Malware Analysis Report

2024-11-16 13:25

Sample ID 241012-llf3ratfrd
Target def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N
SHA256 def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868
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

def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868

Threat Level: Known bad

The file def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Deletes itself

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-12 09:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-12 09:37

Reported

2024-10-12 09:39

Platform

win7-20240903-en

Max time kernel

119s

Max time network

77s

Command Line

"C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.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\tujoo.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ojhig.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\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\tujoo.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\ojhig.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2848 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\tujoo.exe
PID 2848 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\tujoo.exe
PID 2848 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\tujoo.exe
PID 2848 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\tujoo.exe
PID 2848 wrote to memory of 572 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2848 wrote to memory of 572 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2848 wrote to memory of 572 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2848 wrote to memory of 572 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2356 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\tujoo.exe C:\Users\Admin\AppData\Local\Temp\ojhig.exe
PID 2356 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\tujoo.exe C:\Users\Admin\AppData\Local\Temp\ojhig.exe
PID 2356 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\tujoo.exe C:\Users\Admin\AppData\Local\Temp\ojhig.exe
PID 2356 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\tujoo.exe C:\Users\Admin\AppData\Local\Temp\ojhig.exe

Processes

C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe

"C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

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

"C:\Users\Admin\AppData\Local\Temp\ojhig.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/2848-0-0x00000000013C0000-0x0000000001441000-memory.dmp

memory/2848-1-0x0000000000020000-0x0000000000021000-memory.dmp

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

MD5 2607cc361f66e34d48cf49578b3f33f8
SHA1 de388472d33ea840341443e837e0de37c73eaa3c
SHA256 c29bc38061e2859d833ab213054468b1b316c06ca22ecbb63902989bdfbc9f29
SHA512 45c2b76a301258b12b607d0112bae460f2d4a846cd657343b68ae9cbb6479a7391059cc62fac713d90d568696a597943a673c34ae63e5c608d3a1e1838bd51f6

memory/2848-8-0x0000000001030000-0x00000000010B1000-memory.dmp

memory/2356-11-0x0000000000020000-0x0000000000021000-memory.dmp

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

MD5 af07bbbf99824bb85d4b9b850a1aa6a4
SHA1 b8ec12968efb0a2df10777d10ed34e1d28789bbe
SHA256 e56caf3c576e3fa94afb3be10f6fc9ee44bc135e1ca1889bb1605da68e5aaf56
SHA512 0d593fc865d89460b465d24d02ecf54772bb1503bc27b53f76cc40d805c10c44f61ff8e7d0000ec4ffdd52be3fd8f3c52d4177bb08f10792751269d6601153b9

memory/2848-20-0x00000000013C0000-0x0000000001441000-memory.dmp

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

MD5 266ccf4698558df683501cfcf58c1238
SHA1 a5477c9ef8f480c6532b2e8778207c098ecb363b
SHA256 5b289f9df4f99e29c2bd0a5dfb6db859c7d0f2be1dfaef2c268addbd40c84a3c
SHA512 216010137a6ebde462bd06beb35018a25930f1c2a9f85593515d6edecb2688760d31a8ebe6b60eb9b56bedd104bd835029010a2e564a716a40c77e606dcf2c3b

memory/2356-23-0x0000000000E50000-0x0000000000ED1000-memory.dmp

memory/2356-24-0x0000000000020000-0x0000000000021000-memory.dmp

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

MD5 2fc58de5820c71ed97df786fbf7905a2
SHA1 9829ab82542be273ec089f3c8cc46e32a7ffbeaa
SHA256 c2e51b307ee947842e0ff121acb2f0845932838931b9a9b3998972bc1f71f47f
SHA512 f9a2bdf8d644217bcf0884272a6a1c5fdbe9adfa64a9d34ae05dcc86b4644a1fa5a941f3865b9370eb529930dd99b323af2152902161551214fd388da17bebfe

memory/2300-44-0x0000000000CC0000-0x0000000000D59000-memory.dmp

memory/2300-41-0x0000000000CC0000-0x0000000000D59000-memory.dmp

memory/2356-39-0x0000000000E50000-0x0000000000ED1000-memory.dmp

memory/2300-46-0x0000000000CC0000-0x0000000000D59000-memory.dmp

memory/2300-47-0x0000000000CC0000-0x0000000000D59000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-12 09:37

