Malware Analysis Report

2024-08-06 12:41

Sample ID 240429-ryl3esdc8x
Target build.rar
SHA256 7a39cd859927f04609e190a5af8cb802f11bc959169773c3ecfeb92db0e23bb8
Tags
stealerium collection spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7a39cd859927f04609e190a5af8cb802f11bc959169773c3ecfeb92db0e23bb8

Threat Level: Known bad

The file build.rar was found to be: Known bad.

Malicious Activity Summary

stealerium collection spyware stealer

Stealerium family

Stealerium

Reads user/profile data of web browsers

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Legitimate hosting services abused for malware hosting/C2

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

outlook_win_path

outlook_office_path

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Email Collection
T1114
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-29 14:36

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-29 14:36

Reported

2024-04-29 14:36

Platform

win10-20240404-en

Max time kernel

25s

Max time network

27s

Command Line

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

Signatures

Stealerium

stealer stealerium

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A icanhazip.com N/A N/A

Program crash

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

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\build.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\system32\msiexec.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3428 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3428 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3428 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 4160 wrote to memory of 4804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4160 wrote to memory of 4804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4160 wrote to memory of 4804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4160 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 4160 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 4160 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 4160 wrote to memory of 2892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 4160 wrote to memory of 2892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 4160 wrote to memory of 2892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 3428 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3428 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3428 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1644 wrote to memory of 1440 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1644 wrote to memory of 1440 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1644 wrote to memory of 1440 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1644 wrote to memory of 5060 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 1644 wrote to memory of 5060 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 1644 wrote to memory of 5060 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\netsh.exe

netsh wlan show profile

C:\Windows\SysWOW64\findstr.exe

findstr All

C:\Windows\system32\msiexec.exe

C:\Windows\system32\msiexec.exe /V

C:\Windows\SysWOW64\cmd.exe

"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3428 -s 3240

C:\Windows\SysWOW64\netsh.exe

netsh wlan show networks mode=bssid

Network

Country Destination Domain Proto
US 8.8.8.8:53 discord.com udp
US 162.159.136.232:443 discord.com tcp
US 8.8.8.8:53 232.136.159.162.in-addr.arpa udp
US 8.8.8.8:53 icanhazip.com udp
US 104.16.184.241:80 icanhazip.com tcp
US 8.8.8.8:53 241.184.16.104.in-addr.arpa udp
US 8.8.8.8:53 133.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 evcs-ocsp.ws.symantec.com udp
US 152.199.19.74:80 evcs-ocsp.ws.symantec.com tcp
US 8.8.8.8:53 133.191.110.104.in-addr.arpa udp
US 8.8.8.8:53 74.19.199.152.in-addr.arpa udp

Files

memory/3428-0-0x0000000000C10000-0x0000000000DA2000-memory.dmp

memory/3428-1-0x0000000073430000-0x0000000073B1E000-memory.dmp

memory/3428-2-0x00000000055C0000-0x0000000005626000-memory.dmp

memory/3428-3-0x00000000056C0000-0x00000000056D0000-memory.dmp

memory/3428-7-0x0000000005B40000-0x0000000005BD2000-memory.dmp

memory/3428-8-0x0000000005BD0000-0x0000000005BF6000-memory.dmp

memory/3428-9-0x00000000056A0000-0x00000000056A8000-memory.dmp

memory/3428-10-0x00000000056B0000-0x00000000056BA000-memory.dmp

memory/3428-11-0x0000000006AB0000-0x0000000006AB8000-memory.dmp

memory/3428-12-0x0000000006AD0000-0x0000000006AEE000-memory.dmp

C:\Users\Admin\AppData\Local\54a6b1a8256a949c1f590d727e9cd425\Admin@DFZPKZRM_en-US\Browsers\Firefox\Bookmarks.txt

MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

memory/3428-53-0x0000000007520000-0x00000000075B2000-memory.dmp

memory/3428-60-0x0000000007AC0000-0x0000000007FBE000-memory.dmp

memory/3428-87-0x0000000073430000-0x0000000073B1E000-memory.dmp

memory/3428-88-0x00000000056C0000-0x00000000056D0000-memory.dmp

C:\Users\Admin\AppData\Local\54a6b1a8256a949c1f590d727e9cd425\Admin@DFZPKZRM_en-US\System\Apps.txt

MD5 2640460603b8200f9cb24cd01275174f
SHA1 cd39498cba3d4f4742039a1091731f74db2fa9c0
SHA256 94f5ec486f4b2387c004fac0cfc5012c120cb7190c370ed09639056c10c5afcb
SHA512 e65173b4cc98aaaf92cc0e2b5446e1854a45253ab0a8e133a1c85a0cfc95beaac6842af432d61accbf9a193f1f711f6dced6a26d699ff1ee21e27ffbc74d6c62

memory/3428-114-0x0000000073430000-0x0000000073B1E000-memory.dmp