Malware Analysis Report

2024-10-23 19:16

Sample ID 230630-n84hnsaa35
Target 1232.exe
SHA256 b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e
Tags
gurcu collection spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e

Threat Level: Known bad

The file 1232.exe was found to be: Known bad.

Malicious Activity Summary

gurcu collection spyware stealer

Gurcu, WhiteSnake

Reads user/profile data of web browsers

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Unsigned PE

Program crash

outlook_win_path

Suspicious use of AdjustPrivilegeToken

outlook_office_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-06-30 12:04

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-06-30 12:04

Reported

2023-06-30 12:11

Platform

win10v2004-20230621-en

Max time kernel

134s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1232.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-1-5-21-508929744-1894537824-211734425-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-508929744-1894537824-211734425-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-508929744-1894537824-211734425-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2112 set thread context of 4144 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\1232.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-508929744-1894537824-211734425-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-508929744-1894537824-211734425-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1232.exe

"C:\Users\Admin\AppData\Local\Temp\1232.exe"

C:\Users\Admin\AppData\Local\Temp\1232.exe

"C:\Users\Admin\AppData\Local\Temp\1232.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4144 -ip 4144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4144 -s 2712

Network

Country Destination Domain Proto
NL 8.238.177.126:80 tcp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 20.42.65.89:443 tcp
NL 8.238.177.126:80 tcp
NL 8.238.177.126:80 tcp
NL 8.238.177.126:80 tcp
GB 96.16.110.41:443 tcp
US 8.8.8.8:53 73.254.224.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 51.15.97.104.in-addr.arpa udp

Files

memory/2112-133-0x0000000000E50000-0x0000000000F26000-memory.dmp

memory/2112-134-0x0000000005EA0000-0x0000000006444000-memory.dmp

memory/2112-135-0x00000000058F0000-0x0000000005982000-memory.dmp

memory/2112-136-0x0000000005E40000-0x0000000005E4A000-memory.dmp

memory/2112-137-0x0000000005880000-0x0000000005890000-memory.dmp

memory/2112-138-0x0000000005880000-0x0000000005890000-memory.dmp

memory/2112-139-0x00000000098E0000-0x000000000997C000-memory.dmp

memory/4144-140-0x0000000000400000-0x000000000045A000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1232.exe.log

MD5 7cad59aef5a93f093b6ba494f13f796f
SHA1 3cef97b77939bfc06dfd3946fc1a8cd159f67100
SHA256 1e1b444fe2d8772f6709b22b94bb5b0aa7fa590f6a693705d9bf1f2f71267a55
SHA512 8cedd03efec34c6226a01fd6b4831a689be16545ea6b849cd96f775e0722bfefd4b47f3dd8401d2080d341d4319f75995ece60de44352a1f86a2e5dc01e6210b

memory/4144-143-0x0000000005260000-0x0000000005270000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-06-30 12:04

Reported

2023-06-30 12:11

Platform

win7-20230621-en

Max time kernel

63s

Max time network

52s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1232.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-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1148 set thread context of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\1232.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1148 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1148 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Users\Admin\AppData\Local\Temp\1232.exe
PID 1860 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Windows\SysWOW64\WerFault.exe
PID 1860 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Windows\SysWOW64\WerFault.exe
PID 1860 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Windows\SysWOW64\WerFault.exe
PID 1860 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\1232.exe C:\Windows\SysWOW64\WerFault.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\1232.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1232.exe

"C:\Users\Admin\AppData\Local\Temp\1232.exe"

C:\Users\Admin\AppData\Local\Temp\1232.exe

"C:\Users\Admin\AppData\Local\Temp\1232.exe"

C:\Users\Admin\AppData\Local\Temp\1232.exe

"C:\Users\Admin\AppData\Local\Temp\1232.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 2392

Network

N/A

Files

memory/1148-54-0x0000000000120000-0x00000000001F6000-memory.dmp

memory/1148-55-0x0000000004B10000-0x0000000004B50000-memory.dmp

memory/1148-56-0x00000000006B0000-0x00000000006C0000-memory.dmp

memory/1148-57-0x0000000004B10000-0x0000000004B50000-memory.dmp

memory/1148-58-0x0000000000730000-0x000000000073A000-memory.dmp

memory/1148-59-0x0000000005D20000-0x0000000005DB0000-memory.dmp

memory/1148-60-0x0000000002080000-0x00000000020DC000-memory.dmp

memory/1860-61-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-62-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-63-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-64-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-66-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1860-70-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-68-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1860-71-0x0000000004A20000-0x0000000004A60000-memory.dmp

memory/1860-72-0x0000000004A20000-0x0000000004A60000-memory.dmp