Malware Analysis Report

2024-11-16 13:26

Sample ID 241015-lh4dwa1cnm
Target bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN
SHA256 bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5e
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

bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5e

Threat Level: Known bad

The file bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Checks computer location settings

Deletes itself

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 09:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 09:32

Reported

2024-10-15 09:34

Platform

win7-20240903-en

Max time kernel

68s

Max time network

56s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.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\poldge.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\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\poldge.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\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe

"C:\Users\Admin\AppData\Local\Temp\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
KR 218.54.28.240:11150 tcp

Files

memory/2384-0-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 a8e28d07641dc9d754404f90fb22f0ac
SHA1 78aeab8c40844d064555eb869b71064abbca5f0a
SHA256 3fdc1c67c67aa4a6f7d55a857cc35381eebc4911f48d7733e1fe2263ea768686
SHA512 6f36587495df177b12846db9522576a5b583a229971e307fc68e666cfdcfcdcd07e2a014c3788425be13f8f4915084379be72ba071741a6a2741364def506932

memory/2384-19-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2940-16-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 b62a0b6ac1a6284819a32c45fc0366b1
SHA1 045817dfb9b0115b9eb9a6dfa6fc27d18ec3453d
SHA256 d198435d5d81e9796dcf8c5d7a62c420329988e37f50c4a3724e80cac5b31974
SHA512 adaa92202962edbf00fda1480354d15f7746bf3a7c664ef7ba943d5965d44fb9df6bccf2f5ecbcc5bbd8ed76899da87bab3f48c63f2413feb56eef9ac512eed1

memory/2384-8-0x0000000002290000-0x00000000022CB000-memory.dmp

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

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/2940-22-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2940-29-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 09:32

Reported

2024-10-15 09:35

Platform

win10v2004-20241007-en

Max time kernel

114s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\poldge.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\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\poldge.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\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe

"C:\Users\Admin\AppData\Local\Temp\bbe945239f33d51f2cf656f182dfaf3ce7e21f64e02fefe81b61196b6d837c5eN.exe"

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

"C:\Users\Admin\AppData\Local\Temp\poldge.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
KR 218.54.28.240:11150 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.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
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/5000-0-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 8cb3cad109b7ba31285d9fc26340be23
SHA1 1d13535ed4bdf015ea2d5fed4d0fa4cac15fed18
SHA256 5b443b354e451dc3c59cef6c16605c7234baf6e2a1a8dcb1ad849a5f28923701
SHA512 fafe7448ee942329a0a156667331c5920850e257fc7279b6691665e87109d131944e7f1b0df35a2fdfad9268eae326868f758a93a936d5c21b9d0f429e7468a6

memory/2368-12-0x0000000000400000-0x000000000043B000-memory.dmp

memory/5000-15-0x0000000000400000-0x000000000043B000-memory.dmp

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

MD5 b62a0b6ac1a6284819a32c45fc0366b1
SHA1 045817dfb9b0115b9eb9a6dfa6fc27d18ec3453d
SHA256 d198435d5d81e9796dcf8c5d7a62c420329988e37f50c4a3724e80cac5b31974
SHA512 adaa92202962edbf00fda1480354d15f7746bf3a7c664ef7ba943d5965d44fb9df6bccf2f5ecbcc5bbd8ed76899da87bab3f48c63f2413feb56eef9ac512eed1

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

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/2368-18-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2368-24-0x0000000000400000-0x000000000043B000-memory.dmp