Malware Analysis Report

2024-11-16 13:28

Sample ID 240806-3yy8javbqr
Target 2edb82168379b1a7228928a87236b140N.exe
SHA256 d7b0ce3f71458c33857a02fd7ad9c751810a40bd1173c642c37b5c9a1462bc78
Tags
urelas discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d7b0ce3f71458c33857a02fd7ad9c751810a40bd1173c642c37b5c9a1462bc78

Threat Level: Known bad

The file 2edb82168379b1a7228928a87236b140N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Deletes itself

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-06 23:56

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 23:56

Reported

2024-08-06 23:58

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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\2edb82168379b1a7228928a87236b140N.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\2edb82168379b1a7228928a87236b140N.exe

"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 157.123.68.40.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 218.54.47.76:11170 tcp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2372-0-0x0000000000410000-0x0000000000435000-memory.dmp

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

MD5 3378109fc9b84a9cef2b590c4c8e749d
SHA1 70fe1c9fa4c29407402db49e49b573ee43ec1335
SHA256 251b675083ee6d6287c0c9c252d791581f96c10115f8cadb90498cf89e228abc
SHA512 b028c519d4b81403a3444471a2f130f041c3d9961e65650648cfe940c28968b2c2ec10bbf465e37d7f46b708f51b6ccb509c1fb6723e34a78a8a69ceedc0de65

memory/1388-15-0x00000000000D0000-0x00000000000F5000-memory.dmp

memory/2372-17-0x0000000000410000-0x0000000000435000-memory.dmp

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

MD5 f56874ab5030601b0e8c6d35658230a9
SHA1 c3188bdbb9c98bfa8c7cf658dd79d98a6359eb4a
SHA256 841d5d4feb344ba5e2a9ab1fb9a01b9f11a4358a33fce12380c589cd593acdcd
SHA512 10fd8da9f18f8ed1ba46a02d48b9c4adfdac1abe151425252ab78d16bd78df184a85d56f878b727d737be97cfbad0d237ed37b62baeed0b0d1f65432dc066cfe

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/1388-20-0x00000000000D0000-0x00000000000F5000-memory.dmp

memory/1388-22-0x00000000000D0000-0x00000000000F5000-memory.dmp

memory/1388-28-0x00000000000D0000-0x00000000000F5000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-06 23:56

Reported

2024-08-06 23:58

Platform

win7-20240729-en

Max time kernel

89s

Max time network

77s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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\biudfw.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\2edb82168379b1a7228928a87236b140N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe

"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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/1520-0-0x0000000000230000-0x0000000000255000-memory.dmp

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

MD5 33d98522ada2aaf0f3eae418369f494c
SHA1 055dc8915178269e087eb0e06a8a20dd61c6a7ac
SHA256 e853a14d86fbc30175b50ee59d6b7f5362f2eeb507d50f560706f1381ee35353
SHA512 d34415012debdd4aab92040bd88a229dbacafa8ef52dfcc679db0c174ecc8e4c2ce189df8a4936d379b3fe11fb71395e068a17c19acd008971a165fc05d1e517

memory/1520-9-0x0000000000580000-0x00000000005A5000-memory.dmp

memory/2160-10-0x0000000000FE0000-0x0000000001005000-memory.dmp

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

MD5 f56874ab5030601b0e8c6d35658230a9
SHA1 c3188bdbb9c98bfa8c7cf658dd79d98a6359eb4a
SHA256 841d5d4feb344ba5e2a9ab1fb9a01b9f11a4358a33fce12380c589cd593acdcd
SHA512 10fd8da9f18f8ed1ba46a02d48b9c4adfdac1abe151425252ab78d16bd78df184a85d56f878b727d737be97cfbad0d237ed37b62baeed0b0d1f65432dc066cfe

memory/1520-19-0x0000000000230000-0x0000000000255000-memory.dmp

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

MD5 efd90b3ac908d5482af367de3a82184a
SHA1 de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA256 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA512 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02

memory/2160-22-0x0000000000FE0000-0x0000000001005000-memory.dmp

memory/2160-24-0x0000000000FE0000-0x0000000001005000-memory.dmp

memory/2160-31-0x0000000000FE0000-0x0000000001005000-memory.dmp