Malware Analysis Report

2024-11-16 13:25

Sample ID 241015-xbdqesvckk
Target 0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N
SHA256 0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6
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

0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6

Threat Level: Known bad

The file 0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N 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

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 18:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 18:40

Reported

2024-10-15 18:42

Platform

win7-20240903-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.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\fuiba.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\avnur.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\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe N/A
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\fuiba.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\avnur.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1736 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\fuiba.exe
PID 1736 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\fuiba.exe
PID 1736 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\fuiba.exe
PID 1736 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\fuiba.exe
PID 1736 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 1736 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 1736 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 1736 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 2464 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\fuiba.exe C:\Users\Admin\AppData\Local\Temp\avnur.exe
PID 2464 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\fuiba.exe C:\Users\Admin\AppData\Local\Temp\avnur.exe
PID 2464 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\fuiba.exe C:\Users\Admin\AppData\Local\Temp\avnur.exe
PID 2464 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\fuiba.exe C:\Users\Admin\AppData\Local\Temp\avnur.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe

"C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

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

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

Network

Country Destination Domain Proto
KR 218.54.31.226:11300 tcp
KR 1.234.83.146:11170 tcp
KR 218.54.31.166:11300 tcp
JP 133.242.129.155:11300 tcp

Files

memory/1736-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1736-0-0x0000000000FF0000-0x0000000001071000-memory.dmp

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

MD5 d42313d1019ac085488b3b955282a39c
SHA1 4bd5572a524e10e7b5c66787d458ac5c961c653a
SHA256 4dc6a5894807c74826f3b526c259db01da4f6f709e9ec7a54519b2d047bc4ad1
SHA512 9c0491e9b58b4d6767293d67ceba31d31a1885061d4683a8b7d06f32877bbeb60b026108107fb93a0572de33f20b4856fcdbc0cce3edc3bf9fb782315b889887

memory/2464-18-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2464-17-0x0000000001160000-0x00000000011E1000-memory.dmp

memory/1736-16-0x0000000002580000-0x0000000002601000-memory.dmp

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

MD5 53cd30d073131f0efcedbde93c7be2ac
SHA1 c0eceae61c088e22ad9f800efb03c88ec7258268
SHA256 94c12646403dc4928a6bfb36c8c77c8da93d01ff8b9a1073724100ed4e86eb1d
SHA512 bcca120fc54b2cc483e45464ffe27adb3e8ed06c0b1fb4216517b2428fee9148b2fdff90efba43c97e7e4e80cf303a83669fead258cf4e066841081d551d6016

memory/1736-21-0x0000000000FF0000-0x0000000001071000-memory.dmp

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

MD5 bbe7b4c922c9c3b02ac7db5bb0c95003
SHA1 c84cd7204cb70a338839efd90de5b66e95119733
SHA256 02a0f0a51fdc6295327f3797ed61e1e6260c2a27d2d214be8275ec66947b4136
SHA512 7ac22b86bb650aa1cf7eecaaaa040271fe1f935d968bb79de7bbedd365c480690b8d7dbd515c50e51c7bfa51969526f5e4bec769be12909304473289a20e3def

memory/2464-24-0x0000000001160000-0x00000000011E1000-memory.dmp

memory/2464-25-0x0000000000020000-0x0000000000021000-memory.dmp

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

MD5 8468707ae632cd485b8a881ab4d5aba3
SHA1 4da5127fe955a8e2b215a4893a3de2acfc56f4ae
SHA256 5e9adbf46ff5688af6b584831800ace9d44aeaa5aecde66475dbd6a50846baaf
SHA512 e2885db75cefed90c856c4117e4d799eefcf4848778f614fe6bea1c76b923ed6bd5924f95f786cf6196bc2332c994c7c6099eadddec3349dfb5336a968dcc5c5

memory/2464-38-0x0000000001040000-0x00000000010D9000-memory.dmp

memory/2464-42-0x0000000001160000-0x00000000011E1000-memory.dmp

memory/484-44-0x0000000000B20000-0x0000000000BB9000-memory.dmp

memory/484-43-0x0000000000B20000-0x0000000000BB9000-memory.dmp

memory/484-48-0x0000000000B20000-0x0000000000BB9000-memory.dmp

memory/484-49-0x0000000000B20000-0x0000000000BB9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 18:40

