Malware Analysis Report

2024-11-16 13:26

Sample ID 241013-nc6m6atcpc
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

Deletes itself

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-13 11:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-13 11:16

Reported

2024-10-13 11:18

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

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/2480-0-0x0000000001160000-0x0000000001192000-memory.dmp

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

MD5 7b5ee2ee3b8598bae2c206e420c12965
SHA1 a581439c03b04b1ceb873f78f3a45cda3fc77f44
SHA256 2297c18d69b894889751b3fe622cb15ac3530d0297a9f5ae30dd095074a79dc1
SHA512 61ef665517216dccf272c0640300006c473d511ed8817eed2e46ad69e1da7970ba0bc7b00d5bd7cce14ed4f607df317297b6c9b785db489568692a1cd3a10691

memory/1148-10-0x0000000001250000-0x0000000001282000-memory.dmp

memory/2480-7-0x0000000000AD0000-0x0000000000B02000-memory.dmp

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

MD5 676482554c49f761e4f44639b6e96633
SHA1 4a2ec30252639ab31b09694f49df2b01def0a56c
SHA256 be4fdbd3339f0c3f757adb6ffacee9d92a378abbfb9251a1d06ec0dbf3aa200f
SHA512 034bed4cc8767d8100cd5c32d63f59b4c7dd4020c58d75600e4e0dd0fd8d4267a6c29e17a6c55357473784c499e92448bf4f0d40a80c7929f62b6e26b412b4e4

memory/2480-19-0x0000000001160000-0x0000000001192000-memory.dmp

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

MD5 26625b4ca7658f7ba4dc7d982782323c
SHA1 574aa314998c39e683675ccf457b0305341a4aaf
SHA256 c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283
SHA512 5a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d

memory/1148-22-0x0000000001250000-0x0000000001282000-memory.dmp

memory/1148-24-0x0000000001250000-0x0000000001282000-memory.dmp

memory/1148-30-0x0000000001250000-0x0000000001282000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-13 11:16

Reported

2024-10-13 11:18

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

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-1-5-21-3756129449-3121373848-4276368241-1000\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:\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

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 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 99.209.201.84.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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/1888-0-0x0000000000D20000-0x0000000000D52000-memory.dmp

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

MD5 7c6144f4c7e5f14a63d2f22e8507f89e
SHA1 051b89af99403d21c6d95346a319d7e27008bf25
SHA256 06b0d38f8c9014ef5a353ba0d8e06dcfc2ced9e6cb9a590d73ecb5f7df6f8986
SHA512 0fc24ef326947d3573b4521d35815ad365c3c22a8d6cff26d25a9f3248405777367063e3c4a9c7fd670a12f29b4c0ffc22cb7e44f972c1d9645df85c42dda58d

memory/2808-15-0x0000000000CF0000-0x0000000000D22000-memory.dmp

memory/1888-18-0x0000000000D20000-0x0000000000D52000-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/2808-21-0x0000000000CF0000-0x0000000000D22000-memory.dmp

memory/2808-23-0x0000000000CF0000-0x0000000000D22000-memory.dmp

memory/2808-30-0x0000000000CF0000-0x0000000000D22000-memory.dmp