Malware Analysis Report

2025-05-28 18:51

Sample ID 250111-ffrdmsvlay
Target ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
SHA256 ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f
Tags
discovery guloader 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: 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f

Threat Level: Known bad

The file ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader evasion spyware stealer collection

Guloader,Cloudeye

Guloader family

Disables Task Manager via registry modification

Reads user/profile data of local email clients

Reads user/profile data of web browsers

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 NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Drops file in System32 directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

outlook_office_path

outlook_win_path

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-11 04:49

Signatures

Unsigned PE

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

Analysis: behavioral4

Detonation Overview

Submitted

2025-01-11 04:49

Reported

2025-01-11 04:51

Platform

win10v2004-20241007-en

Max time kernel

149s

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 4144 wrote to memory of 1732 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4144 wrote to memory of 1732 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4144 wrote to memory of 1732 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 1732 -ip 1732

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-11 04:49

Reported

2025-01-11 04:51

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.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
N/A reallyfreegeoip.org N/A N/A
N/A reallyfreegeoip.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\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.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\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe
PID 2344 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"

C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 142.250.179.238:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.200.35:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.200.35:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.212.225:443 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 104.21.64.1:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 crl.microsoft.com udp
DE 2.19.126.146:80 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\nstCC74.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/2344-16-0x0000000002D20000-0x00000000053CA000-memory.dmp

memory/2344-17-0x0000000077041000-0x0000000077142000-memory.dmp

memory/2344-18-0x0000000077040000-0x00000000771E9000-memory.dmp

memory/1740-20-0x0000000077040000-0x00000000771E9000-memory.dmp

memory/2344-19-0x0000000002D20000-0x00000000053CA000-memory.dmp

memory/2344-21-0x0000000002D20000-0x00000000053CA000-memory.dmp

memory/1740-41-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/1740-42-0x0000000000460000-0x00000000014C2000-memory.dmp

memory/1740-43-0x0000000000460000-0x000000000047E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-11 04:49

Reported

2025-01-11 04:51

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.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 reallyfreegeoip.org N/A N/A
N/A checkip.dyndns.org N/A N/A
N/A reallyfreegeoip.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\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.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\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"

C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe

"C:\Users\Admin\AppData\Local\Temp\ad084a1c285369520a48712abaef5ebb566572f32e345d7e2356ada3fea0473f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.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
GB 142.250.179.238:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.200.35:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.200.35:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.212.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.212.58.216.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.80.1:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 168.6.122.193.in-addr.arpa udp
US 8.8.8.8:53 1.80.21.104.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsw9701.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/2376-14-0x0000000002A60000-0x000000000510A000-memory.dmp

memory/2376-15-0x0000000077751000-0x0000000077871000-memory.dmp

memory/2376-16-0x0000000010004000-0x0000000010005000-memory.dmp

memory/2376-17-0x0000000002A60000-0x000000000510A000-memory.dmp

memory/1380-18-0x00000000016C0000-0x0000000003D6A000-memory.dmp

memory/1380-31-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/1380-32-0x0000000000460000-0x00000000016B4000-memory.dmp

memory/1380-33-0x00000000016C0000-0x0000000003D6A000-memory.dmp

memory/1380-34-0x0000000000460000-0x000000000047E000-memory.dmp

memory/1380-35-0x0000000036A00000-0x0000000036FA4000-memory.dmp

memory/1380-36-0x0000000036FB0000-0x000000003704C000-memory.dmp

memory/1380-37-0x0000000037440000-0x00000000374D2000-memory.dmp

memory/1380-38-0x00000000374E0000-0x0000000037530000-memory.dmp

memory/1380-39-0x0000000037650000-0x0000000037812000-memory.dmp

memory/1380-40-0x00000000378D0000-0x00000000378DA000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2025-01-11 04:49

Reported

2025-01-11 04:51

Platform

win7-20241010-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 2880 -s 224

Network

N/A

Files

N/A