Malware Analysis Report

2024-11-16 13:28

Sample ID 240813-wt7ksatcqq
Target 55ae6ad49d02908444ba196526e9bfd0N.exe
SHA256 d91dcc301722692594664654a2aa3feb53c4fbdf0c10cf9f1b6790a59e982298
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

d91dcc301722692594664654a2aa3feb53c4fbdf0c10cf9f1b6790a59e982298

Threat Level: Known bad

The file 55ae6ad49d02908444ba196526e9bfd0N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Checks computer location settings

Deletes itself

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-13 18:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-13 18:13

Reported

2024-08-13 18:16

Platform

win7-20240704-en

Max time kernel

119s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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\55ae6ad49d02908444ba196526e9bfd0N.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\55ae6ad49d02908444ba196526e9bfd0N.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\55ae6ad49d02908444ba196526e9bfd0N.exe

"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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/1188-0-0x0000000000400000-0x0000000000428000-memory.dmp

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

MD5 50048ce65981b4b5bf756e8553a358fa
SHA1 3f61ea5e5bcecdbf2848aafef726e84a6063c9c3
SHA256 7f6b57ed37b4d8a7871fff14662cd93cb8d8b9f96688f898747f011822040709
SHA512 24bd4944a0b80864242f039fb2199352f1b98320b8cfe3538add1d0ba0b244a5576566e4ede75fd730b52b971afe59e815c6b3a5ccab3de081162439492f1eed

memory/1188-6-0x0000000001CE0000-0x0000000001D08000-memory.dmp

memory/2640-10-0x0000000000400000-0x0000000000428000-memory.dmp

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

MD5 0880417ff4f9404f0041785383084e0d
SHA1 0dfe2d0fc025e5af7ee986e6a3b050ce43fc5a05
SHA256 b18ea1807ec1546cfc0da9fb9db95251bb3cf4c12f2d01bab1e8ab22e4059805
SHA512 f2a794e51ebeb95532059afd1d1607afff7755ab5ef04682a27ceba59ec4c39ab9ced1e6654462ba6cc899776900e4c1320888a0349a67b35d41f270f2e9c0f9

memory/1188-19-0x0000000000400000-0x0000000000428000-memory.dmp

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

MD5 b4a86880004da8726288d7ec954885a8
SHA1 1bab1cfbdc2c540246210bc7852f8fe7e8357b31
SHA256 c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46
SHA512 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4

memory/2640-22-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2640-24-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2640-30-0x0000000000400000-0x0000000000428000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-13 18:13

Reported

2024-08-13 18:15

Platform

win10v2004-20240802-en

Max time kernel

105s

Max time network

107s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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\55ae6ad49d02908444ba196526e9bfd0N.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\55ae6ad49d02908444ba196526e9bfd0N.exe

"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/3980-0-0x0000000000400000-0x0000000000428000-memory.dmp

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

MD5 44253b16ac3dc7a69853bf8a66c6f1ce
SHA1 cb0f6618de766bc37833bca036c8a726acd57a79
SHA256 b5e987cf4fcb756c29381fb8e81a987f4e693506f2ff2374fb0608bd0350c101
SHA512 5171b2d41b111ed042842d9f26c6df63b95566700fba8a1e7ece2607fb736d1aa2d2c403ce75e46d13ef89ee5c6f95ead4f1367d98ea8db35396a13ab2fdefab

memory/4968-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3980-14-0x0000000000400000-0x0000000000428000-memory.dmp

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

MD5 0880417ff4f9404f0041785383084e0d
SHA1 0dfe2d0fc025e5af7ee986e6a3b050ce43fc5a05
SHA256 b18ea1807ec1546cfc0da9fb9db95251bb3cf4c12f2d01bab1e8ab22e4059805
SHA512 f2a794e51ebeb95532059afd1d1607afff7755ab5ef04682a27ceba59ec4c39ab9ced1e6654462ba6cc899776900e4c1320888a0349a67b35d41f270f2e9c0f9

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

MD5 b4a86880004da8726288d7ec954885a8
SHA1 1bab1cfbdc2c540246210bc7852f8fe7e8357b31
SHA256 c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46
SHA512 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4

memory/4968-17-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4968-19-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4968-26-0x0000000000400000-0x0000000000428000-memory.dmp