Analysis Overview
SHA256
8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608
Threat Level: Known bad
The file 8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608 was found to be: Known bad.
Malicious Activity Summary
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
Loads dropped DLL
UPX packed file
Deletes itself
Checks computer location settings
Executes dropped EXE
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 23:10
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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: behavioral2
Detonation Overview
Submitted
2024-04-07 23:10
Reported
2024-04-07 23:13
Platform
win10v2004-20240319-en
Max time kernel
147s
Max time network
156s
Command Line
Signatures
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\Graphics\guifx.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Graphics = "\"C:\\ProgramData\\Graphics\\guifx.exe\" /run" | C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe
"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"
C:\ProgramData\Graphics\guifx.exe
"C:\ProgramData\Graphics\guifx.exe" /run
C:\windows\SysWOW64\cmd.exe
"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe" >> NUL
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=4024 --field-trial-handle=2228,i,8155065313278028490,17854605419281052753,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| KR | 165.194.123.67:443 | tcp | |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| NL | 142.250.179.202:443 | tcp | |
| IE | 94.245.104.56:443 | tcp | |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.173.246.72.in-addr.arpa | udp |
| GB | 51.140.242.104:443 | tcp | |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| GB | 51.140.244.186:443 | tcp | |
| US | 8.8.8.8:53 | 121.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.14.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 130.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| KR | 165.194.123.67:443 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 12.173.189.20.in-addr.arpa | udp |
Files
memory/2788-0-0x0000000000870000-0x000000000088A000-memory.dmp
C:\ProgramData\Graphics\guifx.exe
| MD5 | 5c25cba1c0bdb5737c5d5350aedfe706 |
| SHA1 | df7932cc4f31ad0b1256ea5b72195c76cbec7294 |
| SHA256 | 59d465a871ac3379ee93be30c489eb3622ab128c186a89429a1393608ee1aea3 |
| SHA512 | 823b3ddccd57d8fa41f27460b1bd7229a23020fa83406b00c0cdb219871d8a81a0ea8bd9cce4029a8437a3f355270729f8ada91d525fc4c790d65cb345bf6e3d |
memory/392-4-0x0000000000500000-0x000000000051A000-memory.dmp
memory/2788-6-0x0000000000870000-0x000000000088A000-memory.dmp
memory/392-7-0x0000000000500000-0x000000000051A000-memory.dmp
memory/2788-12-0x0000000000870000-0x000000000088A000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 23:10
Reported
2024-04-07 23:13
Platform
win7-20240221-en
Max time kernel
140s
Max time network
124s
Command Line
Signatures
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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:\ProgramData\Graphics\guifx.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Graphics = "\"C:\\ProgramData\\Graphics\\guifx.exe\" /run" | C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe
"C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe"
C:\ProgramData\Graphics\guifx.exe
"C:\ProgramData\Graphics\guifx.exe" /run
C:\windows\SysWOW64\cmd.exe
"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8b8a07367ba7ccc9100b8383afb1a874ab12d59ae00890ede1b3d48c884d3608.exe" >> NUL
Network
| Country | Destination | Domain | Proto |
| KR | 165.194.123.67:443 | tcp | |
| KR | 165.194.123.67:443 | tcp |
Files
memory/2160-0-0x0000000000FB0000-0x0000000000FCA000-memory.dmp
\ProgramData\Graphics\guifx.exe
| MD5 | c8771bd3805e4aef7c95f0af7cb1fe09 |
| SHA1 | 60424b614a3f96709e67cdcfad1d5fcf44f0624d |
| SHA256 | 1be3f548c1ba4cf6c86c24f683ff91e3720d602842672efcfed191b8dcd3303c |
| SHA512 | 58933dce66dd1807f7d436855a5b004678fc835fc4b5c00fc2e24e6ef627b1751da9a22c817f3ce281b1e1c6a30a4cd69b4782d1e09cd5525056f95cd24364b2 |
memory/2292-6-0x0000000000E80000-0x0000000000E9A000-memory.dmp
memory/2160-7-0x0000000000FB0000-0x0000000000FCA000-memory.dmp
memory/2292-8-0x0000000000E80000-0x0000000000E9A000-memory.dmp
memory/2160-11-0x0000000000E80000-0x0000000000E9A000-memory.dmp
memory/2160-14-0x0000000000FB0000-0x0000000000FCA000-memory.dmp