Malware Analysis Report

2024-11-16 13:24

Sample ID 241008-ejrm5sxgpk
Target e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45
SHA256 e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45
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

e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45

Threat Level: Known bad

The file e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45 was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Deletes itself

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-08 03:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-08 03:58

Reported

2024-10-08 06:33

Platform

win7-20240903-en

Max time kernel

109s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.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

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:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.exe

"C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.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/1480-0-0x0000000001120000-0x0000000001145000-memory.dmp

memory/1480-6-0x0000000000990000-0x00000000009B5000-memory.dmp

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

MD5 ca26a4c65b370ecd08f507fd211d797e
SHA1 27dffdb5414587bc664e41047aac1bdc62a4303f
SHA256 4394749d0ffa1ce8b8c676465444a5006deb854e38518e2623159a89a73f039b
SHA512 6139d177e0524bc2e94a2f70de866c5b299289c033fb4a1bcbe0b5ebe17b5d41e6aec9214c980440d5f4b68381655b5601ba5d08d0d7272550b4d9d6a4cd0289

memory/1480-17-0x0000000001120000-0x0000000001145000-memory.dmp

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

MD5 392b9598244584ca33cdb0d6dedd4741
SHA1 8c3d39e3c90e5c8e906fe1817d4c427096fb9df3
SHA256 96026e9d1443dfa05f196d715ce5c201dc845fbe761e13d94e9c8c501faa7d09
SHA512 f6ee9f839f42c153effb116b5b9f9c598b70b5c4360ea5bb374456b37f6eb8041e96313fb8bd42cae3114e956c295d350ac5cfc0f802e5ec029639c05bb6fc5a

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/344-20-0x0000000000EE0000-0x0000000000F05000-memory.dmp

memory/344-22-0x0000000000EE0000-0x0000000000F05000-memory.dmp

memory/344-29-0x0000000000EE0000-0x0000000000F05000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-08 03:58

Reported

2024-10-08 10:20

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.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\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.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\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.exe

"C:\Users\Admin\AppData\Local\Temp\e5eefe1651e793cd90eeb1b249b0468bac77692c91d3a2278a8384ede32b4d45.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 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4028-0-0x0000000000110000-0x0000000000135000-memory.dmp

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

MD5 e4e8c2e126d6b7b7cca339e070424fec
SHA1 deec76f8142a6ca4fd097cb817185b052dc15bbf
SHA256 cace96c1e4c87ecf7738f98962a8eb42bc79ebf5d57936173f92a7212c4781a1
SHA512 57a3332cdd294a5849262b83feebe8f6826376d7e24e2392699fbbab67d64c86ae3adca5874ec06cf072ba54969a94e406931e23c28ebfeb0bca8155f0c3e1b1

memory/4028-17-0x0000000000110000-0x0000000000135000-memory.dmp

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

MD5 392b9598244584ca33cdb0d6dedd4741
SHA1 8c3d39e3c90e5c8e906fe1817d4c427096fb9df3
SHA256 96026e9d1443dfa05f196d715ce5c201dc845fbe761e13d94e9c8c501faa7d09
SHA512 f6ee9f839f42c153effb116b5b9f9c598b70b5c4360ea5bb374456b37f6eb8041e96313fb8bd42cae3114e956c295d350ac5cfc0f802e5ec029639c05bb6fc5a

memory/3068-13-0x0000000000440000-0x0000000000465000-memory.dmp

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/3068-20-0x0000000000440000-0x0000000000465000-memory.dmp

memory/3068-22-0x0000000000440000-0x0000000000465000-memory.dmp

memory/3068-28-0x0000000000440000-0x0000000000465000-memory.dmp