Malware Analysis Report

2024-10-23 19:17

Sample ID 230528-b6bnnaec6z
Target a1ce7b26712e1db177d86fa87d09c354.bin
SHA256 61bca95b6a024da3cc6ac31c4e24d470d9750a6838cf285136ba7a70f9be847e
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: 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

61bca95b6a024da3cc6ac31c4e24d470d9750a6838cf285136ba7a70f9be847e

Threat Level: Known bad

The file a1ce7b26712e1db177d86fa87d09c354.bin 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

Suspicious use of AdjustPrivilegeToken

outlook_office_path

Suspicious behavior: EnumeratesProcesses

outlook_win_path

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-05-28 01:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-05-28 01:44

Reported

2023-05-28 01:47

Platform

win7-20230220-en

Max time kernel

46s

Max time network

34s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1284 wrote to memory of 1096 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 1096 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 1096 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 1096 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 268 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 1284 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

Network

N/A

Files

memory/1284-54-0x0000000000350000-0x0000000000426000-memory.dmp

memory/1284-55-0x0000000004A10000-0x0000000004A50000-memory.dmp

memory/1284-56-0x00000000004D0000-0x00000000004E0000-memory.dmp

memory/1284-57-0x0000000004A10000-0x0000000004A50000-memory.dmp

memory/1284-58-0x00000000004E0000-0x00000000004EA000-memory.dmp

memory/1284-59-0x0000000007F60000-0x0000000007FF0000-memory.dmp

memory/1284-60-0x00000000044B0000-0x000000000450C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-28 01:44

Reported

2023-05-28 01:47

Platform

win10v2004-20230220-en

Max time kernel

59s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe
PID 3384 wrote to memory of 5056 N/A C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe

"C:\Users\Admin\AppData\Local\Temp\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5056 -ip 5056

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5056 -s 1864

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 126.179.238.8.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 52.152.108.96:443 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
FR 40.79.141.154:443 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 233.141.123.20.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp

Files

memory/3384-133-0x0000000000FA0000-0x0000000001076000-memory.dmp

memory/3384-134-0x0000000005FC0000-0x0000000006564000-memory.dmp

memory/3384-135-0x0000000005910000-0x00000000059A2000-memory.dmp

memory/3384-136-0x00000000059D0000-0x00000000059DA000-memory.dmp

memory/3384-137-0x0000000005BC0000-0x0000000005BD0000-memory.dmp

memory/3384-138-0x0000000005BC0000-0x0000000005BD0000-memory.dmp

memory/3384-139-0x0000000009920000-0x00000000099BC000-memory.dmp

memory/5056-140-0x0000000000400000-0x000000000045A000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e.exe.log

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

memory/5056-143-0x0000000005360000-0x0000000005370000-memory.dmp