Malware Analysis Report

2024-11-16 13:28

Sample ID 240804-wmb6as1fnq
Target f65d8bf522dfa45bdcde26623f249ba0N.exe
SHA256 c56f8d3b2945eeeafb159b5d98e933c2a731a507df022c21f7f214770ce36416
Tags
upx 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

c56f8d3b2945eeeafb159b5d98e933c2a731a507df022c21f7f214770ce36416

Threat Level: Known bad

The file f65d8bf522dfa45bdcde26623f249ba0N.exe was found to be: Known bad.

Malicious Activity Summary

upx urelas discovery trojan

Urelas

Urelas family

UPX packed file

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Deletes itself

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-04 18:01

Signatures

Urelas family

urelas

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-04 18:01

Reported

2024-08-04 18:04

Platform

win7-20240705-en

Max time kernel

118s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.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\huter.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\f65d8bf522dfa45bdcde26623f249ba0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.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\f65d8bf522dfa45bdcde26623f249ba0N.exe

"C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
KR 112.175.88.209:11120 tcp
KR 112.175.88.208:11150 tcp
KR 112.175.88.209:11170 tcp
KR 112.175.88.207:11150 tcp

Files

memory/2272-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 4740ae91a5225b51d0371231ae3edefd
SHA1 b9b0c4588c50a84f264091eeeea14802a3fb01fc
SHA256 ddf61ff42b5a57b0f10e31c1128142f3551dcdccfdccc11cca62828f36e58e0c
SHA512 a3f1ee10e704d39a6e2498a983705d98eaea4da913943dcff378811f68d2d9eac8e3e81bcdabefddd0de5d1e722a11c5218525ce1299caba0a595ef68fb143a2

memory/2272-6-0x0000000002A00000-0x0000000002A31000-memory.dmp

memory/2800-10-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 f264cae5660baa5e9ef874fb670effaf
SHA1 003e89392c389ef7f83749c33736c27c3c38a3c7
SHA256 007dbc3e13817b2259f78069f9ba2dd72e39184a2efebbf56fba582c6b641772
SHA512 2fe07a58005080b08507c2d47cf43655b422687d97f128bf5c50643aaf9bec6e030bea9ab23fe75368d47ee6cee942a20f6484cc5e5755d7af9fd0ecfea0bca4

memory/2272-19-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/2800-22-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2800-24-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2800-30-0x0000000000400000-0x0000000000431000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-04 18:01

Reported

2024-08-04 18:03

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.exe N/A

Executes dropped EXE

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

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\f65d8bf522dfa45bdcde26623f249ba0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.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\f65d8bf522dfa45bdcde26623f249ba0N.exe

"C:\Users\Admin\AppData\Local\Temp\f65d8bf522dfa45bdcde26623f249ba0N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\huter.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
KR 112.175.88.209:11120 tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
KR 112.175.88.208:11150 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 0.205.248.87.in-addr.arpa udp
KR 112.175.88.209:11170 tcp
KR 112.175.88.207:11150 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1372-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 a6e81e2fe954076e769958bca321937c
SHA1 768baab32de67b676e81782901b989174f59c828
SHA256 e0b62f48f224009ecfc72e667b57ed989d8a93c0f487b2242478a1ec4241551b
SHA512 998655c20d0dbd0ac97cbfbd88d61766e0b19b770ebc1e429ed7f6c392d7025695dafc9ab8558e1e11bb3325d4f31b80e829ed04b4a954446c07ceb64d92a2c0

memory/744-15-0x0000000000400000-0x0000000000431000-memory.dmp

memory/1372-18-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 f264cae5660baa5e9ef874fb670effaf
SHA1 003e89392c389ef7f83749c33736c27c3c38a3c7
SHA256 007dbc3e13817b2259f78069f9ba2dd72e39184a2efebbf56fba582c6b641772
SHA512 2fe07a58005080b08507c2d47cf43655b422687d97f128bf5c50643aaf9bec6e030bea9ab23fe75368d47ee6cee942a20f6484cc5e5755d7af9fd0ecfea0bca4

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/744-21-0x0000000000400000-0x0000000000431000-memory.dmp

memory/744-23-0x0000000000400000-0x0000000000431000-memory.dmp

memory/744-29-0x0000000000400000-0x0000000000431000-memory.dmp