Malware Analysis Report

2024-10-19 06:42

Sample ID 231014-bnd13ahd7v
Target t40bd50ace847a114b83265af91b7.exe
SHA256 7b2dea7a8eff410159459e3f89c5e4fa81f8b9d2f6ce02cfaf8e307f3adf9f85
Tags
gurcu collection 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

7b2dea7a8eff410159459e3f89c5e4fa81f8b9d2f6ce02cfaf8e307f3adf9f85

Threat Level: Known bad

The file t40bd50ace847a114b83265af91b7.exe was found to be: Known bad.

Malicious Activity Summary

gurcu collection spyware stealer

Gurcu, WhiteSnake

Gurcu family

Reads user/profile data of web browsers

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Unsigned PE

Modifies system certificate store

Suspicious use of AdjustPrivilegeToken

outlook_win_path

Suspicious behavior: EnumeratesProcesses

outlook_office_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-14 01:17

Signatures

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 01:17

Reported

2023-10-14 14:23

Platform

win7-20230831-en

Max time kernel

24s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe"

Signatures

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-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

Looks up external IP address via web service

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

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe

"C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 blockchain.com udp
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 pornhub.com udp
US 8.8.8.8:53 openai.com udp
US 8.8.8.8:53 youtube.com udp
US 8.8.8.8:53 blockchain.com udp
US 8.8.8.8:53 youtube.com udp
NL 142.250.179.142:80 google.com tcp
NL 142.250.179.142:80 google.com tcp
US 66.254.114.41:80 pornhub.com tcp
US 13.107.246.67:80 openai.com tcp
US 104.16.29.98:80 blockchain.com tcp
US 104.16.29.98:80 blockchain.com tcp
US 208.95.112.1:80 ip-api.com tcp
NL 216.58.214.14:80 youtube.com tcp
NL 216.58.214.14:80 youtube.com tcp
US 66.254.114.41:443 pornhub.com tcp
US 8.8.8.8:53 www.blockchain.com udp
US 8.8.8.8:53 www.blockchain.com udp
US 13.107.246.67:443 openai.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 8.8.8.8:53 www.pornhub.com udp
US 104.16.29.98:443 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp
US 66.254.114.41:443 www.pornhub.com tcp
NL 154.61.71.13:80 tcp
NL 142.250.179.142:80 google.com tcp
NL 142.250.179.142:80 google.com tcp

Files

memory/2192-0-0x00000000000B0000-0x0000000000104000-memory.dmp

memory/2192-1-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

memory/2192-2-0x000000001B3A0000-0x000000001B420000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab8AC4.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

C:\Users\Admin\AppData\Local\Temp\Tar8B63.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-14 01:17

Reported

2023-10-14 14:22

Platform

win10v2004-20230915-en

Max time kernel

2s

Max time network

116s

Command Line

"C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe"

Signatures

Gurcu, WhiteSnake

stealer gurcu

Reads user/profile data of web browsers

spyware stealer

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe

"C:\Users\Admin\AppData\Local\Temp\t40bd50ace847a114b83265af91b7.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 eset.com udp
US 8.8.8.8:53 blockchain.com udp
US 8.8.8.8:53 youtube.com udp
US 8.8.8.8:53 google.com udp
NL 216.58.214.14:80 youtube.com tcp
NL 142.250.179.142:80 google.com tcp
SK 91.228.166.47:80 eset.com tcp
US 104.16.29.98:80 blockchain.com tcp
NL 216.58.214.14:80 youtube.com tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 github.com udp
US 140.82.114.3:80 github.com tcp
US 8.8.8.8:53 www.blockchain.com udp
US 8.8.8.8:53 www.eset.com udp
US 104.16.29.98:80 www.blockchain.com tcp
US 104.16.29.98:443 www.blockchain.com tcp

Files

memory/3048-0-0x0000013B13640000-0x0000013B13694000-memory.dmp

memory/3048-1-0x00007FFB7BB30000-0x00007FFB7C5F1000-memory.dmp

memory/3048-2-0x0000013B15440000-0x0000013B15450000-memory.dmp