Malware Analysis Report

2024-11-16 13:26

Sample ID 241010-pq3dbs1enm
Target 55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N
SHA256 55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0
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

55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0

Threat Level: Known bad

The file 55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Deletes itself

Loads dropped DLL

Checks computer location settings

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-10 12:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-10 12:32

Reported

2024-10-10 12:34

Platform

win7-20240903-en

Max time kernel

119s

Max time network

77s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.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\elzyi.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\zizyu.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\zizyu.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\elzyi.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 2964 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\elzyi.exe
PID 2964 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\elzyi.exe
PID 2964 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\elzyi.exe
PID 2964 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\elzyi.exe
PID 2964 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 2964 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 2964 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 2964 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 3060 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\elzyi.exe C:\Users\Admin\AppData\Local\Temp\zizyu.exe
PID 3060 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\elzyi.exe C:\Users\Admin\AppData\Local\Temp\zizyu.exe
PID 3060 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\elzyi.exe C:\Users\Admin\AppData\Local\Temp\zizyu.exe
PID 3060 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\elzyi.exe C:\Users\Admin\AppData\Local\Temp\zizyu.exe

Processes

C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe

"C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

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

"C:\Users\Admin\AppData\Local\Temp\zizyu.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/2964-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2964-0-0x0000000000C30000-0x0000000000CB1000-memory.dmp

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

MD5 c42dcb94865aa2b66755a5a0fbd559b8
SHA1 23a53df0128fd8ed225d29f909f40a805ca58ba6
SHA256 d954aef8afbcfbc208cb3b1bcd3b91a217b0474567ba7f40247cf94cae54df64
SHA512 f32062b573c1d3412c10ef7eee73c8d4f0d4fb7776ca508a5b0270ea6bbb6d677d4bb049d4c52b6d1fa7fe304e17c1713eb59e1b148c02f2a7fdd74d232cc926

memory/2964-19-0x0000000000C30000-0x0000000000CB1000-memory.dmp

memory/3060-21-0x00000000002E0000-0x0000000000361000-memory.dmp

memory/3060-20-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2964-15-0x0000000002850000-0x00000000028D1000-memory.dmp

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

MD5 0b5d9b9dbd7c276741af6ee45404c08c
SHA1 d81a27eb6c8b2054d7423ef081d366569e1c6bb1
SHA256 e2618db90f2a2c8c750ecc9ffb97b9794f0a72a618dc4c226aa756e235ef9f79
SHA512 436eaa2ccfb6d0b151a45ced1d76587db9fc1dc16a5b0a0797c9694e59a4fe4e10e1d7b70e03e1317c70a705d0a0764556543d288709e3596906278e0fa40493

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

MD5 1907692761ac2c20ef9d5f0b882903f1
SHA1 86af4563ef0584e27146db657e7a185518770da0
SHA256 b71b6f04a697f80da9f6caf9db79989aea2357365131cac436ea32fa9e51401c
SHA512 10cefb07867fdacb1f26210e451e2629a7905300712c299dabf16a65bd8f8b428b131ad3c14697f26548fce56f5698b95d2b09d3c08549a3ba83cdf35b4780bb

memory/3060-24-0x0000000000020000-0x0000000000021000-memory.dmp

memory/3060-25-0x00000000002E0000-0x0000000000361000-memory.dmp

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

MD5 4b7b8c849830aa2a5c9a9bf71097f648
SHA1 85636dad57dc9691dfdbe4e6a0178137cbf9f24d
SHA256 9f8cc58bd48ebcb2f7775fb6956f8139c94a253d1788de1a747d88aae4e39e35
SHA512 3e1bdb7f03b066c7f8b23fd2934bf4a2472a785d9731e1e438bbf58896d461a2641ac5fd3197386b9c31f81771c7d06856a1cb566d512b3490f845126adbbba5

memory/3060-38-0x0000000003640000-0x00000000036D9000-memory.dmp

memory/2472-43-0x00000000009E0000-0x0000000000A79000-memory.dmp

memory/2472-44-0x00000000009E0000-0x0000000000A79000-memory.dmp

memory/3060-42-0x00000000002E0000-0x0000000000361000-memory.dmp

memory/2472-48-0x00000000009E0000-0x0000000000A79000-memory.dmp

memory/2472-49-0x00000000009E0000-0x0000000000A79000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-10 12:32

