Malware Analysis Report

2025-04-03 14:26

Sample ID 241217-jgy2natqhw
Target PAYMENT ADVICE TT07180016-24_pdf.exe
SHA256 360acac9133b07ab36c79af7aa5e46850a97a297696bc812bfd25c4415ce4449
Tags
guloader collection discovery downloader evasion spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

360acac9133b07ab36c79af7aa5e46850a97a297696bc812bfd25c4415ce4449

Threat Level: Known bad

The file PAYMENT ADVICE TT07180016-24_pdf.exe was found to be: Known bad.

Malicious Activity Summary

guloader collection discovery downloader evasion spyware stealer

Guloader family

Guloader,Cloudeye

Disables Task Manager via registry modification

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Loads dropped DLL

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in System32 directory

Suspicious use of NtCreateThreadExHideFromDebugger

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

outlook_office_path

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-17 07:39

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-17 07:39

Reported

2024-12-17 07:41

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\hjemmecomputeren.Pot C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1528 set thread context of 804 N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

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\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe"

C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
FR 142.250.75.238:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
FR 142.250.179.67:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
FR 142.250.179.67:80 o.pki.goog tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 238.75.250.142.in-addr.arpa udp
US 8.8.8.8:53 67.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
FR 142.250.74.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.74.250.142.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
US 158.101.44.242:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 172.67.177.134:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 134.177.67.172.in-addr.arpa udp
US 8.8.8.8:53 242.44.101.158.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 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsh8C62.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/1528-14-0x0000000002A60000-0x0000000005381000-memory.dmp

memory/1528-15-0x0000000077E21000-0x0000000077F41000-memory.dmp

memory/1528-16-0x0000000002A60000-0x0000000005381000-memory.dmp

memory/804-17-0x00000000016C0000-0x0000000003FE1000-memory.dmp

memory/804-30-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/804-31-0x00000000016C0000-0x0000000003FE1000-memory.dmp

memory/804-32-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/804-33-0x0000000000460000-0x000000000047E000-memory.dmp

memory/804-34-0x0000000036D00000-0x00000000372A4000-memory.dmp

memory/804-35-0x00000000372B0000-0x000000003734C000-memory.dmp

memory/804-36-0x0000000037720000-0x00000000377B2000-memory.dmp

memory/804-37-0x0000000037350000-0x00000000373A0000-memory.dmp

memory/804-38-0x00000000378D0000-0x0000000037A92000-memory.dmp

memory/804-39-0x0000000037B50000-0x0000000037B5A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-12-17 07:39

Reported

2024-12-17 07:41

Platform

win7-20240903-en

Max time kernel

117s

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 2692 -s 224

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-12-17 07:39

Reported

2024-12-17 07:41

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

145s

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 5020 wrote to memory of 3832 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5020 wrote to memory of 3832 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5020 wrote to memory of 3832 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 3832 -ip 3832

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3832 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 22.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-17 07:39

Reported

2024-12-17 07:41

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\hjemmecomputeren.Pot C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2692 set thread context of 2376 N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

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\PAYMENT ADVICE TT07180016-24_pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe"

C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe

"C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVICE TT07180016-24_pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
FR 142.250.75.238:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
FR 142.250.179.67:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
FR 142.250.179.67:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
FR 142.250.74.225:443 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 172.67.177.134:443 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\nst5996.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/2692-16-0x0000000002E90000-0x00000000057B1000-memory.dmp

memory/2692-18-0x0000000077270000-0x0000000077419000-memory.dmp

memory/2692-17-0x0000000077271000-0x0000000077372000-memory.dmp

memory/2692-19-0x0000000077460000-0x0000000077536000-memory.dmp

memory/2692-20-0x0000000002E90000-0x00000000057B1000-memory.dmp

memory/2376-21-0x0000000077270000-0x0000000077419000-memory.dmp

memory/2376-43-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/2376-44-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/2376-45-0x0000000000460000-0x000000000047E000-memory.dmp