179948ca43ab |
| SHA1 | 10b484c6f76a430ca133dc51b21891a303b3d808 |
| SHA256 | e52d758998118a279a07385b2cf5b5793a1335308eb6c6eb5deaecf248bf4e49 |
| SHA512 | 2419fe56232ad920124849d468545899f759a25873810a299a5da2e15976dc92bf485f1ffbf9c5fc1536fcf4a1b01c6495c15d0789b64332be1a2491c1da1458 |
memory/2084-20-0x0000000000400000-0x000000000040F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-04 13:59
Reported
2024-03-04 14:01
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\mduaeyk.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\mduaey.dll | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
| File created | C:\Windows\SysWOW64\mduaeyk.exe | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\mduaeyk.exe | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2632 wrote to memory of 1760 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\mduaeyk.exe |
| PID 2632 wrote to memory of 1760 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\mduaeyk.exe |
| PID 2632 wrote to memory of 1760 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\mduaeyk.exe |
| PID 2632 wrote to memory of 976 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2632 wrote to memory of 976 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2632 wrote to memory of 976 | N/A | C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe
"C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe"
C:\Windows\SysWOW64\mduaeyk.exe
C:\Windows\system32\mduaeyk.exe ˜‰
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 179.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.173.189.20.in-addr.arpa | udp |
Files
memory/2632-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\SysWOW64\mduaeyk.exe
| MD5 | b24d204772ac32d11a09fa611078a1b4 |
| SHA1 | d1037bacf78a1553060a3fccf9a366552bba95ee |
| SHA256 | 1b3ff3186a922c56d2878b848eae40037a754882705c2af4b33e851cf26d7859 |
| SHA512 | 633c488a871fcd059fbe656980cf142fa32414c101db4b86655d2557583e5c2c721d8532776c41791c9370d8914773eee9c791f6b1b16b2637a75bc5c40d904d |
memory/2632-8-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat
| MD5 | 471f2c1ffcb997493e64179948ca43ab |
| SHA1 | 10b484c6f76a430ca133dc51b21891a303b3d808 |
| SHA256 | e52d758998118a279a07385b2cf5b5793a1335308eb6c6eb5deaecf248bf4e49 |
| SHA512 | 2419fe56232ad920124849d468545899f759a25873810a299a5da2e15976dc92bf485f1ffbf9c5fc1536fcf4a1b01c6495c15d0789b64332be1a2491c1da1458 |
memory/1760-10-0x0000000000400000-0x000000000040F000-memory.dmp