Analysis Overview
SHA256
750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b
Threat Level: Known bad
The file 750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b was found to be: Known bad.
Malicious Activity Summary
UPX dump on OEP (original entry point)
Urelas
UPX dump on OEP (original entry point)
Loads dropped DLL
UPX packed file
Checks computer location settings
Deletes itself
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-16 21:14
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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-16 21:14
Reported
2024-03-16 21:17
Platform
win7-20240221-en
Max time kernel
153s
Max time network
133s
Command Line
Signatures
Urelas
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 |
| 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\pygoc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ohkir.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pygoc.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 |
| 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\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.exe
"C:\Users\Admin\AppData\Local\Temp\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.exe"
C:\Users\Admin\AppData\Local\Temp\pygoc.exe
"C:\Users\Admin\AppData\Local\Temp\pygoc.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\_uinsey.bat" "
C:\Users\Admin\AppData\Local\Temp\ohkir.exe
"C:\Users\Admin\AppData\Local\Temp\ohkir.exe"
Network
| Country | Destination | Domain | Proto |
| KR | 218.54.31.226:11120 | tcp | |
| KR | 1.234.83.146:11170 | tcp | |
| KR | 218.54.30.235:11120 | tcp | |
| JP | 133.242.129.155:11120 | tcp |
Files
memory/1252-0-0x00000000013D0000-0x0000000001461000-memory.dmp
\Users\Admin\AppData\Local\Temp\pygoc.exe
| MD5 | a52f173724a7b0b0a6d71dda0b8c1b09 |
| SHA1 | 1239fcf121521f5efdcd5cacc84385c3aa7517c5 |
| SHA256 | ff940db8cefeb58fe3ff1da8436fced49bc1a50e4c6fb6d46543ef9baaadcd69 |
| SHA512 | 66accd631a7a569c7b3d0a64b248d75a25f2ce2d6bb9b7c89326cf9bd1960b7c6670746d0b63eb595be5cc3e42cfd0b1d61e2092de35fef18931335a9f2c6878 |
memory/1252-9-0x00000000012C0000-0x0000000001351000-memory.dmp
memory/3052-10-0x0000000000BF0000-0x0000000000C81000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\_uinsey.bat
| MD5 | 9eb0662062290c9925510552d7049754 |
| SHA1 | f9c1f3c9b51d68a50f51e4b2d39302d95f5263ff |
| SHA256 | 49c60b3efcd404aead3541b79d0f9eb19f05d5461726ca5000a13123fde8f1df |
| SHA512 | 3d879450fda5c8543405fffabc01c091d293217aabe82c1ac85af440d5e18356418dc78caae227e3fb425e792c9aec6ffe094cf424e2b0b9b7fbfafaa042cce3 |
memory/1252-18-0x00000000013D0000-0x0000000001461000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 04574147939b1cae56bfbb43774102f6 |
| SHA1 | e41702d1c5c3543b9e0bb092c579729b17688ded |
| SHA256 | 637b7c17a2710c2d4fe1177375346420fb792601f74b22f1e861b8fefadecb6d |
| SHA512 | 7c91c840fa19c6cf5b3534a670f8fc748b9dd377d1db15bc335d9f5b933ca679969a272442cd135aa1c680e21aa50891bed76c71d034ecef91ea0ab9b21eade4 |
memory/3052-21-0x0000000000BF0000-0x0000000000C81000-memory.dmp
\Users\Admin\AppData\Local\Temp\ohkir.exe
| MD5 | 3e2c3fcbe665bd3e3a1b1a8728db28a0 |
| SHA1 | 11cb41fef079acf33a425a6df62c1546ad7c4fc8 |
| SHA256 | 08706903c691ff14b5fb5a509988ed039a51311d2ce1b463c624dad007881804 |
| SHA512 | 464c9acf7fdf670559e7b6d7178a8a4e3e597c1da0bbe2c77ea5e982fff2e0aec9a94c5a09fa244c5a467aac60d4035a357d869b793f23f8b7c3c250fd63ae1d |
memory/3052-34-0x0000000002DC0000-0x0000000002E7B000-memory.dmp
memory/3052-36-0x0000000000BF0000-0x0000000000C81000-memory.dmp
memory/1888-38-0x00000000013E0000-0x000000000149B000-memory.dmp
memory/1888-39-0x0000000000100000-0x0000000000102000-memory.dmp
memory/1888-41-0x00000000013E0000-0x000000000149B000-memory.dmp
memory/1888-42-0x00000000013E0000-0x000000000149B000-memory.dmp
memory/1888-43-0x0000000000100000-0x0000000000102000-memory.dmp
memory/1888-44-0x00000000013E0000-0x000000000149B000-memory.dmp
memory/1888-45-0x00000000013E0000-0x000000000149B000-memory.dmp
memory/1888-46-0x00000000013E0000-0x000000000149B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-16 21:14
