Malware Analysis Report

2024-11-16 13:25

Sample ID 241010-c53w7avhje
Target 574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN
SHA256 574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53e
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

574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53e

Threat Level: Known bad

The file 574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Deletes itself

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-10 02:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-10 02:40

Reported

2024-10-10 02:42

Platform

win7-20240903-en

Max time kernel

120s

Max time network

81s

Command Line

"C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.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\bulat.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fiawl.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\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bulat.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\fiawl.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 664 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\bulat.exe
PID 664 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\bulat.exe
PID 664 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\bulat.exe
PID 664 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\bulat.exe
PID 664 wrote to memory of 2852 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 664 wrote to memory of 2852 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 664 wrote to memory of 2852 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 664 wrote to memory of 2852 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 1964 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\bulat.exe C:\Users\Admin\AppData\Local\Temp\fiawl.exe
PID 1964 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\bulat.exe C:\Users\Admin\AppData\Local\Temp\fiawl.exe
PID 1964 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\bulat.exe C:\Users\Admin\AppData\Local\Temp\fiawl.exe
PID 1964 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\bulat.exe C:\Users\Admin\AppData\Local\Temp\fiawl.exe

Processes

C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe

"C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

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

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

Network

Country Destination Domain Proto
KR 218.54.31.226:11300 tcp
KR 1.234.83.146:11170 tcp
KR 218.54.31.166:11300 tcp
JP 133.242.129.155:11300 tcp

Files

memory/664-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/664-0-0x0000000000830000-0x00000000008B1000-memory.dmp

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

MD5 4f5a6f69217e64fc65a311ffa085e3c6
SHA1 3eb67f1f993a70a710288d375793774cfe6e4212
SHA256 381ad861b265c6229a199135b852db0b00855bbad758360fb47840a32b827a90
SHA512 10cdda333be75c3bfbaa829072fd62b530433a2356a452fa94a767731c8f700acc463cf8c128b7a8b4875356fc354b73e697a58c1d8dc1c3f2442dc901ff4036

memory/1964-12-0x0000000000020000-0x0000000000021000-memory.dmp

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

MD5 2ac8bad7a05f3bdc1723eef5800eb79c
SHA1 a044dd8d21f925f722d8928ab090ed0700440102
SHA256 4e21be48d3d6bf7a95c749ba0d9f9fddef739edcb6445032282dffe033169d28
SHA512 480e592af44a045b8f0ef68f5b71404bc6ed09c66c9443821dc562435386e8ab886ce2c75ae82a07ed31a35481c5cb22f837253a9ff518144198858334c3dace

memory/1964-11-0x0000000000330000-0x00000000003B1000-memory.dmp

memory/664-9-0x00000000024A0000-0x0000000002521000-memory.dmp

memory/664-21-0x0000000000830000-0x00000000008B1000-memory.dmp

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

MD5 09ec4361993f035c2aba94def172b5c3
SHA1 2c5408dc056cf3dd04ce2b9e242646e51c5843f9
SHA256 ecf49b338e9cebaa960fa525de51e96274ccd18d5bb7f0a9fa3c20d156234a58
SHA512 b4ea318d9df8391a5d3a4d09c4a64a64f7092c662ea6a8034e0cdab0ac98ca76d093a62ffd6cb800a64fc2e9e753a951697ef325791a23b26e3d29afc6555d3f

memory/1964-24-0x0000000000330000-0x00000000003B1000-memory.dmp

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

MD5 e18dba26c029029ea84ab99f3e3773b7
SHA1 dd6f964e1381a6ad11062275c4f3e361efcda958
SHA256 0f36f0758f2aac5fc1b88fc0f33778db41d02e1a232b1171654d2878bd259f9b
SHA512 c44cf60af54cac034d7752e27c0d7f9130d82a63190139d414edd9ef5c6a622edaf210fdb6ae6817284c4a05c357ff0a056e97176e00ee251d8a2b4aeedc86bb

memory/2696-43-0x00000000011F0000-0x0000000001289000-memory.dmp

memory/2696-42-0x00000000011F0000-0x0000000001289000-memory.dmp

memory/1964-41-0x0000000000330000-0x00000000003B1000-memory.dmp

memory/1964-39-0x0000000003920000-0x00000000039B9000-memory.dmp

memory/2696-47-0x00000000011F0000-0x0000000001289000-memory.dmp

memory/2696-48-0x00000000011F0000-0x0000000001289000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-10 02:40

