Malware Analysis Report

2024-12-07 14:07

Sample ID 241112-ctfbravrdn
Target 535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
SHA256 535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b
Tags
vipkeylogger discovery 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

535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b

Threat Level: Known bad

The file 535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe was found to be: Known bad.

Malicious Activity Summary

vipkeylogger discovery keylogger stealer collection spyware

VIPKeylogger

Vipkeylogger family

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Loads dropped DLL

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Unsigned PE

Browser Information Discovery

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

outlook_win_path

outlook_office_path

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 02:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 02:21

Reported

2024-11-12 02:24

Platform

win7-20240903-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

Signatures

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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe
PID 1016 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe

Processes

C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

Network

Country Destination Domain Proto
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 142.250.187.195:80 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 checkip.dyndns.org udp
US 193.122.130.0:80 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 2.19.117.22:80 crl.microsoft.com tcp

Files

\Users\Admin\AppData\Local\Temp\nsdB05C.tmp\System.dll

MD5 4add245d4ba34b04f213409bfe504c07
SHA1 ef756d6581d70e87d58cc4982e3f4d18e0ea5b09
SHA256 9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706
SHA512 1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

memory/1016-12-0x00000000774E1000-0x00000000775E2000-memory.dmp

memory/1016-13-0x00000000774E0000-0x0000000077689000-memory.dmp

memory/2716-14-0x00000000774E0000-0x0000000077689000-memory.dmp

memory/2716-15-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/2716-35-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/2716-36-0x0000000000460000-0x00000000004A8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 02:21

Reported

2024-11-12 02:24

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

Signatures

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-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.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\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe

"C:\Users\Admin\AppData\Local\Temp\535d29bedc8c720ed7daaeb5e8d79c650b21664d72bad77106eb518975be223b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.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 8.8.8.8:53 206.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.16.217.172.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 8.8.8.8:53 242.44.101.158.in-addr.arpa udp
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 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 22.236.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsbAEB0.tmp\System.dll

MD5 4add245d4ba34b04f213409bfe504c07
SHA1 ef756d6581d70e87d58cc4982e3f4d18e0ea5b09
SHA256 9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706
SHA512 1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

memory/4916-11-0x00000000772D1000-0x00000000773F1000-memory.dmp

memory/4916-12-0x0000000074135000-0x0000000074136000-memory.dmp

memory/4248-13-0x00000000772D1000-0x00000000773F1000-memory.dmp

memory/4248-14-0x0000000077358000-0x0000000077359000-memory.dmp

memory/4248-16-0x0000000077375000-0x0000000077376000-memory.dmp

memory/4248-15-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/4248-29-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/4248-30-0x00000000772D1000-0x00000000773F1000-memory.dmp

memory/4248-31-0x00000000721CE000-0x00000000721CF000-memory.dmp

memory/4248-32-0x0000000000460000-0x00000000004A8000-memory.dmp

memory/4248-33-0x00000000397C0000-0x0000000039D64000-memory.dmp

memory/4248-34-0x0000000039640000-0x00000000396DC000-memory.dmp

memory/4248-35-0x00000000721C0000-0x0000000072970000-memory.dmp

memory/4248-37-0x00000000721CE000-0x00000000721CF000-memory.dmp

memory/4248-38-0x00000000721C0000-0x0000000072970000-memory.dmp

memory/4248-39-0x000000003A1F0000-0x000000003A3B2000-memory.dmp

memory/4248-40-0x000000003A3C0000-0x000000003A410000-memory.dmp

memory/4248-42-0x000000003A440000-0x000000003A4D2000-memory.dmp

memory/4248-43-0x000000003A510000-0x000000003A51A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-12 02:21

Reported

2024-11-12 02:24

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 2096 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-12 02:21

Reported

2024-11-12 02:24

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

137s

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 2168 wrote to memory of 4068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2168 wrote to memory of 4068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2168 wrote to memory of 4068 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 4068 -ip 4068

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 612

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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

N/A