Analysis Overview
SHA256
b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8
Threat Level: Known bad
The file b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8 was found to be: Known bad.
Malicious Activity Summary
Urelas
Urelas family
UPX dump on OEP (original entry point)
Detects executables built or packed with MPress PE compressor
UPX dump on OEP (original entry point)
UPX packed file
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Deletes itself
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-16 23:28
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Urelas family
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
2024-03-16 23:28
Reported
2024-03-16 23:31
Platform
win7-20240221-en
Max time kernel
149s
Max time network
123s
Command Line
Signatures
Urelas
Detects executables built or packed with MPress PE compressor
| 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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:\Users\Admin\AppData\Local\Temp\udcob.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\osmop.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\udcob.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 |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe
"C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe"
C:\Users\Admin\AppData\Local\Temp\udcob.exe
"C:\Users\Admin\AppData\Local\Temp\udcob.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\_uinsey.bat" "
C:\Users\Admin\AppData\Local\Temp\osmop.exe
"C:\Users\Admin\AppData\Local\Temp\osmop.exe"
Network
| Country | Destination | Domain | Proto |
| KR | 218.54.31.226:11110 | tcp | |
| KR | 1.234.83.146:11170 | tcp | |
| KR | 218.54.31.165:11110 | tcp | |
| JP | 133.242.129.155:11110 | tcp |
Files
memory/2876-0-0x0000000000400000-0x000000000047E000-memory.dmp
\Users\Admin\AppData\Local\Temp\udcob.exe
| MD5 | 57e451eb91e28a7cec675ba5aca354eb |
| SHA1 | 2c2a5fad06f8e50dcaebe7da9f5d8994d287e1cc |
| SHA256 | 76ac64ce057ced44886a2f952f60f62e7ca3bd20a78ec46134d32d1e44f2f117 |
| SHA512 | 6467fe5adce91e80d1d769b752cb1efe39b3e7f79f5470736339bd2327f68fd8807755c7720c4224a856ddeeba9a18f0584c67d02bc2b10c3aa9968669a66746 |
memory/2876-17-0x0000000000400000-0x000000000047E000-memory.dmp
memory/3036-18-0x0000000000400000-0x000000000047E000-memory.dmp
memory/2876-9-0x0000000002760000-0x00000000027DE000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\_uinsey.bat
| MD5 | 08e43bba9c06ed96ff729585579b94b4 |
| SHA1 | 052a467d049282d5759e6d5bd7469adfa88e3e07 |
| SHA256 | 60d3d18edacb0caf0a089c7de9d5e30ee2e00dd9332f82c72282c8c1d8fdc773 |
| SHA512 | bb17882ac258e50d99be40b2724ed41071c4b22151de259ca3b2137bea742e61536068169dd7b0a0a2f81571d0ccb928147ede90d07b1a63fa472ed8a0e58001 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | abea7a1dd4e1b042b74ae4e46408fcba |
| SHA1 | 6f5551b28ff8169df7a98a5bbfdde139f6958363 |
| SHA256 | 6335694bcf60aa975085cb3ac758d7cfc58940a1752fdcb2accb636f911357e4 |
| SHA512 | 867265c5d033abe49805dbedc64f65c8355f78bcd5777d56989f9ed36a75939f3c90ee4e9af05771267143cf5380e3991f49c9b223c9fafe4c3333011da53d37 |
memory/3036-21-0x0000000000400000-0x000000000047E000-memory.dmp
memory/3036-37-0x0000000002D60000-0x0000000002E15000-memory.dmp
memory/3036-36-0x0000000000400000-0x000000000047E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\osmop.exe
| MD5 | fab53c81b620722a144f35bc23c97605 |
| SHA1 | 69ae25c3a0828835de0610d89120b6fe901c1287 |
| SHA256 | 8ffc31af2c7905bbcb0149f4fee1201d12e7bd974d3e1a8645ef8754c9e9a514 |
| SHA512 | 15a9c97bc55dc1e77b0fffb9629e11f30367fb18bf95f6f35ffac0f01e948108614aa7970872d10403068df9ba983a1e4c8af7f1e99357d9a5b406b990459d3b |
memory/1228-38-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-40-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-41-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-42-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-43-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-44-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1228-45-0x0000000000400000-0x00000000004B5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-16 23:28
