Malware Analysis Report

2024-11-16 13:25

Sample ID 241014-yv9gwatflg
Target 43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118
SHA256 7fce64c5c5831ed61df104c4e787fdfc9772fd4dbe8ef1a0f60c679f5bcf16aa
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

7fce64c5c5831ed61df104c4e787fdfc9772fd4dbe8ef1a0f60c679f5bcf16aa

Threat Level: Known bad

The file 43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Checks computer location settings

Deletes itself

Executes dropped EXE

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

2024-10-14 20:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-14 20:07

Reported

2024-10-14 20:10

Platform

win7-20240903-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.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\biudfw.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.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\biudfw.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\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
KR 218.54.47.76:11170 tcp
KR 218.54.47.77:11150 tcp

Files

memory/2084-0-0x0000000000E10000-0x0000000000E45000-memory.dmp

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

MD5 0473779af26f5598ed09ccb012dcbb43
SHA1 9c3387cc0a923f4a10a7335245d2d928f61972d6
SHA256 3b40a935e381b50395200a63a31c0ed3c7ebb68f65139a9119c082a67ba64936
SHA512 4d817fd9f3945fc766c7af8c988e3f0a936cdc8f88f626656e42f6c8b42ce42245c6fe8687e87e1bebe7c390886e38afa7520bc0e0c4e873dd82d1e23f32dbf9

memory/2084-7-0x0000000000410000-0x0000000000445000-memory.dmp

memory/2944-10-0x0000000000CE0000-0x0000000000D15000-memory.dmp

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

MD5 18da1fa6e662efbb03311968b810f706
SHA1 d36dbdd5ca383a2eb025959877dcc07a95079b06
SHA256 95f3230e7dfe567a4ba104380354e09d7e3ff493b14f44314389251082cb772d
SHA512 3de0c7d2be6eabdce239e306b5ee011fcddd6ca6f6db820a4e9ea7fa07cd81a777d4aa9082f55548e4938ea70ab43add8afbd3f6b1424977eacf294f6d74cef0

memory/2084-18-0x0000000000E10000-0x0000000000E45000-memory.dmp

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

MD5 55e10a9af74d3f3fa5ae3cb7ff5ad9d4
SHA1 449221fd8d7196a54de2bd583625d8d1b64db56a
SHA256 a945a44cfe50423c01f26a16445ed177a347052e791364a9cb7de6bcaa18f3c1
SHA512 4af5ba74467b4c61302ea9571f19346c05f911843f2c6153fcd9a7340f9bc6e1f8867cdb72ec7ba0dc4930199aa5c302711ad5da9fd35241839418f6e70a515a

memory/2944-21-0x0000000000CE0000-0x0000000000D15000-memory.dmp

memory/2944-23-0x0000000000CE0000-0x0000000000D15000-memory.dmp

memory/2944-30-0x0000000000CE0000-0x0000000000D15000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-14 20:07

Reported

2024-10-14 20:10

Platform

win10v2004-20241007-en

Max time kernel

139s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\biudfw.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\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\biudfw.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\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\43f70f6bb37593e40b4943e9e95edf48_JaffaCakes118.exe"

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

"C:\Users\Admin\AppData\Local\Temp\biudfw.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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
KR 218.54.47.76:11120 tcp
KR 218.54.47.74:11150 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
KR 218.54.47.76:11170 tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
KR 218.54.47.77:11150 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2080-0-0x00000000002C0000-0x00000000002F5000-memory.dmp

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

MD5 885b73f7f66530b5d0fee7dc932cd0e0
SHA1 17d0e5d7c5e539223f49f8dd8548405a1defee7b
SHA256 c4215a3dd1645b1a417ad973d3e9fa0f5c43f8fdb8fdfa417406dfba6a3eb161
SHA512 4db24820370980212cefeb4102fad63b38866dde94401fc403e96077d17213c6565b1702fd2b6e707c6235c4d4c70983e3b8ec10868afabcbbfb6c2aecf0e67b

memory/2980-10-0x00000000009A0000-0x00000000009D5000-memory.dmp

memory/2080-15-0x00000000002C0000-0x00000000002F5000-memory.dmp

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

MD5 18da1fa6e662efbb03311968b810f706
SHA1 d36dbdd5ca383a2eb025959877dcc07a95079b06
SHA256 95f3230e7dfe567a4ba104380354e09d7e3ff493b14f44314389251082cb772d
SHA512 3de0c7d2be6eabdce239e306b5ee011fcddd6ca6f6db820a4e9ea7fa07cd81a777d4aa9082f55548e4938ea70ab43add8afbd3f6b1424977eacf294f6d74cef0

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

MD5 55e10a9af74d3f3fa5ae3cb7ff5ad9d4
SHA1 449221fd8d7196a54de2bd583625d8d1b64db56a
SHA256 a945a44cfe50423c01f26a16445ed177a347052e791364a9cb7de6bcaa18f3c1
SHA512 4af5ba74467b4c61302ea9571f19346c05f911843f2c6153fcd9a7340f9bc6e1f8867cdb72ec7ba0dc4930199aa5c302711ad5da9fd35241839418f6e70a515a

memory/2980-18-0x00000000009A0000-0x00000000009D5000-memory.dmp

memory/2980-20-0x00000000009A0000-0x00000000009D5000-memory.dmp

memory/2980-26-0x00000000009A0000-0x00000000009D5000-memory.dmp