Reported

2024-10-15 18:42

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\yrnut.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\yrnut.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\japuz.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\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\yrnut.exe N/A
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\japuz.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4784 wrote to memory of 3132 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\yrnut.exe
PID 4784 wrote to memory of 3132 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\yrnut.exe
PID 4784 wrote to memory of 3132 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Users\Admin\AppData\Local\Temp\yrnut.exe
PID 4784 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 4784 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 4784 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe C:\Windows\SysWOW64\cmd.exe
PID 3132 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\yrnut.exe C:\Users\Admin\AppData\Local\Temp\japuz.exe
PID 3132 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\yrnut.exe C:\Users\Admin\AppData\Local\Temp\japuz.exe
PID 3132 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\yrnut.exe C:\Users\Admin\AppData\Local\Temp\japuz.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe

"C:\Users\Admin\AppData\Local\Temp\0741c87d55b6c503486006d19bedccbbabc9c6162ed763f46ddeb310a30431b6N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_uinsey.bat" "

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
KR 218.54.31.226:11300 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
KR 1.234.83.146:11170 tcp
US 8.8.8.8:53 197.87.175.4.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 218.54.31.166:11300 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
JP 133.242.129.155:11300 tcp
US 8.8.8.8:53 23.236.111.52.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp

Files

memory/4784-0-0x0000000000D60000-0x0000000000DE1000-memory.dmp

memory/4784-1-0x0000000000BC0000-0x0000000000BC1000-memory.dmp

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

MD5 cda8b06e0de869f6ffa8fea79b311bca
SHA1 9f788a52a1b87c736fe8465873c837b90de2a154
SHA256 555273b3b63a4bbc4a22ded7c8bb1072b2127a9857d2b0fddbabf39862ca5fd1
SHA512 96c9508d879f4d465bd60c50fff6ddb143f3e526f3e3591d8daace16dbbbf6269cf88969b7a8079b69d19b8a94937fc10b75305550c24f0f267525cf009d38e4

memory/3132-14-0x0000000000D80000-0x0000000000D81000-memory.dmp

memory/3132-13-0x0000000000AA0000-0x0000000000B21000-memory.dmp

memory/4784-17-0x0000000000D60000-0x0000000000DE1000-memory.dmp

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

MD5 53cd30d073131f0efcedbde93c7be2ac
SHA1 c0eceae61c088e22ad9f800efb03c88ec7258268
SHA256 94c12646403dc4928a6bfb36c8c77c8da93d01ff8b9a1073724100ed4e86eb1d
SHA512 bcca120fc54b2cc483e45464ffe27adb3e8ed06c0b1fb4216517b2428fee9148b2fdff90efba43c97e7e4e80cf303a83669fead258cf4e066841081d551d6016

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

MD5 1c87837223c7937ccd2bf9c1dc344e5e
SHA1 9258f77da2247118df7be4949b223b69b7c1ccba
SHA256 903326784c09367e0a565c5cb3eaa81695d3db6d4ebd5bc552689b789c3281c2
SHA512 37c9de6e4465f084c60e46ed116924e4092e411164da709963a7752b7c0de2bbfb0011dad3bc90777f8c6aabc94a2d9130f78c7ba60363c605ac60b2f1255a23

memory/3132-20-0x0000000000AA0000-0x0000000000B21000-memory.dmp

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

MD5 50acb6504e6dfc26c853b8dfa4630911
SHA1 0144a63e33d0debba5a060ad57e5d4c9a0b1faac
SHA256 fc70bf4c167b384b025720f8502c1c81daae3b1befce038ef94322e52544b6e8
SHA512 f2b0117e0d4943b97c52548ad511f9415148d6fb81c30c197830fe1eaf5679114de4c7c0348b8f43789fdd50c13278644718a2a11bf82a8a88339ac850664212

memory/4788-40-0x00000000010F0000-0x00000000010F2000-memory.dmp

memory/3132-38-0x0000000000AA0000-0x0000000000B21000-memory.dmp

memory/4788-37-0x00000000008B0000-0x0000000000949000-memory.dmp

memory/4788-41-0x00000000008B0000-0x0000000000949000-memory.dmp

memory/4788-46-0x00000000010F0000-0x00000000010F2000-memory.dmp

memory/4788-45-0x00000000008B0000-0x0000000000949000-memory.dmp

memory/4788-47-0x00000000008B0000-0x0000000000949000-memory.dmp