Analysis Overview
SHA256
7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59
Threat Level: Known bad
The file 7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59 was found to be: Known bad.
Malicious Activity Summary
Urelas
Urelas family
Deletes itself
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-10 22:31
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-10 22:31
Reported
2024-03-10 22:33
Platform
win7-20240221-en
Max time kernel
119s
Max time network
124s
Command Line
Signatures
Urelas
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\biudfw.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe
"C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe"
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
"C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
Network
| Country | Destination | Domain | Proto |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| KR | 218.54.47.76:11170 | tcp | |
| KR | 218.54.47.77:11150 | tcp |
Files
memory/2812-0-0x0000000000960000-0x0000000000987000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | e5451e5ffeb42e63dc77fefdb5ce1487 |
| SHA1 | d3970fedddbee411a7fc69ee25380b32d9ba55df |
| SHA256 | c04c3704bd14b3cd4b8dcef9a5b5a6f7a4ae017f82de70e11c34477ebf729c8b |
| SHA512 | a62cebc57608e9cd22a523a21048ff7383b532abbfc89cf6c27d71158ae8c492b455f241e73c3808b8726a13904d2158d6d48e836190aaf329b5f21a8716981f |
memory/1496-18-0x0000000000E00000-0x0000000000E27000-memory.dmp
memory/2812-17-0x0000000000960000-0x0000000000987000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | b8177da482e6871be0a7f46509b194bf |
| SHA1 | d8e101d7d995ad5779a00514db9de0019fd17656 |
| SHA256 | 65567a41de60d406a6d14fa0c6adda4245550c2b4f3f4ef6f8ca3dd9e3bcdcbd |
| SHA512 | a7b1035a267c055365e2ba403ec87313b991535c117512e69997fc15cc11331c3c82d3327ced0ffe7fe94381e38fa8cf8fdef93e5ed8b1667ed0841b7deb1f11 |
memory/2812-10-0x0000000000530000-0x0000000000557000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | f0d42f2e44d35f66afa6c7a98d053021 |
| SHA1 | f874284acb7ed4b80e2733ed4f66656bd2c5447d |
| SHA256 | d2060822260cd38f5fc68b1f3b9f9b787b250e1a9fa417be79cdc692ca066f8d |
| SHA512 | d5b9a5e504276623574ba2c16e6d305c86b20ff3e6353dbe251e04287583c27d825fddfe4325530c249cc95ddd3e0674c86acdf2e7f4bd3c3404eab51c022a94 |
memory/1496-21-0x0000000000E00000-0x0000000000E27000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-10 22:31
Reported
2024-03-10 22:33
Platform
win10v2004-20240226-en
Max time kernel
92s
Max time network
155s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe
"C:\Users\Admin\AppData\Local\Temp\7fbb1b93f12e970445568a995b26b2327d14e64e4683082844719734fa56fe59.exe"
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
"C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
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 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.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 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/3536-0-0x0000000000090000-0x00000000000B7000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 718e19a1c0f7a9eb39023bd7da27793e |
| SHA1 | 8d723737df763f87d5ef84747c0afbde9e5fbbce |
| SHA256 | 03c53026e0e2510836ad1a59371236f25718917b8fabf928b2cb0edbf68ddc0f |
| SHA512 | 6dd6e6f9fd5378db799bba789df641567a391e62d393eccba8ec36143cdc6017d317307e050c7f0a583b22b3b977eac1e120e96f268be140aa4b00b0f492ce4b |
memory/4876-14-0x00000000009A0000-0x00000000009C7000-memory.dmp
memory/3536-17-0x0000000000090000-0x00000000000B7000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | e5451e5ffeb42e63dc77fefdb5ce1487 |
| SHA1 | d3970fedddbee411a7fc69ee25380b32d9ba55df |
| SHA256 | c04c3704bd14b3cd4b8dcef9a5b5a6f7a4ae017f82de70e11c34477ebf729c8b |
| SHA512 | a62cebc57608e9cd22a523a21048ff7383b532abbfc89cf6c27d71158ae8c492b455f241e73c3808b8726a13904d2158d6d48e836190aaf329b5f21a8716981f |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | f0d42f2e44d35f66afa6c7a98d053021 |
| SHA1 | f874284acb7ed4b80e2733ed4f66656bd2c5447d |
| SHA256 | d2060822260cd38f5fc68b1f3b9f9b787b250e1a9fa417be79cdc692ca066f8d |
| SHA512 | d5b9a5e504276623574ba2c16e6d305c86b20ff3e6353dbe251e04287583c27d825fddfe4325530c249cc95ddd3e0674c86acdf2e7f4bd3c3404eab51c022a94 |
memory/4876-20-0x00000000009A0000-0x00000000009C7000-memory.dmp