Malware Analysis Report

2024-10-19 06:42

Sample ID 231014-evp9fsab52
Target sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe
SHA256 c1cae9e0a93114e0c9ce011279c41cf0f56d59edcaa4e2ea3c3066a2c0bb76ac
Tags
gurcu collection discovery spyware stealer
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 Overview

score
10/10

SHA256

c1cae9e0a93114e0c9ce011279c41cf0f56d59edcaa4e2ea3c3066a2c0bb76ac

Threat Level: Known bad

The file sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe was found to be: Known bad.

Malicious Activity Summary

gurcu collection discovery spyware stealer

Detect Gurcu Stealer V3 payload

Gurcu, WhiteSnake

Gurcu family

Reads user/profile data of web browsers

Accesses Microsoft Outlook profiles

Checks installed software on the system

Looks up external IP address via web service

Unsigned PE

outlook_office_path

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-14 04:15

Signatures

Detect Gurcu Stealer V3 payload

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

Gurcu family

gurcu

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-14 04:15

Reported

2023-10-14 19:59

Platform

win7-20230831-en

Max time kernel

152s

Max time network

158s

Command Line

"C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe"

Signatures

Detect Gurcu Stealer V3 payload

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

Gurcu, WhiteSnake

stealer gurcu

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe

"C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
DE 172.104.152.202:8080 tcp
DE 116.202.101.219:8080 116.202.101.219 tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp
NL 149.154.167.220:443 api.telegram.org tcp
DE 172.104.152.202:8080 tcp

Files

memory/2880-0-0x0000000000E80000-0x0000000000E9C000-memory.dmp

memory/2880-1-0x000007FEF5050000-0x000007FEF5A3C000-memory.dmp

memory/2880-2-0x000000001B150000-0x000000001B1D0000-memory.dmp

memory/2880-3-0x000007FEF5050000-0x000007FEF5A3C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-14 04:15

Reported

2023-10-14 19:59

Platform

win10v2004-20230915-en

Max time kernel

155s

Max time network

165s

Command Line

"C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe"

Signatures

Detect Gurcu Stealer V3 payload

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

Gurcu, WhiteSnake

stealer gurcu

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe

"C:\Users\Admin\AppData\Local\Temp\sdd4f38eb14d22bb3b0d3b9178295b1142f83.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 120.208.253.8.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
DE 116.202.101.219:8080 116.202.101.219 tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 219.101.202.116.in-addr.arpa udp
US 8.8.8.8:53 126.21.238.8.in-addr.arpa udp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
DE 172.104.152.202:8080 tcp
DE 172.104.152.202:8080 tcp

Files

memory/4936-0-0x000001EC7FEE0000-0x000001EC7FEFC000-memory.dmp

memory/4936-1-0x00007FFDEEFE0000-0x00007FFDEFAA1000-memory.dmp

memory/4936-2-0x000001EC1A7C0000-0x000001EC1A7D0000-memory.dmp

memory/4936-3-0x00007FFDEEFE0000-0x00007FFDEFAA1000-memory.dmp

memory/4936-4-0x000001EC1A7C0000-0x000001EC1A7D0000-memory.dmp