Analysis Overview
SHA256
3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a
Threat Level: Known bad
The file 3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN was found to be: Known bad.
Malicious Activity Summary
Ramnit
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
UPX packed file
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-10-03 19:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-03 19:17
Reported
2024-10-03 19:19
Platform
win7-20240903-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
Ramnit
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\regsvr32mgr.exe | C:\Windows\SysWOW64\regsvr32.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 |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\regsvr32mgr.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
C:\Windows\SysWOW64\regsvr32mgr.exe
C:\Windows\SysWOW64\regsvr32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 180
Network
Files
memory/2396-1-0x0000000074500000-0x000000007456D000-memory.dmp
\Windows\SysWOW64\regsvr32mgr.exe
| MD5 | a8245f71e4e4aff10e574300abd2bcc2 |
| SHA1 | 7ea3ae53a0697e526c6bc877b103b390af042d7a |
| SHA256 | 7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546 |
| SHA512 | 8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978 |
memory/2396-9-0x0000000000280000-0x00000000002DC000-memory.dmp
memory/2396-8-0x0000000000280000-0x00000000002DC000-memory.dmp
memory/2716-11-0x0000000000400000-0x000000000045C000-memory.dmp
\Users\Admin\AppData\Local\Temp\~TME4B4.tmp
| MD5 | d124f55b9393c976963407dff51ffa79 |
| SHA1 | 2c7bbedd79791bfb866898c85b504186db610b5d |
| SHA256 | ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef |
| SHA512 | 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06 |
\Users\Admin\AppData\Local\Temp\~TME4F3.tmp
| MD5 | 9b98d47916ead4f69ef51b56b0c2323c |
| SHA1 | 290a80b4ded0efc0fd00816f373fcea81a521330 |
| SHA256 | 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b |
| SHA512 | 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94 |
memory/2716-18-0x0000000000400000-0x000000000045C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-03 19:17
Reported
2024-10-03 19:19
Platform
win10v2004-20240802-en
Max time kernel
93s
Max time network
95s
Command Line
Signatures
Ramnit
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\regsvr32mgr.exe | C:\Windows\SysWOW64\regsvr32.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 |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\regsvr32mgr.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\regsvr32mgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000} | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension" | C:\Windows\SysWOW64\regsvr32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32 | C:\Windows\SysWOW64\regsvr32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4964 wrote to memory of 2396 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4964 wrote to memory of 2396 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4964 wrote to memory of 2396 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2396 wrote to memory of 1512 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\regsvr32mgr.exe |
| PID 2396 wrote to memory of 1512 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\regsvr32mgr.exe |
| PID 2396 wrote to memory of 1512 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\regsvr32mgr.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
C:\Windows\SysWOW64\regsvr32mgr.exe
C:\Windows\SysWOW64\regsvr32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1512 -ip 1512
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 540
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 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.108.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 108.11.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 243.108.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.108.222.173.in-addr.arpa | udp |
Files
memory/2396-0-0x0000000074A90000-0x0000000074AFD000-memory.dmp
C:\Windows\SysWOW64\regsvr32mgr.exe
| MD5 | a8245f71e4e4aff10e574300abd2bcc2 |
| SHA1 | 7ea3ae53a0697e526c6bc877b103b390af042d7a |
| SHA256 | 7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546 |
| SHA512 | 8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978 |
memory/1512-4-0x0000000000400000-0x000000000045C000-memory.dmp
memory/1512-6-0x0000000000400000-0x000000000045C000-memory.dmp
memory/1512-7-0x0000000000400000-0x000000000045C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\~TM9A4C.tmp
| MD5 | 4f3387277ccbd6d1f21ac5c07fe4ca68 |
| SHA1 | e16506f662dc92023bf82def1d621497c8ab5890 |
| SHA256 | 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac |
| SHA512 | 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219 |
memory/1512-11-0x0000000000400000-0x000000000045C000-memory.dmp