Malware Analysis Report

2024-11-16 13:25

Sample ID 241013-nbw3bsybkm
Target 92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N
SHA256 92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080
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

92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080

Threat Level: Known bad

The file 92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Checks computer location settings

Deletes itself

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-13 11:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-13 11:13

Reported

2024-10-13 11:16

Platform

win7-20241010-en

Max time kernel

90s

Max time network

91s

Command Line

"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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\biudfw.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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe

"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
KR 218.54.47.76:11170 tcp
KR 218.54.47.77:11150 tcp

Files

memory/2356-0-0x0000000000DE0000-0x0000000000E12000-memory.dmp

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

MD5 3f389dcbe2efc1317672b2ac03ee8203
SHA1 c1821c7169b9aff676260fc6787fd462e375a9d6
SHA256 a883f2b7c73a08f88f7b4a1758592df8526ada16b4b28bdbc06dd6da2dcf0379
SHA512 fda9ca733c5b455ed889ceed871290f61148d4e4c8481a4cb6e19dfb95714c34849e556b9866ce9e6a8c8c96a2f2d9c9f6f83b1f7114593823386246603049ce

memory/2356-9-0x00000000008E0000-0x0000000000912000-memory.dmp

memory/1284-10-0x00000000000C0000-0x00000000000F2000-memory.dmp

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

MD5 676482554c49f761e4f44639b6e96633
SHA1 4a2ec30252639ab31b09694f49df2b01def0a56c
SHA256 be4fdbd3339f0c3f757adb6ffacee9d92a378abbfb9251a1d06ec0dbf3aa200f
SHA512 034bed4cc8767d8100cd5c32d63f59b4c7dd4020c58d75600e4e0dd0fd8d4267a6c29e17a6c55357473784c499e92448bf4f0d40a80c7929f62b6e26b412b4e4

memory/2356-19-0x0000000000DE0000-0x0000000000E12000-memory.dmp

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

MD5 26625b4ca7658f7ba4dc7d982782323c
SHA1 574aa314998c39e683675ccf457b0305341a4aaf
SHA256 c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283
SHA512 5a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d

memory/1284-22-0x00000000000C0000-0x00000000000F2000-memory.dmp

memory/1284-24-0x00000000000C0000-0x00000000000F2000-memory.dmp

memory/1284-31-0x00000000000C0000-0x00000000000F2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-13 11:13

Reported

2024-10-13 11:15

Platform

win10v2004-20241007-en

Max time kernel

96s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\biudfw.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:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe

"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\biudfw.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 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3468-0-0x0000000000CE0000-0x0000000000D12000-memory.dmp

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

MD5 c454d11cd16427db01e5c9f338601de6
SHA1 4c7ed8985f3805cc8cc2c1eebec0d1c5a068131d
SHA256 116f48a90c9a11ede03c165312ea672913bd195d3cc900b012573dc446622698
SHA512 d6e979640b89efe891f8ea32ba82f4127a5a8609973936484eb2508f53c11a45b186bcd1c6a1480faa3d6c6cafc3add9d0b0ad19b63a584a0547edc62c461545

memory/936-13-0x0000000000620000-0x0000000000652000-memory.dmp

memory/3468-18-0x0000000000CE0000-0x0000000000D12000-memory.dmp

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

MD5 676482554c49f761e4f44639b6e96633
SHA1 4a2ec30252639ab31b09694f49df2b01def0a56c
SHA256 be4fdbd3339f0c3f757adb6ffacee9d92a378abbfb9251a1d06ec0dbf3aa200f
SHA512 034bed4cc8767d8100cd5c32d63f59b4c7dd4020c58d75600e4e0dd0fd8d4267a6c29e17a6c55357473784c499e92448bf4f0d40a80c7929f62b6e26b412b4e4

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

MD5 26625b4ca7658f7ba4dc7d982782323c
SHA1 574aa314998c39e683675ccf457b0305341a4aaf
SHA256 c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283
SHA512 5a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d

memory/936-21-0x0000000000620000-0x0000000000652000-memory.dmp

memory/936-23-0x0000000000620000-0x0000000000652000-memory.dmp

memory/936-30-0x0000000000620000-0x0000000000652000-memory.dmp