Malware Analysis Report

2025-04-03 14:22

Sample ID 241210-ebmzzsxqak
Target ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
SHA256 ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e
Tags
guloader discovery downloader evasion spyware stealer collection
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 Overview

score
10/10

SHA256

ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e

Threat Level: Known bad

The file ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe was found to be: Known bad.

Malicious Activity Summary

guloader discovery downloader evasion spyware stealer collection

Guloader,Cloudeye

Guloader family

Disables Task Manager via registry modification

Loads dropped DLL

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Windows directory

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_office_path

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-10 03:46

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-10 03:46

Reported

2024-12-10 03:48

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Disables Task Manager via registry modification

evasion

Reads user/profile data of web browsers

spyware stealer

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

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Fonts\inconversibility\agouti.ini C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.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\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe
PID 2692 wrote to memory of 1652 N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 172.217.169.78:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.178.3:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.178.3:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.212.193:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 checkip.dyndns.org udp
BR 132.226.247.73:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.67.152:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 crl.microsoft.com udp
GB 88.221.134.146:80 crl.microsoft.com tcp
US 8.8.8.8:53 www.microsoft.com udp
GB 95.100.245.144:80 www.microsoft.com tcp

Files

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

MD5 17ed1c86bd67e78ade4712be48a7d2bd
SHA1 1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
SHA512 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

memory/2692-17-0x00000000036B0000-0x0000000004645000-memory.dmp

memory/2692-18-0x00000000776C1000-0x00000000777C2000-memory.dmp

memory/2692-19-0x00000000776C0000-0x0000000077869000-memory.dmp

memory/2692-20-0x00000000036B0000-0x0000000004645000-memory.dmp

memory/1652-21-0x00000000776C0000-0x0000000077869000-memory.dmp

memory/1652-43-0x00000000004C0000-0x0000000001522000-memory.dmp

memory/1652-44-0x00000000004C0000-0x00000000004DE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-10 03:46

Reported

2024-12-10 03:48

Platform

win10v2004-20241007-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Disables Task Manager via registry modification

evasion

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

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

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Fonts\inconversibility\agouti.ini C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.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\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe

"C:\Users\Admin\AppData\Local\Temp\ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 172.217.169.78:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.178.3:80 c.pki.goog tcp
US 8.8.8.8:53 78.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 3.178.250.142.in-addr.arpa udp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.178.3:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.212.193:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 193.212.58.216.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
US 193.122.130.0:80 checkip.dyndns.org tcp
US 8.8.8.8:53 0.130.122.193.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.67.152:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 152.67.21.104.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsrBD47.tmp\System.dll

MD5 17ed1c86bd67e78ade4712be48a7d2bd
SHA1 1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
SHA512 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

memory/1132-15-0x0000000003400000-0x0000000004395000-memory.dmp

memory/1132-16-0x0000000077B61000-0x0000000077C81000-memory.dmp

memory/1132-17-0x0000000010004000-0x0000000010005000-memory.dmp

memory/1132-18-0x0000000003400000-0x0000000004395000-memory.dmp

memory/1524-19-0x0000000001720000-0x00000000026B5000-memory.dmp

memory/1524-20-0x0000000077BE8000-0x0000000077BE9000-memory.dmp

memory/1524-21-0x0000000077C05000-0x0000000077C06000-memory.dmp

memory/1524-34-0x0000000001720000-0x00000000026B5000-memory.dmp

memory/1524-35-0x00000000004C0000-0x0000000001714000-memory.dmp

memory/1524-36-0x0000000077B61000-0x0000000077C81000-memory.dmp

memory/1524-37-0x00000000004C0000-0x00000000004DE000-memory.dmp

memory/1524-38-0x00000000351C0000-0x0000000035764000-memory.dmp

memory/1524-39-0x0000000035770000-0x000000003580C000-memory.dmp

memory/1524-41-0x0000000035C10000-0x0000000035CA2000-memory.dmp

memory/1524-42-0x0000000035CC0000-0x0000000035D10000-memory.dmp

memory/1524-43-0x0000000035E50000-0x0000000036012000-memory.dmp

memory/1524-45-0x00000000360E0000-0x00000000360EA000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-12-10 03:46

Reported

2024-12-10 03:48

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

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 1960 -s 224

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-12-10 03:46

Reported

2024-12-10 03:48

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

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 3504 wrote to memory of 4244 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3504 wrote to memory of 4244 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3504 wrote to memory of 4244 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 4244 -ip 4244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 21.49.80.91.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 86.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

N/A