Malware Analysis Report

2024-12-06 03:03

Sample ID 241119-fkynhszgpc
Target 82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
SHA256 82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c
Tags
guloader vipkeylogger discovery downloader keylogger stealer collection spyware
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

82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c

Threat Level: Known bad

The file 82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe was found to be: Known bad.

Malicious Activity Summary

guloader vipkeylogger discovery downloader keylogger stealer collection spyware

Vipkeylogger family

Guloader family

VIPKeylogger

Guloader,Cloudeye

Loads dropped DLL

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Accesses Microsoft Outlook profiles

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Suspicious use of SetThreadContext

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Browser Information Discovery

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-19 04:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-19 04:56

Reported

2024-11-19 04:59

Platform

win7-20240708-en

Max time kernel

119s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

VIPKeylogger

stealer keylogger vipkeylogger

Vipkeylogger family

vipkeylogger

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\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Kernelder\nyxis.ini C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.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\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
PID 2204 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Processes

C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 142.250.180.14:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.200.3:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.200.3:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 142.250.179.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 checkip.dyndns.org udp
JP 132.226.8.169:80 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 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 crl.microsoft.com udp
GB 2.18.190.80:80 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\nsj8FE2.tmp\System.dll

MD5 75ed96254fbf894e42058062b4b4f0d1
SHA1 996503f1383b49021eb3427bc28d13b5bbd11977
SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
SHA512 58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

memory/2204-10-0x0000000004030000-0x0000000005C7F000-memory.dmp

memory/2204-12-0x0000000076DB0000-0x0000000076F59000-memory.dmp

memory/2204-11-0x0000000076DB1000-0x0000000076EB2000-memory.dmp

memory/2204-13-0x0000000004030000-0x0000000005C7F000-memory.dmp

memory/2764-14-0x0000000076DB0000-0x0000000076F59000-memory.dmp

memory/2204-15-0x0000000004030000-0x0000000005C7F000-memory.dmp

memory/2764-16-0x0000000000480000-0x00000000014E2000-memory.dmp

memory/2764-37-0x0000000000480000-0x00000000014E2000-memory.dmp

memory/2764-38-0x0000000000480000-0x00000000004C8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-19 04:56

Reported

2024-11-19 04:59

Platform

win10v2004-20241007-en

Max time kernel

143s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

VIPKeylogger

stealer keylogger vipkeylogger

Vipkeylogger family

vipkeylogger

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-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.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\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Kernelder\nyxis.ini C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Browser Information Discovery

discovery

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\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 142.250.180.14:443 drive.google.com tcp
US 8.8.8.8:53 14.180.250.142.in-addr.arpa udp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.200.3:80 c.pki.goog tcp
US 8.8.8.8:53 3.200.250.142.in-addr.arpa udp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.200.3:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 142.250.179.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 225.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
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 73.247.226.132.in-addr.arpa udp
US 8.8.8.8:53 134.177.67.172.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 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.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\nsg6EB9.tmp\System.dll

MD5 75ed96254fbf894e42058062b4b4f0d1
SHA1 996503f1383b49021eb3427bc28d13b5bbd11977
SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
SHA512 58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

memory/444-9-0x0000000004A30000-0x000000000667F000-memory.dmp

memory/444-10-0x0000000077341000-0x0000000077461000-memory.dmp

memory/444-11-0x00000000741A4000-0x00000000741A5000-memory.dmp

memory/444-12-0x0000000004A30000-0x000000000667F000-memory.dmp

memory/4552-13-0x00000000016E0000-0x000000000332F000-memory.dmp

memory/4552-14-0x00000000773C8000-0x00000000773C9000-memory.dmp

memory/4552-15-0x00000000773E5000-0x00000000773E6000-memory.dmp

memory/4552-16-0x00000000016E0000-0x000000000332F000-memory.dmp

memory/4552-29-0x0000000000480000-0x00000000016D4000-memory.dmp

memory/4552-30-0x0000000077341000-0x0000000077461000-memory.dmp

memory/4552-31-0x0000000000480000-0x00000000016D4000-memory.dmp

memory/4552-32-0x0000000000480000-0x00000000004C8000-memory.dmp

memory/4552-33-0x0000000036180000-0x0000000036724000-memory.dmp

memory/4552-34-0x0000000036730000-0x00000000367CC000-memory.dmp

memory/4552-36-0x0000000036BB0000-0x0000000036D72000-memory.dmp

memory/4552-37-0x0000000036D80000-0x0000000036DD0000-memory.dmp

memory/4552-39-0x0000000036E20000-0x0000000036EB2000-memory.dmp

memory/4552-40-0x0000000036EF0000-0x0000000036EFA000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-19 04:56

Reported

2024-11-19 04:59

Platform

win7-20240903-en

Max time kernel

119s

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 2084 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-19 04:56

Reported

2024-11-19 04:59

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

135s

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 4024 wrote to memory of 2388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4024 wrote to memory of 2388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4024 wrote to memory of 2388 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 448 -p 2388 -ip 2388

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 616

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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

N/A