Malware Analysis Report

2024-11-13 17:38

Sample ID 241108-csvp2sslev
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

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Checks processor information in registry

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Enumerates system info in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-08 02:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win7-20240903-en

Max time kernel

150s

Max time network

150s

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 2728 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2728 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2728 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2728 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2728 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2728 wrote to memory of 2736 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\nsj6450.tmp\System.dll

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

memory/2728-14-0x00000000037A0000-0x0000000004BD5000-memory.dmp

memory/2728-15-0x0000000076D41000-0x0000000076E42000-memory.dmp

memory/2728-16-0x0000000076D40000-0x0000000076EE9000-memory.dmp

memory/2728-17-0x00000000037A0000-0x0000000004BD5000-memory.dmp

memory/2736-18-0x0000000076D40000-0x0000000076EE9000-memory.dmp

memory/2736-19-0x00000000004A0000-0x0000000001502000-memory.dmp

memory/2728-25-0x00000000037A0000-0x0000000004BD5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 162.251.122.91:80 tcp
US 162.251.122.91:80 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.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
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.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

Files

C:\Users\Admin\AppData\Local\Temp\nst8FAE.tmp\System.dll

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

memory/3812-13-0x00000000030C0000-0x00000000044F5000-memory.dmp

memory/3812-14-0x0000000077681000-0x00000000777A1000-memory.dmp

memory/3812-15-0x00000000030C0000-0x00000000044F5000-memory.dmp

memory/3812-16-0x0000000074B25000-0x0000000074B26000-memory.dmp

memory/3100-17-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/3100-18-0x0000000077708000-0x0000000077709000-memory.dmp

memory/3100-19-0x0000000001700000-0x0000000002B35000-memory.dmp

memory/3100-20-0x0000000077725000-0x0000000077726000-memory.dmp

memory/3100-21-0x00000000004A0000-0x00000000016F4000-memory.dmp

memory/3100-22-0x0000000077681000-0x00000000777A1000-memory.dmp

memory/3812-28-0x00000000030C0000-0x00000000044F5000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win7-20240903-en

Max time kernel

118s

Max time network

118s

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 2396 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

140s

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 3204 wrote to memory of 4956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3204 wrote to memory of 4956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3204 wrote to memory of 4956 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 4956 -ip 4956

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.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 68.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win7-20241010-en

Max time kernel

73s

Max time network

19s

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/1736-0-0x000000002FD11000-0x000000002FD12000-memory.dmp

memory/1736-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1736-2-0x00000000719BD000-0x00000000719C8000-memory.dmp

memory/1736-4-0x00000000719BD000-0x00000000719C8000-memory.dmp

Analysis: behavioral6

Detonation Overview

Submitted

2024-11-08 02:20

Reported

2024-11-08 02:23

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

136s

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
GB 52.109.28.47:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 93.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/1268-0-0x00007FF88A750000-0x00007FF88A760000-memory.dmp

memory/1268-1-0x00007FF8CA76D000-0x00007FF8CA76E000-memory.dmp

memory/1268-5-0x00007FF88A750000-0x00007FF88A760000-memory.dmp

memory/1268-4-0x00007FF88A750000-0x00007FF88A760000-memory.dmp

memory/1268-3-0x00007FF88A750000-0x00007FF88A760000-memory.dmp

memory/1268-2-0x00007FF88A750000-0x00007FF88A760000-memory.dmp

memory/1268-11-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-12-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-10-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-14-0x00007FF8886F0000-0x00007FF888700000-memory.dmp

memory/1268-13-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-16-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-19-0x00007FF8886F0000-0x00007FF888700000-memory.dmp

memory/1268-18-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-21-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-20-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-17-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-15-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-9-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-8-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-7-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-6-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-33-0x00007FF8CA6D0000-0x00007FF8CA8C5000-memory.dmp

memory/1268-34-0x00007FF8CA76D000-0x00007FF8CA76E000-memory.dmp