Malware Analysis Report

2024-11-16 13:25

Sample ID 241013-eprv4aserj
Target dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb
SHA256 dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb
Tags
upx 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

dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb

Threat Level: Known bad

The file dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb was found to be: Known bad.

Malicious Activity Summary

upx urelas discovery trojan

Urelas family

Urelas

Deletes itself

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-13 04:07

Signatures

Urelas family

urelas

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-13 04:07

Reported

2024-10-13 04:09

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.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\huter.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 336 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Users\Admin\AppData\Local\Temp\huter.exe
PID 2292 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Windows\SysWOW64\cmd.exe
PID 2292 wrote to memory of 2260 N/A C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe

"C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
KR 211.57.201.131:11120 tcp
KR 211.57.201.131:11170 tcp

Files

memory/2292-0-0x00000000000B0000-0x00000000000E1000-memory.dmp

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

MD5 55d8917181c503e477e70b39dc94348c
SHA1 4919c8d3202ef28db3830008f90d096745f3d13c
SHA256 0431e03b60210ae7bb8ee9214bc97b3992c5de4a685ae3e725c947f470890293
SHA512 74ccebdb3f33252e2c573f3698a360dbe2c019e0452460f7cb01d0a3a67297a26d8457e10dbf5f79f0867d62efe70355735ab7905b3f53c07c4262ff9f7fc13a

memory/2292-6-0x00000000004A0000-0x00000000004D1000-memory.dmp

memory/336-10-0x0000000000C80000-0x0000000000CB1000-memory.dmp

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

MD5 d9c0ee26da8874510070fc31216de2a2
SHA1 277e534411b942e513a8490cafb5c60f00fa39b5
SHA256 79f20d1ace4736925edbd44055fea1d449e475e252e66231edbb5e83cfc7036e
SHA512 38f23d9230f4324c4ac40a879abb3571677583bf1ef872d05a388fe34e8fbbaaa3f14c99c206df46d02a91cdbdbe2f94f8d8ff91e350624d6049e7e881ce7807

memory/2292-19-0x00000000000B0000-0x00000000000E1000-memory.dmp

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

MD5 55d2fdd1432483e3ba86ebeccfe130b6
SHA1 7280b14d708800fd15303b2caa8628a0fbd7aa08
SHA256 5cfd1668ec0e5f3b5f8d04e54091d6f173bede6e6f9bb418819fd550095139fb
SHA512 36fd81128552356672b52936699c5e6362268c8131857e778e02a6862600c4feb20d13063d5f838e0887cb5083c648d39fe07faffba18c26387760752f9dd1f3

memory/336-22-0x0000000000C80000-0x0000000000CB1000-memory.dmp

memory/336-24-0x0000000000C80000-0x0000000000CB1000-memory.dmp

memory/336-27-0x0000000000C80000-0x0000000000CB1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-13 04:07

Reported

2024-10-13 04:09

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe N/A

Executes dropped EXE

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

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.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\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe

"C:\Users\Admin\AppData\Local\Temp\dd971f966366e6185b67eaebeecedca3dc45c2e617db13ac934f7e91b6af00eb.exe"

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

"C:\Users\Admin\AppData\Local\Temp\huter.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 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
KR 211.57.201.131:11120 tcp
KR 211.57.201.131:11170 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2792-0-0x0000000000AB0000-0x0000000000AE1000-memory.dmp

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

MD5 0ea4c40ec0e7cb1bd27da9a194f22764
SHA1 4d539544d286e975e3104eddd8602d3505486290
SHA256 fdc425e13022c6dfc5b83a491bf21e7603c669a317e24a26bd7eedb655235a0a
SHA512 5f2984f32f8793ee5427a3b20e18bd22107d09830abf202c1a10be0996dac60fe0028d700df92887cd4d26fdf5c9ab8216a6c98b84f31d58592ac482d659cfa1

memory/4288-12-0x0000000000930000-0x0000000000961000-memory.dmp

memory/2792-17-0x0000000000AB0000-0x0000000000AE1000-memory.dmp

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

MD5 d9c0ee26da8874510070fc31216de2a2
SHA1 277e534411b942e513a8490cafb5c60f00fa39b5
SHA256 79f20d1ace4736925edbd44055fea1d449e475e252e66231edbb5e83cfc7036e
SHA512 38f23d9230f4324c4ac40a879abb3571677583bf1ef872d05a388fe34e8fbbaaa3f14c99c206df46d02a91cdbdbe2f94f8d8ff91e350624d6049e7e881ce7807

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

MD5 55d2fdd1432483e3ba86ebeccfe130b6
SHA1 7280b14d708800fd15303b2caa8628a0fbd7aa08
SHA256 5cfd1668ec0e5f3b5f8d04e54091d6f173bede6e6f9bb418819fd550095139fb
SHA512 36fd81128552356672b52936699c5e6362268c8131857e778e02a6862600c4feb20d13063d5f838e0887cb5083c648d39fe07faffba18c26387760752f9dd1f3

memory/4288-20-0x0000000000930000-0x0000000000961000-memory.dmp

memory/4288-22-0x0000000000930000-0x0000000000961000-memory.dmp

memory/4288-24-0x0000000000930000-0x0000000000961000-memory.dmp