Malware Analysis Report

2024-11-13 17:38

Sample ID 241108-pc6tla1nax
Target 9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe
SHA256 9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

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 Overview

score
10/10

SHA256

9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b

Threat Level: Known bad

The file 9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader,Cloudeye

Guloader family

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Program crash

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-08 12:12

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-08 12:12

Reported

2024-11-08 12:14

Platform

win7-20241010-en

Max time kernel

119s

Max time network

125s

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 2564 -s 224

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-08 12:12

Reported

2024-11-08 12:14

Platform

win10v2004-20241007-en

Max time kernel

95s

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 428 wrote to memory of 4380 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 428 wrote to memory of 4380 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 428 wrote to memory of 4380 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 4380 -ip 4380

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.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 11.227.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-08 12:12

Reported

2024-11-08 12:14

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe"

Signatures

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\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe

"C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 480

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsd5D2E.tmp\System.dll

MD5 dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1 c9206ced48d1e5bc648b1d0f54cccc18bf643a14
SHA256 7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
SHA512 4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

memory/1044-16-0x0000000003750000-0x00000000047F6000-memory.dmp

memory/1044-17-0x0000000003750000-0x00000000047F6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-08 12:12

Reported

2024-11-08 12:14

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A drive.google.com N/A N/A
N/A drive.google.com N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.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\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe

"C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe"

C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe

"C:\Users\Admin\AppData\Local\Temp\9d118e57cb67114168ba111349bea057a3263dde14b3ad71c2a5c26a0b2ee28b.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4160 -ip 4160

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4160 -s 1060

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 142.250.187.206:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.187.227:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 206.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 225.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nshCA08.tmp\System.dll

MD5 dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1 c9206ced48d1e5bc648b1d0f54cccc18bf643a14
SHA256 7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
SHA512 4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

memory/4268-14-0x0000000003190000-0x0000000004236000-memory.dmp

memory/4268-15-0x0000000077361000-0x0000000077481000-memory.dmp

memory/4268-16-0x0000000074805000-0x0000000074806000-memory.dmp

memory/4268-18-0x0000000003190000-0x0000000004236000-memory.dmp

memory/4160-17-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-19-0x0000000001660000-0x0000000002706000-memory.dmp

memory/4160-20-0x00000000773E8000-0x00000000773E9000-memory.dmp

memory/4160-21-0x0000000077405000-0x0000000077406000-memory.dmp

memory/4160-34-0x0000000001660000-0x0000000002706000-memory.dmp

memory/4160-35-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-36-0x0000000000401000-0x0000000000404000-memory.dmp

memory/4160-37-0x0000000077361000-0x0000000077481000-memory.dmp

memory/4160-38-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-39-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-40-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-41-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4160-42-0x0000000001660000-0x0000000002706000-memory.dmp

memory/4160-43-0x0000000000401000-0x0000000000404000-memory.dmp