Malware Analysis Report

2024-11-16 13:28

Sample ID 240728-g6556awdjg
Target 62047ff726957cde33910db4cdabccc0N.exe
SHA256 2a61b9a53eab4f3367910d640a56f91efed198375bd01e2a66f0c3dc303f268d
Tags
urelas discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2a61b9a53eab4f3367910d640a56f91efed198375bd01e2a66f0c3dc303f268d

Threat Level: Known bad

The file 62047ff726957cde33910db4cdabccc0N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Loads dropped DLL

Checks computer location settings

Deletes itself

Executes dropped EXE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-28 06:26

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-28 06:26

Reported

2024-07-28 06:28

Platform

win7-20240708-en

Max time kernel

89s

Max time network

91s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe"

Signatures

Urelas

trojan 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\62047ff726957cde33910db4cdabccc0N.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe

"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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/2252-0-0x0000000000BB0000-0x0000000000BD5000-memory.dmp

\Users\Admin\AppData\Local\Temp\biudfw.exe

MD5 fe3216fc538ad5f682b44e82570df674
SHA1 ad2e7edc4e315541f0a4a9184b03c6662711d3e8
SHA256 e9a8a78da442040322e8d4a30720671a431b85f859876e9c4770f008c2918117
SHA512 d638af478917f59d036786682f96eecfd7fee322b2b1aece6925a420ad97eeba6bbad5ca74230ecfd47ea5acc60c7607609d198f6df379701c60c6148438b149

memory/2776-10-0x0000000000B60000-0x0000000000B85000-memory.dmp

memory/2252-9-0x00000000004B0000-0x00000000004D5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

MD5 331d9128048d683331e5fcedf7a312b5
SHA1 e7933eefb989b83d24228475bfd485bd580e7671
SHA256 cf37066b11b4d00b6679168810bde72c9c4893e94203549585aef55521a80b17
SHA512 096e541dfdee719747defe325dbd5486b313b94e7e63fa2b6ef1ba799f7d85ecbed8528a71839c4c98b92300cb163984674ed30967dc6e9e55c276c4430b26c3

memory/2252-19-0x0000000000BB0000-0x0000000000BD5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/2776-22-0x0000000000B60000-0x0000000000B85000-memory.dmp

memory/2776-24-0x0000000000B60000-0x0000000000B85000-memory.dmp

memory/2776-31-0x0000000000B60000-0x0000000000B85000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-28 06:26

Reported

2024-07-28 06:28

Platform

win10v2004-20240704-en

Max time kernel

100s

Max time network

104s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe

"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4068-0-0x0000000000050000-0x0000000000075000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\biudfw.exe

MD5 f74a4d615920e474e1107553d221c62f
SHA1 0d973e6d3dddced91cb55b4a4f1bc6e53cb2bd07
SHA256 292cc6eeaa01be68d0126e400756b70ca4355e6baa2f1588839b4397bee9337d
SHA512 eb7dde1df8478fbac8b9eb43b84d6f440b0d2ff57fe6ed2e30fe2933414a479a7f26ec03ea15c1bfe5f104adfb0862ff8f86e3d7150497007c9c239a27c6bb39

memory/2456-15-0x0000000000F30000-0x0000000000F55000-memory.dmp

memory/4068-17-0x0000000000050000-0x0000000000075000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

MD5 331d9128048d683331e5fcedf7a312b5
SHA1 e7933eefb989b83d24228475bfd485bd580e7671
SHA256 cf37066b11b4d00b6679168810bde72c9c4893e94203549585aef55521a80b17
SHA512 096e541dfdee719747defe325dbd5486b313b94e7e63fa2b6ef1ba799f7d85ecbed8528a71839c4c98b92300cb163984674ed30967dc6e9e55c276c4430b26c3

C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/2456-20-0x0000000000F30000-0x0000000000F55000-memory.dmp

memory/2456-22-0x0000000000F30000-0x0000000000F55000-memory.dmp

memory/2456-28-0x0000000000F30000-0x0000000000F55000-memory.dmp