Malware Analysis Report

2024-11-16 13:25

Sample ID 241012-2ese7syhjk
Target 62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e
SHA256 62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e
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

62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e

Threat Level: Known bad

The file 62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Deletes itself

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-12 22:30

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-12 22:30

Reported

2024-10-12 22:32

Platform

win7-20240729-en

Max time kernel

89s

Max time network

86s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.exe

"C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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/2308-0-0x0000000000D40000-0x0000000000D65000-memory.dmp

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

MD5 53d56ae67a01c40e9e956928ab3350d3
SHA1 d1a2c008f5a992f73c0afc66790da249cf9506ae
SHA256 3d3e7b4ae5b265480a68278d3ed6f4737f5c041700afcb1658dff5af3dd2db71
SHA512 7f3ff1c91ee837d9fb97b22d3723cae9e6ab734dfeb2aad25d35f61c7e41ce074941cc0374144d95f12507ca21999f02bd77d46b08ce0c16d0e913ac1d0b5659

memory/2308-5-0x0000000000620000-0x0000000000645000-memory.dmp

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

MD5 b7369bcb1bcb9e75f0fb5a3c07a3cafe
SHA1 1e362cb74f1dc8e01e5824f6c251edc854323cde
SHA256 00e4c8725c8ca4cd9aa4d05085854898ae25ff43a56cd757b21c620c2a0a76af
SHA512 a065bb3d32b3a16704d549dad89e354cd8bfe5e40782c82817148e6a79788e897a37672bb0ff4a579f625f7bfa333ba7e2241f9cdbee1629be23b6bbf3eb34cd

memory/2308-18-0x0000000000D40000-0x0000000000D65000-memory.dmp

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/2784-21-0x0000000000890000-0x00000000008B5000-memory.dmp

memory/2784-23-0x0000000000890000-0x00000000008B5000-memory.dmp

memory/2784-29-0x0000000000890000-0x00000000008B5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-12 22:30

Reported

2024-10-12 22:32

Platform

win10v2004-20241007-en

Max time kernel

91s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.exe

"C:\Users\Admin\AppData\Local\Temp\62744ce3b4475009d05b094c05bbd130ee7f151bc449ba1af6fbb56dfbaf413e.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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
KR 218.54.47.77:11150 tcp

Files

memory/4944-0-0x0000000000F60000-0x0000000000F85000-memory.dmp

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

MD5 1c7a79d546d58371e470f39bbeb6ee2a
SHA1 cb7a7fadf89eb4500680a26aa95ce05d0434cb32
SHA256 d1061aaea95973c0be8c3c535a0a1328280cf94a1da51ae3ea8efda4bd29b6f5
SHA512 e7975880d969b32b23ed5d02de76467a5d39e8e476c6842c81f850b868e1e32d92189f12ebdfbf45531a04bdcf4046a1bd8eba463e4a4dc87a8913e22ed4b3a5

memory/1520-13-0x0000000000950000-0x0000000000975000-memory.dmp

memory/4944-18-0x0000000000F60000-0x0000000000F85000-memory.dmp

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

MD5 b7369bcb1bcb9e75f0fb5a3c07a3cafe
SHA1 1e362cb74f1dc8e01e5824f6c251edc854323cde
SHA256 00e4c8725c8ca4cd9aa4d05085854898ae25ff43a56cd757b21c620c2a0a76af
SHA512 a065bb3d32b3a16704d549dad89e354cd8bfe5e40782c82817148e6a79788e897a37672bb0ff4a579f625f7bfa333ba7e2241f9cdbee1629be23b6bbf3eb34cd

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/1520-21-0x0000000000950000-0x0000000000975000-memory.dmp

memory/1520-23-0x0000000000950000-0x0000000000975000-memory.dmp

memory/1520-29-0x0000000000950000-0x0000000000975000-memory.dmp