Malware Analysis Report

2024-11-16 13:27

Sample ID 240806-a5y7wstfnp
Target a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d
SHA256 a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d
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

a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d

Threat Level: Known bad

The file a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d was found to be: Known bad.

Malicious Activity Summary

upx urelas discovery trojan

Urelas family

Urelas

Executes dropped EXE

Checks computer location settings

UPX packed file

Deletes itself

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-06 00:48

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

2024-08-06 00:48

Reported

2024-08-06 00:50

Platform

win7-20240704-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.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

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\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\huter.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.exe

"C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.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 112.175.88.209:11120 tcp
KR 112.175.88.208:11150 tcp
KR 112.175.88.209:11170 tcp
KR 112.175.88.207:11150 tcp

Files

memory/2736-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 2d507b56586254f3222c1a4b562858b8
SHA1 902ce02257377399e03b5503de74acd6f4b871a4
SHA256 095a14b3bf2e833733f4ccfa35890546841ea696050d58699bb225d1d8052407
SHA512 f673e98d635fb53a4fce192dc8ca0cbe8527f149ff337e7b4e075c582a0113ab674d688fc6a94d00f9a77aac68db55374005f0d5fb47baf24edd9d7db301db26

memory/2744-10-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 7814b426a56e6761c73e7d6cf2bcf57d
SHA1 4d7c78359a27871760e8da019e04ecc72cc8b102
SHA256 ecbdc713c130a4e6cbfe7a7e84fa35777c2fb6bed93be8a1760d336596b52bad
SHA512 6d31e6151320aec40143b209381b3fa0e88452ed265f0002f4467057b82acaa5f2958813a43c05c984c7edf3046d4442a7295533ac8cac6e9f2ee96370bcc41a

memory/2736-18-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/2744-21-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2744-23-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2744-29-0x0000000000400000-0x0000000000431000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 00:48

Reported

2024-08-06 00:50

Platform

win10v2004-20240802-en

Max time kernel

120s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.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\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.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\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.exe

"C:\Users\Admin\AppData\Local\Temp\a272bda4418bb14c6f6249359e9b8a29671304f304a1aacb969e63d7c034fb9d.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 g.bing.com udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
KR 112.175.88.209:11120 tcp
KR 112.175.88.208:11150 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
KR 112.175.88.209:11170 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
KR 112.175.88.207:11150 tcp
US 52.111.227.14:443 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/1560-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 b592a0114266330b61667641525b27a3
SHA1 6b28ebecf0f1f89bf4aadde87a892e8f07b7648f
SHA256 421c32114643b6831806b2bf33191c3d24fcaa6def57a514b8e96c3b7acf507c
SHA512 8edad905a297cdf77f58b0d30622dfdbfe8aa4bd400792b4cd106cbaed7e76244e5498e70bdf27e1af63e687ee4344f51badc0fe1d7bb084a8c7a4c620c49650

memory/4092-15-0x0000000000400000-0x0000000000431000-memory.dmp

memory/1560-18-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 7814b426a56e6761c73e7d6cf2bcf57d
SHA1 4d7c78359a27871760e8da019e04ecc72cc8b102
SHA256 ecbdc713c130a4e6cbfe7a7e84fa35777c2fb6bed93be8a1760d336596b52bad
SHA512 6d31e6151320aec40143b209381b3fa0e88452ed265f0002f4467057b82acaa5f2958813a43c05c984c7edf3046d4442a7295533ac8cac6e9f2ee96370bcc41a

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/4092-21-0x0000000000400000-0x0000000000431000-memory.dmp

memory/4092-23-0x0000000000400000-0x0000000000431000-memory.dmp

memory/4092-29-0x0000000000400000-0x0000000000431000-memory.dmp