Malware Analysis Report

2024-11-16 13:25

Sample ID 241009-2eyl8awbjk
Target 68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N
SHA256 68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92
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

68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92

Threat Level: Known bad

The file 68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Deletes itself

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-09 22:30

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-09 22:30

Reported

2024-10-09 22:32

Platform

win7-20240708-en

Max time kernel

119s

Max time network

89s

Command Line

"C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.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\ybobd.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\hiwow.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\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ybobd.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\hiwow.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1560 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\ybobd.exe
PID 1560 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\ybobd.exe
PID 1560 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\ybobd.exe
PID 1560 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\ybobd.exe
PID 1560 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 1560 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 1560 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 1560 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 980 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ybobd.exe C:\Users\Admin\AppData\Local\Temp\hiwow.exe
PID 980 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ybobd.exe C:\Users\Admin\AppData\Local\Temp\hiwow.exe
PID 980 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ybobd.exe C:\Users\Admin\AppData\Local\Temp\hiwow.exe
PID 980 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ybobd.exe C:\Users\Admin\AppData\Local\Temp\hiwow.exe

Processes

C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe

"C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

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

"C:\Users\Admin\AppData\Local\Temp\hiwow.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/1560-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1560-0-0x0000000000C20000-0x0000000000CA1000-memory.dmp

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

MD5 fed9ea9de2da988f5359360d895e3a95
SHA1 eabb4b90d3c8ac970dc90fa7596eb710af2871c7
SHA256 fc840cfb7e3d5eb0efa65311c5d635e40783da929253bfaa5c56fd2324c43a82
SHA512 070094e30c5204ab246af1e566086dc045ad4ae75ab71f7e0a5b7ab8a8a69bdc562d6a77f157391ce580c8d4f35ee56bf937d9f67d24cf92813d5d2814e06838

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

MD5 a4c012750ad09216011736371002717b
SHA1 3979add492a004fd272a2111768a4382787acabc
SHA256 5f9c98664dcce80bc2a920d5c6c27e4a69f0e653d0fde06742e2d4c86dbf9897
SHA512 f5176072bd52fce63cb05368ac46cc9455ae5ab3720334365b6f2b0d9985135e3f3d021e3db67860544bef3a1cf7eb9acdbd0f0ab8e76ea8329bef437744c0a1

memory/1560-21-0x0000000000C20000-0x0000000000CA1000-memory.dmp

memory/980-20-0x0000000000020000-0x0000000000021000-memory.dmp

memory/980-19-0x0000000000E90000-0x0000000000F11000-memory.dmp

memory/1560-17-0x0000000000A60000-0x0000000000AE1000-memory.dmp

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

MD5 55e31f26b25cfb24b1ce0e636bf363e7
SHA1 316366c6f083492b84429410ee6a7d3091dcb2d1
SHA256 1247384f8bee6efdc410d440c371fac8319081401a86fc300cdd21abc5803e39
SHA512 53a61657aac6fc946fa047cc2dd6fad25a05d293c08cc895506f7ceb3e6d97bfdae11a7c137b179c06b2f8227e4004517fb61f0d1865f5bcdfff7428ee315968

memory/980-25-0x0000000000020000-0x0000000000021000-memory.dmp

memory/980-24-0x0000000000E90000-0x0000000000F11000-memory.dmp

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

MD5 e51cbb4e8ef097fd5ad51503e223464c
SHA1 e5046a51b068c1e64dcd0d4e2d1edb6a3745aaf3
SHA256 b0625ee30dcc5342f2d8288ff926de5fe8f7a9696c081b60e87a30b54f6ebdcc
SHA512 d676dc654a3535148d42203a4b1d93897aec76a41601d2de8018298652d3578cd04a54c12c1bf102a180c9e52099b5fc33f9832f456bae62311fad9d74885852

memory/980-40-0x0000000003420000-0x00000000034B9000-memory.dmp

memory/980-42-0x0000000000E90000-0x0000000000F11000-memory.dmp

memory/2000-43-0x0000000000FF0000-0x0000000001089000-memory.dmp

memory/2000-44-0x0000000000FF0000-0x0000000001089000-memory.dmp

memory/2000-48-0x0000000000FF0000-0x0000000001089000-memory.dmp

memory/2000-49-0x0000000000FF0000-0x0000000001089000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-09 22:30

