Analysis Overview
SHA256
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd
Threat Level: Known bad
The file 3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd was found to be: Known bad.
Malicious Activity Summary
Ramnit
UPX dump on OEP (original entry point)
Loads dropped DLL
UPX packed file
Executes dropped EXE
Drops file in System32 directory
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-03-29 20:18
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-29 20:18
Reported
2024-03-29 20:21
Platform
win7-20240221-en
Max time kernel
122s
Max time network
127s
Command Line
Signatures
Ramnit
UPX dump on OEP (original entry point)
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32mgr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32mgr.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32mgr.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\rundll32mgr.exe | C:\Windows\SysWOW64\rundll32.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 180
Network
Files
memory/2720-0-0x0000000010000000-0x000000001005A000-memory.dmp
memory/2720-4-0x00000000001F0000-0x0000000000222000-memory.dmp
\Windows\SysWOW64\rundll32mgr.exe
| MD5 | 2ad7467eeceedd64b8bd4f6e04c3cd49 |
| SHA1 | d6c5d9878dc49ae9b531d61283609e207154a921 |
| SHA256 | 2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9 |
| SHA512 | 7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a |
memory/2720-2-0x0000000010000000-0x000000001005A000-memory.dmp
memory/2888-11-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2888-13-0x0000000000220000-0x0000000000252000-memory.dmp
\Users\Admin\AppData\Local\Temp\~TM9473.tmp
| MD5 | d124f55b9393c976963407dff51ffa79 |
| SHA1 | 2c7bbedd79791bfb866898c85b504186db610b5d |
| SHA256 | ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef |
| SHA512 | 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06 |
memory/2888-16-0x0000000077B1F000-0x0000000077B21000-memory.dmp
memory/2888-17-0x0000000077B20000-0x0000000077B21000-memory.dmp
memory/2888-19-0x0000000077B20000-0x0000000077B22000-memory.dmp
memory/2888-22-0x00000000775F0000-0x0000000077700000-memory.dmp
\Users\Admin\AppData\Local\Temp\~TM9510.tmp
| MD5 | 9b98d47916ead4f69ef51b56b0c2323c |
| SHA1 | 290a80b4ded0efc0fd00816f373fcea81a521330 |
| SHA256 | 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b |
| SHA512 | 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94 |
memory/2888-23-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2888-24-0x00000000775F0000-0x0000000077700000-memory.dmp
memory/2720-25-0x00000000001F0000-0x00000000001F6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-29 20:18
Reported
2024-03-29 20:21
Platform
win10v2004-20240226-en
Max time kernel
93s
Max time network
95s
Command Line
Signatures
Ramnit
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32mgr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32mgr.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\rundll32mgr.exe | C:\Windows\SysWOW64\rundll32.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 5092 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 5092 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 5092 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3136 wrote to memory of 3340 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
| PID 3136 wrote to memory of 3340 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
| PID 3136 wrote to memory of 3340 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#1
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3340 -ip 3340
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3340 -s 540
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
Files
C:\Windows\SysWOW64\rundll32mgr.exe
| MD5 | 2ad7467eeceedd64b8bd4f6e04c3cd49 |
| SHA1 | d6c5d9878dc49ae9b531d61283609e207154a921 |
| SHA256 | 2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9 |
| SHA512 | 7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a |
memory/3136-4-0x0000000010000000-0x000000001005A000-memory.dmp
memory/3340-5-0x0000000000400000-0x0000000000432000-memory.dmp
memory/3340-7-0x0000000000400000-0x0000000000432000-memory.dmp
memory/3340-8-0x00000000021D0000-0x0000000002202000-memory.dmp
memory/3340-11-0x0000000077192000-0x0000000077193000-memory.dmp
memory/3340-12-0x0000000077192000-0x0000000077193000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\~TM3141.tmp
| MD5 | 4f3387277ccbd6d1f21ac5c07fe4ca68 |
| SHA1 | e16506f662dc92023bf82def1d621497c8ab5890 |
| SHA256 | 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac |
| SHA512 | 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219 |
memory/3340-13-0x0000000077192000-0x0000000077194000-memory.dmp