Malware Analysis Report

2024-12-06 03:01

Sample ID 241117-k9cvkaxajr
Target 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a
SHA256 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a

Threat Level: Known bad

The file 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader,Cloudeye

Guloader family

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Enumerates physical storage devices

Checks processor information in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Enumerates system info in registry

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-17 09:17

Signatures

Unsigned PE

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

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

137s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1220 wrote to memory of 2740 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1220 wrote to memory of 2740 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1220 wrote to memory of 2740 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2740 -ip 2740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2740 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win7-20240903-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Accelerationsbaner.doc"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A

Processes

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Accelerationsbaner.doc"

Network

N/A

Files

memory/1324-0-0x000000002F101000-0x000000002F102000-memory.dmp

memory/1324-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1324-2-0x000000007126D000-0x0000000071278000-memory.dmp

memory/1324-4-0x000000007126D000-0x0000000071278000-memory.dmp

Analysis: behavioral6

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Accelerationsbaner.doc" /o ""

Signatures

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Processes

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE

"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Accelerationsbaner.doc" /o ""

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
GB 52.109.32.7:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 7.32.109.52.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 31.73.42.20.in-addr.arpa udp

Files

memory/1516-2-0x00007FFD000F0000-0x00007FFD00100000-memory.dmp

memory/1516-3-0x00007FFD000F0000-0x00007FFD00100000-memory.dmp

memory/1516-0-0x00007FFD000F0000-0x00007FFD00100000-memory.dmp

memory/1516-4-0x00007FFD000F0000-0x00007FFD00100000-memory.dmp

memory/1516-1-0x00007FFD4010D000-0x00007FFD4010E000-memory.dmp

memory/1516-6-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-5-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-7-0x00007FFD000F0000-0x00007FFD00100000-memory.dmp

memory/1516-9-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-8-0x00007FFCFE090000-0x00007FFCFE0A0000-memory.dmp

memory/1516-10-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-12-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-15-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-14-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-19-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-20-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-18-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-17-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-16-0x00007FFCFE090000-0x00007FFCFE0A0000-memory.dmp

memory/1516-13-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-11-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-32-0x00007FFD40070000-0x00007FFD40265000-memory.dmp

memory/1516-33-0x00007FFD4010D000-0x00007FFD4010E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win7-20241010-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

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\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2064 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

Network

Country Destination Domain Proto
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp

Files

\Users\Admin\AppData\Local\Temp\nsyE31F.tmp\System.dll

MD5 564bb0373067e1785cba7e4c24aab4bf
SHA1 7c9416a01d821b10b2eef97b80899d24014d6fc1
SHA256 7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
SHA512 22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

memory/2064-14-0x0000000002D10000-0x0000000004145000-memory.dmp

memory/2064-15-0x0000000002D10000-0x0000000004145000-memory.dmp

memory/2064-16-0x0000000077A91000-0x0000000077B92000-memory.dmp

memory/2064-17-0x0000000077A90000-0x0000000077C39000-memory.dmp

memory/2756-18-0x0000000077A90000-0x0000000077C39000-memory.dmp

memory/2756-19-0x00000000004A0000-0x0000000001502000-memory.dmp

memory/2064-24-0x0000000002D10000-0x0000000004145000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

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\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 8.8.8.8:53 26.73.42.20.in-addr.arpa udp
US 162.251.122.91:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\nskC593.tmp\System.dll

MD5 564bb0373067e1785cba7e4c24aab4bf
SHA1 7c9416a01d821b10b2eef97b80899d24014d6fc1
SHA256 7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
SHA512 22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

memory/468-13-0x0000000003140000-0x0000000004575000-memory.dmp

memory/468-14-0x0000000077721000-0x0000000077841000-memory.dmp

memory/468-15-0x0000000003140000-0x0000000004575000-memory.dmp

memory/468-16-0x0000000074BC5000-0x0000000074BC6000-memory.dmp

memory/2820-17-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/2820-18-0x00000000777A8000-0x00000000777A9000-memory.dmp

memory/2820-19-0x00000000777C5000-0x00000000777C6000-memory.dmp

memory/2820-20-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/2820-21-0x00000000004A0000-0x00000000016F4000-memory.dmp

memory/2820-22-0x0000000077721000-0x0000000077841000-memory.dmp

memory/468-28-0x0000000003140000-0x0000000004575000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-17 09:17

Reported

2024-11-17 09:20

Platform

win7-20240903-en

Max time kernel

120s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1804 -s 220

Network

N/A

Files

N/A