Malware Analysis Report

2024-11-16 13:27

Sample ID 240728-h93pwaydng
Target 6c444d97906346930901ba6270b704a0N.exe
SHA256 168fb7063c7124b99bc523aa831fc3bccc5f64f3b3699911157b258bc883c834
Tags
urelas discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

168fb7063c7124b99bc523aa831fc3bccc5f64f3b3699911157b258bc883c834

Threat Level: Known bad

The file 6c444d97906346930901ba6270b704a0N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Deletes itself

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-28 07:27

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-28 07:27

Reported

2024-07-28 07:34

Platform

win10v2004-20240709-en

Max time kernel

108s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6c444d97906346930901ba6270b704a0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\6c444d97906346930901ba6270b704a0N.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\6c444d97906346930901ba6270b704a0N.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\6c444d97906346930901ba6270b704a0N.exe

"C:\Users\Admin\AppData\Local\Temp\6c444d97906346930901ba6270b704a0N.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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.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 218.54.47.74:11150 tcp
KR 218.54.47.76:11170 tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
KR 218.54.47.77:11150 tcp
NL 52.111.243.29:443 tcp
US 8.8.8.8:53 13.227.111.52.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
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1072-0-0x0000000000580000-0x00000000005A6000-memory.dmp

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

MD5 95d700a5a67ebbd78b5d280b574661ee
SHA1 f947b96343538dba0371e09e8eff1f22914ff800
SHA256 50b642b5b37f9f6f49358111350dd616634e813d8643d3efc971b202cb385712
SHA512 d01b9c28cc31de1c7cf3e6896f4e8439cee3b6a67e43f5f5eef232da58f41875499c6e7e27314265431407e1836acc71c81013b816cfc51f5056ceae2e2ae3c7

memory/4196-9-0x00000000005A0000-0x00000000005C6000-memory.dmp

memory/1072-14-0x0000000000580000-0x00000000005A6000-memory.dmp

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

MD5 ac92f394868bdc5b84692156171d2d6e
SHA1 2fb1837134d6faa8ffd63b3ff79725dea187c5a0
SHA256 d572f192902d38f9d318306a2beb77f9fa7c79aef5010dd17152323ce80d8850
SHA512 e85a8ca9dcd8810ce1d99978499a0be7edb10f8ef56b2e33c8c80d733098659ede0f4d912a1843567a8333becdf8cc2d39dc0711c69b4783d0db80e983d9c520

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

MD5 b4a86880004da8726288d7ec954885a8
SHA1 1bab1cfbdc2c540246210bc7852f8fe7e8357b31
SHA256 c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46
SHA512 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4

memory/4196-17-0x00000000005A0000-0x00000000005C6000-memory.dmp

memory/4196-19-0x00000000005A0000-0x00000000005C6000-memory.dmp

memory/4196-25-0x00000000005A0000-0x00000000005C6000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-28 07:27

Reported

2024-07-28 07:34

Platform

win7-20240704-en

Max time kernel

119s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6c444d97906346930901ba6270b704a0N.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\6c444d97906346930901ba6270b704a0N.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\6c444d97906346930901ba6270b704a0N.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\6c444d97906346930901ba6270b704a0N.exe

"C:\Users\Admin\AppData\Local\Temp\6c444d97906346930901ba6270b704a0N.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/588-0-0x00000000009E0000-0x0000000000A06000-memory.dmp

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

MD5 f7af77b1b1f047739ca3322ef8352b5d
SHA1 210956685ef7045c21400c7c938e4911d3ac1f0f
SHA256 56e726e5c77d9a751829b80e1e6673795aba77610f3bc951c83aa4493169902f
SHA512 6d3471221cf7cfd5a8d41b52360cfc96a3a44b123ed5fd40a536f7d873c7e816ca6f68d338a459e0422466bc422bc9d9ee40b864727cc5211c299b23b79b6ab3

memory/2804-10-0x0000000001380000-0x00000000013A6000-memory.dmp

memory/588-9-0x0000000000480000-0x00000000004A6000-memory.dmp

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

MD5 ac92f394868bdc5b84692156171d2d6e
SHA1 2fb1837134d6faa8ffd63b3ff79725dea187c5a0
SHA256 d572f192902d38f9d318306a2beb77f9fa7c79aef5010dd17152323ce80d8850
SHA512 e85a8ca9dcd8810ce1d99978499a0be7edb10f8ef56b2e33c8c80d733098659ede0f4d912a1843567a8333becdf8cc2d39dc0711c69b4783d0db80e983d9c520

memory/588-18-0x00000000009E0000-0x0000000000A06000-memory.dmp

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

MD5 b4a86880004da8726288d7ec954885a8
SHA1 1bab1cfbdc2c540246210bc7852f8fe7e8357b31
SHA256 c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46
SHA512 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4

memory/2804-21-0x0000000001380000-0x00000000013A6000-memory.dmp

memory/2804-23-0x0000000001380000-0x00000000013A6000-memory.dmp

memory/2804-29-0x0000000001380000-0x00000000013A6000-memory.dmp