Malware Analysis Report

2024-08-06 12:42

Sample ID 240524-2cjqaadc3t
Target build.exe
SHA256 0651c2d33fe45643e1e6c85297fd9a361dec41567daf035f00c8bfa81e12d122
Tags
stealerium 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

0651c2d33fe45643e1e6c85297fd9a361dec41567daf035f00c8bfa81e12d122

Threat Level: Known bad

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

Malicious Activity Summary

stealerium stealer

Stealerium

Stealerium family

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Delays execution with timeout.exe

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-24 22:26

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-24 22:26

Reported

2024-05-24 22:29

Platform

win10-20240404-en

Max time kernel

135s

Max time network

136s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\build.exe

Signatures

Stealerium

stealer stealerium

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

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
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: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4880 wrote to memory of 4772 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\build.exe
PID 4880 wrote to memory of 4772 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\build.exe
PID 4880 wrote to memory of 4772 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Local\Temp\build.exe
PID 4772 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 4772 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 4772 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 2308 wrote to memory of 3260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2308 wrote to memory of 3260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2308 wrote to memory of 3260 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2308 wrote to memory of 2176 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2308 wrote to memory of 2176 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2308 wrote to memory of 2176 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2308 wrote to memory of 212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2308 wrote to memory of 212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2308 wrote to memory of 212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\build.exe

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp760B.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 4772

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 discord.com udp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 232.138.159.162.in-addr.arpa udp
US 52.111.229.48:443 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4772-0-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

memory/4772-1-0x0000000000BE0000-0x0000000000D72000-memory.dmp

memory/4772-2-0x0000000003130000-0x0000000003196000-memory.dmp

memory/4772-3-0x0000000073F80000-0x000000007466E000-memory.dmp

memory/4772-6-0x0000000005B40000-0x0000000005BD2000-memory.dmp

memory/4772-7-0x0000000005770000-0x0000000005796000-memory.dmp

memory/4772-8-0x00000000057A0000-0x00000000057A8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp760B.tmp.bat

MD5 f522e9bea46a0724a916c7203e526276
SHA1 c29cfbdb4d291191c52b6933ca2ca70b66066afe
SHA256 8a02f5165b6b302d4993a41b3177d9c81d9fbdf6650c266b789aed612afe67a9
SHA512 b498cdeafc6f382ef994a49e176a630073ad86d7a4b9eea8763eb6e6eaa58e638c253a6cb63732332355ae2101290fc42beb3dafdfffbdc0d42e748f92c09a15

memory/4772-13-0x0000000073F80000-0x000000007466E000-memory.dmp