Reported

2024-10-10 12:34

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ozodf.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ozodf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\poizd.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\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ozodf.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\poizd.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3476 wrote to memory of 2272 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\ozodf.exe
PID 3476 wrote to memory of 2272 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\ozodf.exe
PID 3476 wrote to memory of 2272 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Users\Admin\AppData\Local\Temp\ozodf.exe
PID 3476 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 3476 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 3476 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe C:\Windows\SysWOW64\cmd.exe
PID 2272 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\ozodf.exe C:\Users\Admin\AppData\Local\Temp\poizd.exe
PID 2272 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\ozodf.exe C:\Users\Admin\AppData\Local\Temp\poizd.exe
PID 2272 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\ozodf.exe C:\Users\Admin\AppData\Local\Temp\poizd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe

"C:\Users\Admin\AppData\Local\Temp\55dd77ef23b5a46b79ad15396596131fe5d0d6e4229e1ff8b8a1aabffee6e1a0N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\ozodf.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\poizd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.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 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
KR 218.54.31.166:11300 tcp
US 8.8.8.8:53 172.210.232.199.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/3476-0-0x0000000000F30000-0x0000000000FB1000-memory.dmp

memory/3476-1-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

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

MD5 9a3d0088139ed1e3c8989196d1deb8ca
SHA1 4a641f84e3337013faf632320a85e384f54286a5
SHA256 852d102e2fd5bb35074bb60f502cba820aa436b0dc90e46dc58d39778550930c
SHA512 f56eccc1feacaf046c43e03eb6c01dc7e48cbe190446920fe6841ffefe26084665caf13d14d123180267c742e0e5aeec9338798faf010de6bfb9d178e30772ba

memory/2272-11-0x0000000000D90000-0x0000000000E11000-memory.dmp

memory/2272-14-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

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

MD5 0b5d9b9dbd7c276741af6ee45404c08c
SHA1 d81a27eb6c8b2054d7423ef081d366569e1c6bb1
SHA256 e2618db90f2a2c8c750ecc9ffb97b9794f0a72a618dc4c226aa756e235ef9f79
SHA512 436eaa2ccfb6d0b151a45ced1d76587db9fc1dc16a5b0a0797c9694e59a4fe4e10e1d7b70e03e1317c70a705d0a0764556543d288709e3596906278e0fa40493

memory/3476-17-0x0000000000F30000-0x0000000000FB1000-memory.dmp

memory/3476-19-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

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

MD5 806f9f5fdfd0cdcb1ef36c6c38d4e12e
SHA1 75552f701a9bd7afe553c9019f5097e511e2123a
SHA256 244b53a85d28f0f4dc953855fff4f2f80f8d7d896c9ed0f3d0a5a4c8d7590b7e
SHA512 76c1eaf9f6cbd62f2a2dbc99b5335ac97181534bbdbcfcc425f3d146952c4faf06a78c4ed7eefd3d8a789c4583bd6f2ddff167e00802dbfad41de73c60a97abc

memory/2272-21-0x0000000000D90000-0x0000000000E11000-memory.dmp

memory/2272-22-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

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

MD5 b1ba884cbbd392fb469b583eb6a632a0
SHA1 d258fdfcd08cccfd27503db60f07fe50828c14b6
SHA256 d27b8e23059ebf3442c17b2ce94ed5e8ebadfdc3bad2339f56edcc44ae292cbd
SHA512 c3364c98ac3b476313d938e99260e0e0276298bb4f0293b1f71b067561ac2677ccd1f1de4b659bd222eb7772a0cc294ef4c393b7077bcda7f2e7d6db132ddc29

memory/2272-46-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

memory/4936-43-0x0000000000F80000-0x0000000001019000-memory.dmp

memory/2272-42-0x0000000000D90000-0x0000000000E11000-memory.dmp

memory/4936-40-0x00007FFB7C750000-0x00007FFB7C945000-memory.dmp

memory/4936-39-0x0000000000F80000-0x0000000001019000-memory.dmp

memory/4936-48-0x0000000000F80000-0x0000000001019000-memory.dmp

memory/4936-49-0x0000000000F80000-0x0000000001019000-memory.dmp