Analysis Overview
SHA256
503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7
Threat Level: Known bad
The file 503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7 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
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-03-29 21:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-29 21:10
Reported
2024-03-29 21:13
Platform
win10v2004-20240226-en
Max time kernel
114s
Max time network
141s
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 4956 wrote to memory of 4600 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4956 wrote to memory of 4600 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4956 wrote to memory of 4600 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4600 wrote to memory of 1684 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
| PID 4600 wrote to memory of 1684 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32mgr.exe |
| PID 4600 wrote to memory of 1684 | 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\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1684 -ip 1684
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 516
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1032 --field-trial-handle=2228,i,521073434451423547,2311651514500527526,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 13.107.246.64:443 | tcp | |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| NL | 142.251.36.10:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 10.36.251.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 40.134.221.88.in-addr.arpa | udp |
Files
memory/4600-1-0x0000000010000000-0x0000000010057000-memory.dmp
C:\Windows\SysWOW64\rundll32mgr.exe
| MD5 | 2ad7467eeceedd64b8bd4f6e04c3cd49 |
| SHA1 | d6c5d9878dc49ae9b531d61283609e207154a921 |
| SHA256 | 2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9 |
| SHA512 | 7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a |
memory/1684-5-0x0000000000400000-0x0000000000432000-memory.dmp
memory/1684-7-0x0000000000400000-0x0000000000432000-memory.dmp
memory/1684-10-0x00000000005C0000-0x00000000005F2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\~TM738A.tmp
| MD5 | 4f3387277ccbd6d1f21ac5c07fe4ca68 |
| SHA1 | e16506f662dc92023bf82def1d621497c8ab5890 |
| SHA256 | 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac |
| SHA512 | 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219 |
memory/1684-11-0x0000000077EB2000-0x0000000077EB3000-memory.dmp
memory/1684-12-0x0000000077EB2000-0x0000000077EB4000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-29 21:10
Reported
2024-03-29 21:13
Platform
win7-20240215-en
Max time kernel
119s
Max time network
120s
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\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\503dedc4758ed147987b60cd85cb733d8066834d8f67c32945352d46c5d772e7.dll,#1
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2920 -s 180
Network
Files
\Windows\SysWOW64\rundll32mgr.exe
| MD5 | 2ad7467eeceedd64b8bd4f6e04c3cd49 |
| SHA1 | d6c5d9878dc49ae9b531d61283609e207154a921 |
| SHA256 | 2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9 |
| SHA512 | 7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a |
memory/2968-3-0x0000000000270000-0x00000000002A2000-memory.dmp
memory/2968-1-0x0000000010000000-0x0000000010057000-memory.dmp
memory/2920-14-0x0000000000270000-0x00000000002A2000-memory.dmp
memory/2920-13-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2920-11-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2968-9-0x0000000000270000-0x00000000002A2000-memory.dmp
\Users\Admin\AppData\Local\Temp\~TM189F.tmp
| MD5 | d124f55b9393c976963407dff51ffa79 |
| SHA1 | 2c7bbedd79791bfb866898c85b504186db610b5d |
| SHA256 | ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef |
| SHA512 | 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06 |
\Users\Admin\AppData\Local\Temp\~TM18BF.tmp
| MD5 | 9b98d47916ead4f69ef51b56b0c2323c |
| SHA1 | 290a80b4ded0efc0fd00816f373fcea81a521330 |
| SHA256 | 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b |
| SHA512 | 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94 |
memory/2920-22-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2920-24-0x00000000757B0000-0x00000000758C0000-memory.dmp
memory/2920-23-0x0000000077930000-0x0000000077932000-memory.dmp
memory/2920-19-0x0000000077930000-0x0000000077931000-memory.dmp
memory/2920-18-0x000000007792F000-0x0000000077931000-memory.dmp