Malware Analysis Report

2024-11-16 13:24

Sample ID 241008-wmcrtssfqd
Target 2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N
SHA256 2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3
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

2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3

Threat Level: Known bad

The file 2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N was found to be: Known bad.

Malicious Activity Summary

upx urelas discovery trojan

Urelas family

Urelas

Executes dropped EXE

Checks computer location settings

Deletes itself

Loads dropped DLL

UPX packed file

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-08 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

2024-10-08 18:01

Reported

2024-10-08 18:04

Platform

win7-20240708-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.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

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\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.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\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.exe

"C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.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/1476-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 47cd2dfdeb21e355ef8fb3d930df63e1
SHA1 bfb71c1da4721043e80aa52c86bad8314dbd0fb9
SHA256 8f1a15d0815bf0bf5164e440f3edfa9625b9b087cdc89a7b508c90df571602c6
SHA512 3736946b0d54ae4006fc4c6ab47edc5f503f15e8adc57c3ac637b4cf7c966cf3627b5db284d259af2722828ae94c1ac9621991ae74a47c5916d49ef624449ea9

memory/1476-7-0x0000000002450000-0x0000000002481000-memory.dmp

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

MD5 28e0ced05aaa9ba401db8ed0c633027a
SHA1 2ec234104085a09a0f6cad267cda02a665410d2b
SHA256 2fc75ca63ab301411650ae6a7735d74e90ffc02c2e5f5391fec52284739abf49
SHA512 dfc0e0c6ec8d846e11b193eb345b32e9b44544ab2669203681f11ba2fd7b6b68d14035e493064768c3e47c7833303d66ac054fd0c63926bf7eb541c48caf3866

memory/2364-10-0x0000000000400000-0x0000000000431000-memory.dmp

memory/1476-19-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/2364-22-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2364-24-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2364-31-0x0000000000400000-0x0000000000431000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-08 18:01

Reported

2024-10-08 18:04

Platform

win10v2004-20241007-en

Max time kernel

92s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.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

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\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.exe

"C:\Users\Admin\AppData\Local\Temp\2bd41b334719143294e91c77d1bcdfaebebcac9264e9b2ba9e6df1b9d306d7e3N.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 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
KR 112.175.88.209:11120 tcp
KR 112.175.88.208:11150 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 98.117.19.2.in-addr.arpa udp
KR 112.175.88.209:11170 tcp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
KR 112.175.88.207:11150 tcp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp

Files

memory/1456-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 f05d07a261add86a73400f420b20cd1a
SHA1 c287f5ad8e7bc2c8f4f5386823fb358383afb23b
SHA256 3a1743388c9bb637fe4644a5325fd7aaea21a345342b8932b231fc99182d68eb
SHA512 7ed61d8d06c3f8c55e297e3c871a79008631c32f0447d71441306ec75438a512fd4fb73eeb2d1877351276cf25f48e29303adf7127cf5732ae6ee747824b7b8e

memory/1456-16-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 28e0ced05aaa9ba401db8ed0c633027a
SHA1 2ec234104085a09a0f6cad267cda02a665410d2b
SHA256 2fc75ca63ab301411650ae6a7735d74e90ffc02c2e5f5391fec52284739abf49
SHA512 dfc0e0c6ec8d846e11b193eb345b32e9b44544ab2669203681f11ba2fd7b6b68d14035e493064768c3e47c7833303d66ac054fd0c63926bf7eb541c48caf3866

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/3612-19-0x0000000000400000-0x0000000000431000-memory.dmp

memory/3612-21-0x0000000000400000-0x0000000000431000-memory.dmp

memory/3612-28-0x0000000000400000-0x0000000000431000-memory.dmp