Reported

2024-10-12 09:39

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.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\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dusep.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dusep.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\depod.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\depod.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\dusep.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2176 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\dusep.exe
PID 2176 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\dusep.exe
PID 2176 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Users\Admin\AppData\Local\Temp\dusep.exe
PID 2176 wrote to memory of 3928 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2176 wrote to memory of 3928 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2176 wrote to memory of 3928 N/A C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe C:\Windows\SysWOW64\cmd.exe
PID 2384 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\dusep.exe C:\Users\Admin\AppData\Local\Temp\depod.exe
PID 2384 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\dusep.exe C:\Users\Admin\AppData\Local\Temp\depod.exe
PID 2384 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\dusep.exe C:\Users\Admin\AppData\Local\Temp\depod.exe

Processes

C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe

"C:\Users\Admin\AppData\Local\Temp\def25c03fa68d007f62b5b8ca42175194dafa4ad54b73248b382578679ce1868N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\dusep.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\depod.exe

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

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 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
KR 218.54.31.226:11300 tcp
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 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
KR 218.54.31.166:11300 tcp
JP 133.242.129.155:11300 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/2176-0-0x0000000000070000-0x00000000000F1000-memory.dmp

memory/2176-1-0x0000000000B90000-0x0000000000B91000-memory.dmp

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

MD5 5dcd9c59ad22714476686080c1607501
SHA1 bb12f95b994f556e9a71442b771d54de7a5cb710
SHA256 bfa97982a22da4fc45729fa83af5f60a2b1f046ae1aaba19d9085e6c8c99162e
SHA512 cddb02b2893a60c1114c00a044859742a05708d32accbee47954f5475d52f20b17c5167e9397fff74d31727ad70cd61d0dd5c7a3f65056ad70a60923bbd150a3

memory/2384-13-0x0000000000D70000-0x0000000000D71000-memory.dmp

memory/2384-11-0x0000000000CD0000-0x0000000000D51000-memory.dmp

memory/2176-17-0x0000000000070000-0x00000000000F1000-memory.dmp

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

MD5 af07bbbf99824bb85d4b9b850a1aa6a4
SHA1 b8ec12968efb0a2df10777d10ed34e1d28789bbe
SHA256 e56caf3c576e3fa94afb3be10f6fc9ee44bc135e1ca1889bb1605da68e5aaf56
SHA512 0d593fc865d89460b465d24d02ecf54772bb1503bc27b53f76cc40d805c10c44f61ff8e7d0000ec4ffdd52be3fd8f3c52d4177bb08f10792751269d6601153b9

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

MD5 7a76b9e02f5774698efefad8bd20d409
SHA1 e4be6abddf9e497ce26848d1929de108b99d8ea9
SHA256 7395ee3e79227f243c7c095698df753ed8eb6bc61ce16406e32888f8e1881ad1
SHA512 dcbe2ec545b94034727a6204f4a705de0c414404ce6a2acdaab50ff48cd670b8dfaf6a0cc08bfdb5856c03ae5f6aec716d4a97c4f61852ed11d9f410ee2ba007

memory/2384-20-0x0000000000CD0000-0x0000000000D51000-memory.dmp

memory/2384-21-0x0000000000D70000-0x0000000000D71000-memory.dmp

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

MD5 f9d4892d30d0d9467234db066b482969
SHA1 4b6c9d6ab4768ec184c5c7bcf98bf4d69fcc6193
SHA256 233492ff283cb4120384a695540b60b80b340a963d2cb14de804ef2dd93b3bd6
SHA512 020458e46ecbcc313e3861553a0b031e6d4308e2aadc113e46935372566c8901b1dea6a5632e8a4336f06d42617f700eeb268be4781a461671fccab6aeeea78e

memory/5084-38-0x0000000000FD0000-0x0000000001069000-memory.dmp

memory/5084-39-0x0000000000360000-0x0000000000362000-memory.dmp

memory/2384-41-0x0000000000CD0000-0x0000000000D51000-memory.dmp

memory/5084-42-0x0000000000FD0000-0x0000000001069000-memory.dmp

memory/5084-47-0x0000000000360000-0x0000000000362000-memory.dmp

memory/5084-46-0x0000000000FD0000-0x0000000001069000-memory.dmp

memory/5084-48-0x0000000000FD0000-0x0000000001069000-memory.dmp