Malware Analysis Report

2024-11-16 13:24

Sample ID 241009-ytqy5ssgnl
Target 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN
SHA256 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1ef
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

225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1ef

Threat Level: Known bad

The file 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Checks computer location settings

Deletes itself

Loads dropped DLL

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-09 20:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-09 20:04

Reported

2024-10-09 20:07

Platform

win7-20240903-en

Max time kernel

111s

Max time network

71s

Command Line

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.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\poldge.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\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\poldge.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\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "

Network

Country Destination Domain Proto
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
KR 218.54.28.240:11150 tcp

Files

memory/2364-0-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 670ad8f4163632d38982c3fe71c1c841
SHA1 ce0a04cfcff12a9d796b730551376b0c5d697e6e
SHA256 3381868c5867ac676d180ae120b50bed4ab8c1888508ad8a96fc5a2e9c01f166
SHA512 085849b3d0137443ef8f4f20f514b461ac6e8a2250d25d093abc9c4d9758e087edf94a1260cd78db84f5dc137da8605f52a9322641bbb811e17a68ba8321455a

memory/2164-10-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2364-8-0x0000000002330000-0x000000000236B000-memory.dmp

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

MD5 bf6c4086be51b071163fd7596f32a7ee
SHA1 e3a8c94485f15eaf11ff0b801257e116dc1ee8bb
SHA256 35862351686091219f9596d157b2ed112343daece3b9003a3a0b1074df6b9d4c
SHA512 fedb3bc7e6dcd1ea8dc1295fe68acb723698c3a0f2621c6e370e22e0e70afeb0b46ab7fdd0ad6a81f91f42d9e6d06b1f2cc147c2ce30ba7d47b114282f8c7ed3

memory/2364-19-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/2164-22-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2164-29-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-09 20:04

Reported

2024-10-09 20:07

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\poldge.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\poldge.exe N/A
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\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

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

"C:\Users\Admin\AppData\Local\Temp\poldge.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 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 139.190.18.2.in-addr.arpa udp
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 101.11.19.2.in-addr.arpa udp
KR 218.54.28.240:11150 tcp
US 8.8.8.8:53 134.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 142.72.21.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/3668-0-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 775f4cc79413046e15eb5737b460d246
SHA1 b5ca4fcc05a99a494005a8464583a3efb57c2a1c
SHA256 35a19e7525c0a54a447c12164e646438839aad78bf3655345ba2e260c8848244
SHA512 682b5a30220b1d47cfee6861efcdaefe7aa525e0c820b2177d6eef6d18a8bc51b1f7fc7237aa6a76b07e15513c76eb581e7842b0b27d5b7b6a1396188a636d5a

memory/3668-14-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 bf6c4086be51b071163fd7596f32a7ee
SHA1 e3a8c94485f15eaf11ff0b801257e116dc1ee8bb
SHA256 35862351686091219f9596d157b2ed112343daece3b9003a3a0b1074df6b9d4c
SHA512 fedb3bc7e6dcd1ea8dc1295fe68acb723698c3a0f2621c6e370e22e0e70afeb0b46ab7fdd0ad6a81f91f42d9e6d06b1f2cc147c2ce30ba7d47b114282f8c7ed3

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

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/2968-17-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2968-23-0x0000000000400000-0x000000000043B000-memory.dmp