Malware Analysis Report

2024-11-16 13:27

Sample ID 240805-rt7tbssfng
Target 9ec9f0b2fb31fc1676c54936e2cb49b0N.exe
SHA256 5bdf8c0bd4b6bfef666605a0f007affdaa0c25683b1181c08ea425a75ac0d652
Tags
urelas discovery trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5bdf8c0bd4b6bfef666605a0f007affdaa0c25683b1181c08ea425a75ac0d652

Threat Level: Known bad

The file 9ec9f0b2fb31fc1676c54936e2cb49b0N.exe was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan upx

Urelas family

Urelas

Checks computer location settings

Deletes itself

Loads dropped DLL

Executes dropped EXE

UPX packed file

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-05 14:30

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: behavioral2

Detonation Overview

Submitted

2024-08-05 14:30

Reported

2024-08-05 14:32

Platform

win10v2004-20240802-en

Max time kernel

114s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.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

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\9ec9f0b2fb31fc1676c54936e2cb49b0N.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\9ec9f0b2fb31fc1676c54936e2cb49b0N.exe

"C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.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" "

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1904,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4340 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 148.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
KR 112.175.88.209:11120 tcp
KR 112.175.88.208:11150 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 19.58.20.217.in-addr.arpa udp
KR 112.175.88.209:11170 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
KR 112.175.88.207:11150 tcp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp

Files

memory/1900-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 8d3e173d6ec027f2a31cd3a981c78491
SHA1 cf30189543d605603dc0bdc58738bc23e419be37
SHA256 aaddacdbad09bedd3ebea4480828f06711f53ddca133631fd8a2f2e2476bbb27
SHA512 c0b0d431ca35b22b04ba075f1223aaeba3a9c086d451c7e51abf358f6e3b858228769e78704bec16ac9b74ef69f1d29e3c11ab064b11b701b760fbcb218b8d64

memory/1900-17-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 5eacf3fde6756c8d37df843d78173f3a
SHA1 09034f48ef63213f0fdd31d63a104604ffa2513e
SHA256 2a491280931f7b76047d2b1eace3e9cfa06254f4ed39fcb267705008bb85977a
SHA512 2b8d87198d6c988cea05d30318188a6eda5cec84f598f4840beb227245be67ab21e9a45b571328edec53804155a8d8eb316e45e73222e859c05655c7bf00862e

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/2052-20-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2052-22-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2052-28-0x0000000000400000-0x0000000000431000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-05 14:30

Reported

2024-08-05 14:32

Platform

win7-20240704-en

Max time kernel

90s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.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

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\9ec9f0b2fb31fc1676c54936e2cb49b0N.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\9ec9f0b2fb31fc1676c54936e2cb49b0N.exe

"C:\Users\Admin\AppData\Local\Temp\9ec9f0b2fb31fc1676c54936e2cb49b0N.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/2528-0-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 83a4ec50111ae77084527d12ece6655f
SHA1 e2425d04fc617a9a9f9911887f2d9f8de0df1853
SHA256 3b76d48ec9da58d15f652e340996ef66794a643957cdea4129e71c36f35db08a
SHA512 c186f53b0a9b94c4f624eebb38f452ca3a3c9e434dd5d97fa530910ce81ed4426e419e325b2b9cb89172ea7be4e74847e7f89ecd4f31ecb94d5d01b2a25bd81e

memory/2528-6-0x0000000002530000-0x0000000002561000-memory.dmp

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

MD5 5eacf3fde6756c8d37df843d78173f3a
SHA1 09034f48ef63213f0fdd31d63a104604ffa2513e
SHA256 2a491280931f7b76047d2b1eace3e9cfa06254f4ed39fcb267705008bb85977a
SHA512 2b8d87198d6c988cea05d30318188a6eda5cec84f598f4840beb227245be67ab21e9a45b571328edec53804155a8d8eb316e45e73222e859c05655c7bf00862e

memory/2528-17-0x0000000000400000-0x0000000000431000-memory.dmp

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

MD5 a01dba4c45102fc15292fd5591166536
SHA1 d96191c30e0f09439d8547f4ededbf6726ccd54b
SHA256 cc2f9d3db04690b746c18d40c70f8dbc9ca18520b68619d9ccaeac500af98904
SHA512 277a86f44c2648668205cd6c3c9f83feef147a5ad10839a130713eee9c931c26088d4dd95798b1d0e69f3439239abdee79d37656ad3963147a878a9433d60d32

memory/2072-20-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2072-22-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2072-28-0x0000000000400000-0x0000000000431000-memory.dmp