Reported

2024-10-10 02:42

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\xebuj.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\xebuj.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\opbio.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\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\xebuj.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\opbio.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1144 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\xebuj.exe
PID 1144 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\xebuj.exe
PID 1144 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Users\Admin\AppData\Local\Temp\xebuj.exe
PID 1144 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 1144 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 1144 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe C:\Windows\SysWOW64\cmd.exe
PID 2708 wrote to memory of 3456 N/A C:\Users\Admin\AppData\Local\Temp\xebuj.exe C:\Users\Admin\AppData\Local\Temp\opbio.exe
PID 2708 wrote to memory of 3456 N/A C:\Users\Admin\AppData\Local\Temp\xebuj.exe C:\Users\Admin\AppData\Local\Temp\opbio.exe
PID 2708 wrote to memory of 3456 N/A C:\Users\Admin\AppData\Local\Temp\xebuj.exe C:\Users\Admin\AppData\Local\Temp\opbio.exe

Processes

C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe

"C:\Users\Admin\AppData\Local\Temp\574bca65b0b385c9649f0d5cc3e0f58b9e912fbe60beaec3285f356dae7cc53eN.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_uinsey.bat" "

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

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

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 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
KR 218.54.31.226:11300 tcp
KR 1.234.83.146:11170 tcp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
KR 218.54.31.166:11300 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
JP 133.242.129.155:11300 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1144-0-0x0000000000760000-0x00000000007E1000-memory.dmp

memory/1144-1-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

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

MD5 c4508086819fc6218b2afeda806cb5f9
SHA1 95c26bb15ca6db626bc6be3a77ded2eac6417640
SHA256 8ffd34daeb0555e5052d1e48eb8a9f9108e77e7030ae18f82de1d38d4bdf8565
SHA512 0947c35615e75e09fc74f96a85187b255f10b7359baab75141b5b7e95eb77608de0c982c2716a7ae06db12266cf185948c0cc8a061d07ad3a70d006b0ffa55db

memory/2708-14-0x0000000000460000-0x0000000000461000-memory.dmp

memory/2708-13-0x00000000004D0000-0x0000000000551000-memory.dmp

memory/1144-17-0x0000000000760000-0x00000000007E1000-memory.dmp

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

MD5 2ac8bad7a05f3bdc1723eef5800eb79c
SHA1 a044dd8d21f925f722d8928ab090ed0700440102
SHA256 4e21be48d3d6bf7a95c749ba0d9f9fddef739edcb6445032282dffe033169d28
SHA512 480e592af44a045b8f0ef68f5b71404bc6ed09c66c9443821dc562435386e8ab886ce2c75ae82a07ed31a35481c5cb22f837253a9ff518144198858334c3dace

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

MD5 feb3a5c4d484c079efe42353a87bf640
SHA1 83e7bf9790c6537817953d337d5bbb59c317c119
SHA256 7fde0709ef871feca6f64f664c0af19ebf120332e317babd4eb9df693e7ddd4f
SHA512 13e2015da4ec21d02a143589a9ad0625f2e583a02492bbe48014e1f8070862f2de4730f22d780648dc106ed7151f43cfd4050dbaa97824017b7cf5147806897f

memory/2708-20-0x00000000004D0000-0x0000000000551000-memory.dmp

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

MD5 eaf6caa2de0ee4a6a31f6e62df30d150
SHA1 9d6d5c725a731e1806b8485efa934a811eb9bdec
SHA256 e8980b7c07847e9daccd40704c68ac0a1dc85758c60f672824edff2e439b083d
SHA512 acf41927f81f7def407739b8a8bbf1852351e26f77fe3ed503402d87dfe68959fa85fd235906e8b7914865eff67d842a690cfd3a719adc92eee76fc5b3981f77

memory/3456-36-0x0000000000EA0000-0x0000000000F39000-memory.dmp

memory/2708-43-0x00000000004D0000-0x0000000000551000-memory.dmp

memory/3456-42-0x0000000000560000-0x0000000000562000-memory.dmp

memory/3456-38-0x0000000000EA0000-0x0000000000F39000-memory.dmp

memory/3456-45-0x0000000000EA0000-0x0000000000F39000-memory.dmp

memory/3456-46-0x0000000000EA0000-0x0000000000F39000-memory.dmp