Reported
2024-03-16 21:17
Platform
win10v2004-20240226-en
Max time kernel
152s
Max time network
154s
Command Line
Signatures
Urelas
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 |
| 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\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.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\woyrf.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\woyrf.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\polob.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 |
| 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\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.exe
"C:\Users\Admin\AppData\Local\Temp\750483a67905f8649c359d1bfc477be5c4d702271fc5956f4884b18859ce200b.exe"
C:\Users\Admin\AppData\Local\Temp\woyrf.exe
"C:\Users\Admin\AppData\Local\Temp\woyrf.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=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
C:\Users\Admin\AppData\Local\Temp\polob.exe
"C:\Users\Admin\AppData\Local\Temp\polob.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.178.17.96.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 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| KR | 218.54.31.226:11120 | tcp | |
| GB | 142.250.187.202:443 | tcp | |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| KR | 1.234.83.146:11170 | tcp | |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| KR | 218.54.30.235:11120 | tcp | |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 201.178.17.96.in-addr.arpa | udp |
| JP | 133.242.129.155:11120 | tcp | |
| US | 8.8.8.8:53 | 205.47.74.20.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 209.143.182.52.in-addr.arpa | udp |
Files
memory/5604-0-0x0000000000440000-0x00000000004D1000-memory.dmp
memory/5604-1-0x0000000000440000-0x00000000004D1000-memory.dmp
memory/5604-4-0x0000000000440000-0x00000000004D1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\woyrf.exe
| MD5 | 027ce4ca5250ac9b7542b1ddca6557f9 |
| SHA1 | 1a34f254919616dce0a8f316773831913944d403 |
| SHA256 | a874c4b1e612a66d936af9c0c0216d0d2daaf99a969054082bd74bbe361958df |
| SHA512 | 7861acad142c4249b69c471420f818a2b8aeaf8e6b4b00d55be0923f9b9ea9895edb5c452d5e388d0dd9c13f09f2bb202972f487c592d7e0bd90aaded4bddbb1 |
memory/5468-11-0x00000000007D0000-0x0000000000861000-memory.dmp
memory/5604-16-0x0000000000440000-0x00000000004D1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\_uinsey.bat
| MD5 | 9eb0662062290c9925510552d7049754 |
| SHA1 | f9c1f3c9b51d68a50f51e4b2d39302d95f5263ff |
| SHA256 | 49c60b3efcd404aead3541b79d0f9eb19f05d5461726ca5000a13123fde8f1df |
| SHA512 | 3d879450fda5c8543405fffabc01c091d293217aabe82c1ac85af440d5e18356418dc78caae227e3fb425e792c9aec6ffe094cf424e2b0b9b7fbfafaa042cce3 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 1b715d3a8dd472692c378fca767b7795 |
| SHA1 | 5b7e87657815af9f061ffadb2bb41670c23c16f0 |
| SHA256 | b43427d8c6b4bd2ec287e79e25d4cd4095cd1b51908a1fe78dfdc60988a57392 |
| SHA512 | 7e820ccb3f20a1dbfe123282c1818fa5d427074b1c1203fe9ddd69bfe9099e3dd76f70a76836ee82e19f9a066939bff516c847451f2dfcc473f919c271188262 |
memory/5468-19-0x00000000007D0000-0x0000000000861000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\polob.exe
| MD5 | 1a949a39cc7cfb48e0f4d8e217fa66e7 |
| SHA1 | bcd4510571e607b81c65e97274a10fdb14b2062e |
| SHA256 | 947845b9da57f3fa31050541be54981acc8f8baab3dbb4cacd909a93021859d9 |
| SHA512 | 005d64dd553ee187199c242a3285fdd7a3f7cbb2c4f254844a7d6b069cd10466a8ae54736b2b19dd7d9ff8f69ea374dcaeb1e55fb7d50bff6be133356254eee3 |
memory/3496-36-0x0000000000210000-0x00000000002CB000-memory.dmp
memory/5468-35-0x00000000007D0000-0x0000000000861000-memory.dmp
memory/3496-38-0x00000000025F0000-0x00000000025F2000-memory.dmp
memory/3496-40-0x0000000000210000-0x00000000002CB000-memory.dmp
memory/3496-41-0x0000000000210000-0x00000000002CB000-memory.dmp
memory/3496-42-0x00000000025F0000-0x00000000025F2000-memory.dmp
memory/3496-43-0x0000000000210000-0x00000000002CB000-memory.dmp