Malware Analysis Report

2024-11-15 07:58

Sample ID 241024-stbxbswdmp
Target 24102024_1524_24102024_Würth factura 4052299769.rar
SHA256 7fd2f1bdef39ce5b20a3a7dea10422bd1503f7838999f179498cee270d5f2ae4
Tags
discovery vipkeylogger keylogger stealer guloader collection downloader spyware
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

7fd2f1bdef39ce5b20a3a7dea10422bd1503f7838999f179498cee270d5f2ae4

Threat Level: Known bad

The file 24102024_1524_24102024_Würth factura 4052299769.rar was found to be: Known bad.

Malicious Activity Summary

discovery vipkeylogger keylogger stealer guloader collection downloader spyware

Guloader,Cloudeye

VIPKeylogger

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Browser Information Discovery

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-24 15:24

Signatures

Unsigned PE

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

2024-10-24 15:24

Reported

2024-10-24 15:29

Platform

win7-20240903-en

Max time kernel

118s

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 1596 -s 224

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-10-24 15:24

Reported

2024-10-24 15:29

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

273s

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 4064 wrote to memory of 1856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4064 wrote to memory of 1856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4064 wrote to memory of 1856 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 420 -p 1856 -ip 1856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
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 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 68.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-24 15:24

Reported

2024-10-24 15:29

Platform

win7-20240903-en

Max time kernel

118s

Max time network

190s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe"

Signatures

VIPKeylogger

stealer keylogger vipkeylogger

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.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\Würth factura 4052077636.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2436 set thread context of 2616 N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\rollerskater.lnk C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
File opened for modification C:\Program Files (x86)\rollerskater.lnk C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.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\Würth factura 4052077636.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe"

C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 172.217.16.238:443 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 216.58.201.97:443 drive.usercontent.google.com tcp
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 104.21.67.152:443 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

Files

\Users\Admin\AppData\Local\Temp\nsyE235.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/2436-15-0x00000000036F0000-0x00000000066C1000-memory.dmp

memory/2436-16-0x00000000773B1000-0x00000000774B2000-memory.dmp

memory/2436-17-0x00000000773B0000-0x0000000077559000-memory.dmp

memory/2436-18-0x00000000036F0000-0x00000000066C1000-memory.dmp

memory/2616-19-0x00000000773B0000-0x0000000077559000-memory.dmp

memory/2616-41-0x0000000000480000-0x00000000014E2000-memory.dmp

memory/2616-42-0x0000000000480000-0x00000000014E2000-memory.dmp

memory/2616-43-0x0000000000480000-0x00000000004C8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-24 15:24

Reported

2024-10-24 15:29

Platform

win10v2004-20241007-en

Max time kernel

292s

Max time network

203s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe"

Signatures

Guloader,Cloudeye

downloader guloader

VIPKeylogger

stealer keylogger vipkeylogger

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.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\Würth factura 4052077636.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3448 set thread context of 1152 N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\rollerskater.lnk C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
File opened for modification C:\Program Files (x86)\rollerskater.lnk C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.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\Würth factura 4052077636.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe"

C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.exe

"C:\Users\Admin\AppData\Local\Temp\Würth factura 4052077636.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 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 172.217.16.238:443 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 8.8.8.8:53 238.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 3.178.250.142.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.201.97:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 97.201.58.216.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 104.21.67.152:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 242.44.101.158.in-addr.arpa udp
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 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsqBB71.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/3448-14-0x0000000004210000-0x00000000071E1000-memory.dmp

memory/3448-15-0x0000000077DD1000-0x0000000077EF1000-memory.dmp

memory/3448-16-0x0000000010004000-0x0000000010005000-memory.dmp

memory/3448-17-0x0000000004210000-0x00000000071E1000-memory.dmp

memory/1152-18-0x00000000016E0000-0x00000000046B1000-memory.dmp

memory/1152-31-0x0000000000480000-0x00000000016D4000-memory.dmp

memory/1152-32-0x00000000016E0000-0x00000000046B1000-memory.dmp

memory/1152-33-0x0000000000480000-0x00000000016D4000-memory.dmp

memory/1152-34-0x0000000000480000-0x00000000004C8000-memory.dmp

memory/1152-35-0x00000000375E0000-0x0000000037B84000-memory.dmp

memory/1152-36-0x0000000037420000-0x00000000374BC000-memory.dmp

memory/1152-38-0x0000000038020000-0x00000000381E2000-memory.dmp

memory/1152-39-0x0000000038210000-0x0000000038260000-memory.dmp

memory/1152-41-0x00000000382F0000-0x0000000038382000-memory.dmp

memory/1152-42-0x00000000383C0000-0x00000000383CA000-memory.dmp