Reported

2024-10-09 22:32

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.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\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\fesah.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fesah.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\zuwyt.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\zuwyt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\fesah.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3256 wrote to memory of 4424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\fesah.exe
PID 3256 wrote to memory of 4424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\fesah.exe
PID 3256 wrote to memory of 4424 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Users\Admin\AppData\Local\Temp\fesah.exe
PID 3256 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 3256 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 3256 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe C:\Windows\SysWOW64\cmd.exe
PID 4424 wrote to memory of 3484 N/A C:\Users\Admin\AppData\Local\Temp\fesah.exe C:\Users\Admin\AppData\Local\Temp\zuwyt.exe
PID 4424 wrote to memory of 3484 N/A C:\Users\Admin\AppData\Local\Temp\fesah.exe C:\Users\Admin\AppData\Local\Temp\zuwyt.exe
PID 4424 wrote to memory of 3484 N/A C:\Users\Admin\AppData\Local\Temp\fesah.exe C:\Users\Admin\AppData\Local\Temp\zuwyt.exe

Processes

C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe

"C:\Users\Admin\AppData\Local\Temp\68267e9f2ac17916fd79fa79f86afa890669ddf5c47885927363b456e20dbe92N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\fesah.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\zuwyt.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.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 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 101.11.19.2.in-addr.arpa udp
KR 218.54.31.166:11300 tcp
JP 133.242.129.155:11300 tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/3256-0-0x0000000000F20000-0x0000000000FA1000-memory.dmp

memory/3256-1-0x0000000000E90000-0x0000000000E91000-memory.dmp

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

MD5 4e2592fddeec3a1fb28591ec8e3f690a
SHA1 3b144b1985fd757ab15d3f997439373a0b7e4bb2
SHA256 c0a67f7b8197180ab79e8312077f2c0308969f7ded4a9a57de7262988a0ccae5
SHA512 1e18da306c206fe3b53b65cd7a4a75b1ede448a84962480be4b834a2b57a09e51078ed5eec3700725eb2a35c2c62ae40876a21c68b12e19da5f7d15216a53712

memory/4424-10-0x00000000004B0000-0x0000000000531000-memory.dmp

memory/4424-14-0x00000000009D0000-0x00000000009D1000-memory.dmp

memory/3256-17-0x0000000000F20000-0x0000000000FA1000-memory.dmp

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

MD5 a4c012750ad09216011736371002717b
SHA1 3979add492a004fd272a2111768a4382787acabc
SHA256 5f9c98664dcce80bc2a920d5c6c27e4a69f0e653d0fde06742e2d4c86dbf9897
SHA512 f5176072bd52fce63cb05368ac46cc9455ae5ab3720334365b6f2b0d9985135e3f3d021e3db67860544bef3a1cf7eb9acdbd0f0ab8e76ea8329bef437744c0a1

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

MD5 44004783f9a2cae9d5b784880d6ac29a
SHA1 e0fe5b9faa576404a633d81f78bb640e8e3db791
SHA256 0cb740fb55f865ad905b41be217aa47743d919a106fd1a4e56aed686677e0091
SHA512 8d7eee80f47e9aeab8ee0abcc686ee14c13b639662d82e3a6ca25093f0385992f35c84483a6f049747f0a62eac36f943b82c10ddb18d94fd88d54c3fa18878e2

memory/4424-20-0x00000000004B0000-0x0000000000531000-memory.dmp

memory/4424-21-0x00000000009D0000-0x00000000009D1000-memory.dmp

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

MD5 ce456defd245852cd7260499d8f10912
SHA1 24c1e69620c481fa70c63ba56c81d8bfab5981e7
SHA256 164c5a485a3e154a0527c6bfc5b17a25c409c1e586a12bb9b8377d96ba1694f8
SHA512 665cc3e0a829cbed56ecc5aa1f2ec064a10e9edd61813abf9cf8225bcc3054238ca49bdec2ede4b8a56ab170597edf2a716b27b32a990ccd2855ab84f7a34c38

memory/3484-37-0x0000000000650000-0x00000000006E9000-memory.dmp

memory/4424-40-0x00000000004B0000-0x0000000000531000-memory.dmp

memory/3484-41-0x0000000000620000-0x0000000000622000-memory.dmp

memory/3484-42-0x0000000000650000-0x00000000006E9000-memory.dmp

memory/3484-47-0x0000000000620000-0x0000000000622000-memory.dmp

memory/3484-46-0x0000000000650000-0x00000000006E9000-memory.dmp

memory/3484-48-0x0000000000650000-0x00000000006E9000-memory.dmp