Malware Analysis Report

2024-11-13 17:38

Sample ID 241107-rl9yqatfjl
Target 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
SHA256 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a
Tags
guloader discovery downloader
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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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 Overview

score
10/10

SHA256

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a

Threat Level: Known bad

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

Malicious Activity Summary

guloader discovery downloader

Guloader family

Guloader,Cloudeye

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: MapViewOfSection

Enumerates system info in registry

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-07 14:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win7-20241023-en

Max time kernel

149s

Max time network

149s

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 2580 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064 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
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\nstB240.tmp\System.dll

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

memory/2580-14-0x00000000037A0000-0x0000000004BD5000-memory.dmp

memory/2580-16-0x0000000077950000-0x0000000077AF9000-memory.dmp

memory/2580-15-0x0000000077951000-0x0000000077A52000-memory.dmp

memory/2580-17-0x00000000037A0000-0x0000000004BD5000-memory.dmp

memory/2064-18-0x0000000077950000-0x0000000077AF9000-memory.dmp

memory/2064-19-0x00000000004A0000-0x0000000001502000-memory.dmp

memory/2580-25-0x00000000037A0000-0x0000000004BD5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

145s

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 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
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 162.251.122.91:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\nsj8F70.tmp\System.dll

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

memory/3340-13-0x0000000002FB0000-0x00000000043E5000-memory.dmp

memory/3340-14-0x0000000077C81000-0x0000000077DA1000-memory.dmp

memory/3340-15-0x0000000002FB0000-0x00000000043E5000-memory.dmp

memory/3340-16-0x0000000075125000-0x0000000075126000-memory.dmp

memory/3240-17-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/3240-18-0x0000000077D08000-0x0000000077D09000-memory.dmp

memory/3240-19-0x0000000077D25000-0x0000000077D26000-memory.dmp

memory/3240-20-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/3240-21-0x00000000004A0000-0x00000000016F4000-memory.dmp

memory/3240-22-0x0000000077C81000-0x0000000077DA1000-memory.dmp

memory/3340-28-0x0000000002FB0000-0x00000000043E5000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win7-20241023-en

Max time kernel

117s

Max time network

119s

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 2628 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

138s

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 2136 wrote to memory of 1240 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2136 wrote to memory of 1240 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2136 wrote to memory of 1240 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 412 -p 1240 -ip 1240

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 612

Network

Country Destination Domain Proto
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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 107.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win7-20240708-en

Max time kernel

119s

Max time network

120s

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/1300-0-0x000000002F891000-0x000000002F892000-memory.dmp

memory/1300-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1300-2-0x0000000070BCD000-0x0000000070BD8000-memory.dmp

memory/1300-4-0x0000000070BCD000-0x0000000070BD8000-memory.dmp

Analysis: behavioral6

Detonation Overview

Submitted

2024-11-07 14:18

Reported

2024-11-07 14:20

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

151s

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 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
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS 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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
NL 52.109.89.19:443 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 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 19.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 75.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3500-1-0x00007FFC36A2D000-0x00007FFC36A2E000-memory.dmp

memory/3500-0-0x00007FFBF6A10000-0x00007FFBF6A20000-memory.dmp

memory/3500-3-0x00007FFBF6A10000-0x00007FFBF6A20000-memory.dmp

memory/3500-4-0x00007FFBF6A10000-0x00007FFBF6A20000-memory.dmp

memory/3500-2-0x00007FFBF6A10000-0x00007FFBF6A20000-memory.dmp

memory/3500-6-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-7-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-5-0x00007FFBF6A10000-0x00007FFBF6A20000-memory.dmp

memory/3500-8-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-12-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-13-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-14-0x00007FFBF40B0000-0x00007FFBF40C0000-memory.dmp

memory/3500-11-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-15-0x00007FFBF40B0000-0x00007FFBF40C0000-memory.dmp

memory/3500-10-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-9-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-27-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp

memory/3500-28-0x00007FFC36A2D000-0x00007FFC36A2E000-memory.dmp

memory/3500-29-0x00007FFC36990000-0x00007FFC36B85000-memory.dmp