Reported
2024-03-16 23:31
Platform
win10v2004-20240226-en
Max time kernel
151s
Max time network
151s
Command Line
Signatures
Urelas
Detects executables built or packed with MPress PE compressor
| 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 |
| N/A | N/A | N/A | N/A |
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\byxuk.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\byxuk.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\jyhik.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 |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe
"C:\Users\Admin\AppData\Local\Temp\b9d3afe2e1978b9cc83d3e76a46fcedb7f8c6693edc517f918d310de943cbee8.exe"
C:\Users\Admin\AppData\Local\Temp\byxuk.exe
"C:\Users\Admin\AppData\Local\Temp\byxuk.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_uinsey.bat" "
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=3944 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
C:\Users\Admin\AppData\Local\Temp\jyhik.exe
"C:\Users\Admin\AppData\Local\Temp\jyhik.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.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 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| KR | 218.54.31.226:11110 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.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 | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 114.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| KR | 1.234.83.146:11170 | tcp | |
| KR | 218.54.31.165:11110 | tcp | |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| JP | 133.242.129.155:11110 | tcp | |
| 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 | 8.8.8.8:53 | 11.179.89.13.in-addr.arpa | udp |
Files
memory/4668-0-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4668-3-0x0000000000400000-0x000000000047E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\byxuk.exe
| MD5 | 50a50ee1133585b24e4d2a3898b7ba94 |
| SHA1 | ac463730a7235a38d8e38a5e23a0136211a05c1d |
| SHA256 | e24ba90fb24de87564ac8e5fa9d6326b0cffdb861113251e99e9eae0370bb5cb |
| SHA512 | 3b2a95d6cf71ef94907b18ba10fd52ae65942793dddb14bd8e7fa53cbe858ddf2b500b5303c5cd6e4dd74622647c518982cb68b0e3b3de1363f83ad8c53c518a |
memory/4668-15-0x0000000000400000-0x000000000047E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\_uinsey.bat
| MD5 | 08e43bba9c06ed96ff729585579b94b4 |
| SHA1 | 052a467d049282d5759e6d5bd7469adfa88e3e07 |
| SHA256 | 60d3d18edacb0caf0a089c7de9d5e30ee2e00dd9332f82c72282c8c1d8fdc773 |
| SHA512 | bb17882ac258e50d99be40b2724ed41071c4b22151de259ca3b2137bea742e61536068169dd7b0a0a2f81571d0ccb928147ede90d07b1a63fa472ed8a0e58001 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | c16c12a1a0ec4ab7e5f84e76dda0186a |
| SHA1 | 251ae79b093dcd8d2515924a11a0a86119070caa |
| SHA256 | 519c93c5b7e45487e89368b917b98ab38a2bd544511d23521f0ea43a5c7cfb54 |
| SHA512 | de7582981a02f5e5037755adec24a7ccd526ad6a0de33badac46336ff0faca161e32358862df287dd83c881ffb39bf30996ecf4c7d6c6304afeac90a25a914bc |
memory/3636-18-0x0000000000400000-0x000000000047E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\jyhik.exe
| MD5 | d17386016b392ffaf910ccaa605985ba |
| SHA1 | 00c7812e0ffc9dc64b62dfc79640d3af84ec369f |
| SHA256 | c9f0b39e52ee23dab9877e62020b68abb03085b469232d3d9e5b6438900a1b39 |
| SHA512 | d11942dc26dec746cb0e9e253503807f68adecd631492ea9fdff146fb4019cc72460fb4c6ec8ef1f97e26e0f5bac7a4c227937d49d3798c369bc18082142e049 |
memory/3636-34-0x0000000000400000-0x000000000047E000-memory.dmp
memory/1192-35-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1192-37-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1192-39-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1192-40-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1192-41-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1192-42-0x0000000000400000-0x00000000004B5000-memory.dmp