Malware Analysis Report

2024-11-16 13:28

Sample ID 240814-dctngszfnp
Target cd94536d67787cb12cac968c029cca80N.exe
SHA256 c0e61c8fbc6b320c01761eb5d90502565ea16ecfe5d74deb59bc8382aac48070
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

c0e61c8fbc6b320c01761eb5d90502565ea16ecfe5d74deb59bc8382aac48070

Threat Level: Known bad

The file cd94536d67787cb12cac968c029cca80N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Deletes itself

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-14 02:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-14 02:52

Reported

2024-08-14 02:54

Platform

win7-20240704-en

Max time kernel

89s

Max time network

87s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cd94536d67787cb12cac968c029cca80N.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\cd94536d67787cb12cac968c029cca80N.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\cd94536d67787cb12cac968c029cca80N.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\cd94536d67787cb12cac968c029cca80N.exe

"C:\Users\Admin\AppData\Local\Temp\cd94536d67787cb12cac968c029cca80N.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/2232-0-0x0000000000300000-0x0000000000328000-memory.dmp

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

MD5 c73746ed122d9f48cdbb5bd6ce5f1e31
SHA1 c7dafb47d87c7af55eb7147231d88e4b19ae3b79
SHA256 40fbc9b82a7fbf5e6ed9e75bcf3ae2a43b3335a0d9de954f6592028e29b0f188
SHA512 ca117cb009d546c25ffb4f5816b07aa93e4d6b6772b7bfcba626930091e840b9c7b151efbb974c6350e9da2f87ba6ece800cf3fbbe0e7f40ab60d7af9e3d33ee

memory/2232-16-0x0000000001E10000-0x0000000001E38000-memory.dmp

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

MD5 3aac692dde463bbf4cf54c221bbf7b2d
SHA1 0325e2a96895c7b46a9e6a41f64e41b6e4d347a2
SHA256 acf65beec677139eb943d39fbd7f7be1fec7cd4d77664908d75bfd271b026c9d
SHA512 1f97ba0cd8505d5c5942218c5ccaf407f8a1abf4e2bc0f22f99dd50566ba339123aa9aba9760761fc4e8594902239f546c0cded99bdbfbdee556ef415a8e079e

memory/2688-17-0x0000000000D90000-0x0000000000DB8000-memory.dmp

memory/2232-18-0x0000000000300000-0x0000000000328000-memory.dmp

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

MD5 a250860c0687ed9dda488805c025a2d2
SHA1 0c181ed3b46463d35631ca169f0928c33a1da389
SHA256 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37
SHA512 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a

memory/2688-21-0x0000000000D90000-0x0000000000DB8000-memory.dmp

memory/2688-23-0x0000000000D90000-0x0000000000DB8000-memory.dmp

memory/2688-29-0x0000000000D90000-0x0000000000DB8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-14 02:52

Reported

2024-08-14 02:54

Platform

win10v2004-20240802-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cd94536d67787cb12cac968c029cca80N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\cd94536d67787cb12cac968c029cca80N.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\cd94536d67787cb12cac968c029cca80N.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\cd94536d67787cb12cac968c029cca80N.exe

"C:\Users\Admin\AppData\Local\Temp\cd94536d67787cb12cac968c029cca80N.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 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.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 52.111.227.11:443 tcp
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
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
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/1468-0-0x00000000006A0000-0x00000000006C8000-memory.dmp

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

MD5 ca8b1550bf94c098af1837c12698f4fa
SHA1 e9215a3afa9df75fcb4f706f1c1964721643fca4
SHA256 32f95e5508f61bd057df49bc3630122343fd6a7d07deeb269a0a188b771c87ac
SHA512 d0f32d59cc29c64e0ed4ca6f18273febd1b9894a9622c87eb8096933772b39345ec229f31105c37a8e5ad6762e11e95829139d92706f4c159277d5f8bb4aeed2

memory/2676-13-0x0000000000EC0000-0x0000000000EE8000-memory.dmp

memory/1468-18-0x00000000006A0000-0x00000000006C8000-memory.dmp

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

MD5 3aac692dde463bbf4cf54c221bbf7b2d
SHA1 0325e2a96895c7b46a9e6a41f64e41b6e4d347a2
SHA256 acf65beec677139eb943d39fbd7f7be1fec7cd4d77664908d75bfd271b026c9d
SHA512 1f97ba0cd8505d5c5942218c5ccaf407f8a1abf4e2bc0f22f99dd50566ba339123aa9aba9760761fc4e8594902239f546c0cded99bdbfbdee556ef415a8e079e

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

MD5 a250860c0687ed9dda488805c025a2d2
SHA1 0c181ed3b46463d35631ca169f0928c33a1da389
SHA256 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37
SHA512 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a

memory/2676-21-0x0000000000EC0000-0x0000000000EE8000-memory.dmp

memory/2676-23-0x0000000000EC0000-0x0000000000EE8000-memory.dmp

memory/2676-29-0x0000000000EC0000-0x0000000000EE8000-memory.dmp