Malware Analysis Report

2024-08-06 12:41

Sample ID 240524-2bpvxadb9w
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: behavioral2

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 family

Stealerium

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

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
Query Registry
T1012
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 22:24

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 22:24

Reported

2024-05-24 22:27

Platform

win7-20240508-en

Max time kernel

117s

Max time network

117s

Command Line

"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 1708 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1708 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1708 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1708 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 2552 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2552 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2552 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2552 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2552 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2552 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2552 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2552 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2552 wrote to memory of 288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2552 wrote to memory of 288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2552 wrote to memory of 288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2552 wrote to memory of 288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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\tmp461D.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 1708

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 discord.com udp
US 162.159.138.232:443 discord.com tcp

Files

memory/1708-0-0x000000007476E000-0x000000007476F000-memory.dmp

memory/1708-1-0x0000000000A90000-0x0000000000C22000-memory.dmp

memory/1708-2-0x0000000074760000-0x0000000074E4E000-memory.dmp

memory/1708-5-0x0000000005220000-0x00000000052B2000-memory.dmp

memory/1708-6-0x00000000004C0000-0x00000000004E6000-memory.dmp

memory/1708-7-0x0000000000500000-0x0000000000508000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab44DF.tmp

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

C:\Users\Admin\AppData\Local\Temp\Tar44F1.tmp

MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

C:\Users\Admin\AppData\Local\Temp\tmp461D.tmp.bat

MD5 24fc638af1f00705ff6262fcf4240026
SHA1 ea7b137ad8bf69f8f335b01a7f4723f6cf372921
SHA256 62a0627067118669fa799408292326cf7e0e32ac686fa7c3208c7905bfb22616
SHA512 d1a31af9d7ae3dcff9146eff58e688b1c784748d34ee5fdb9cd69825cac00f063bd79cda56a6c88db43d7769107acd24c3e454d42a2334fb20d4c085754fd394

memory/1708-46-0x0000000074760000-0x0000000074E4E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-24 22:24

Reported

2024-05-24 22:27

Platform

win10v2004-20240508-en

Max time kernel

129s

Max time network

98s

Command Line

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

Signatures

Stealerium

stealer stealerium

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation 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

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 4536 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 4536 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 4536 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 2928 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2928 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2928 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 2928 wrote to memory of 400 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2928 wrote to memory of 400 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2928 wrote to memory of 400 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2928 wrote to memory of 3008 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2928 wrote to memory of 3008 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2928 wrote to memory of 3008 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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\tmp5A16.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 4536

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 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 233.128.159.162.in-addr.arpa udp
US 8.8.8.8:53 203.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp

Files

memory/4536-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

memory/4536-1-0x00000000000A0000-0x0000000000232000-memory.dmp

memory/4536-2-0x0000000004BC0000-0x0000000004C26000-memory.dmp

memory/4536-3-0x00000000749D0000-0x0000000075180000-memory.dmp

memory/4536-6-0x0000000005160000-0x00000000051F2000-memory.dmp

memory/4536-7-0x00000000051F0000-0x0000000005216000-memory.dmp

memory/4536-8-0x0000000004FD0000-0x0000000004FD8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp5A16.tmp.bat

MD5 27a6f6845dd6f2b029eb939eefa0e878
SHA1 7ae2be02a80d6ab63b28b0a0791283748745f437
SHA256 f04af442e8ed29a7ea8233eba5483af5adbaf9b20dcf7e1bf28d40ebb3441633
SHA512 cd9ba16485152173006c619b687a8621e2422427c5412c613f92474079499f2bc71e08cb6658e55e32156a202b0bb45ee30b265a7bd192fb6443dc8a953c8919

memory/4536-13-0x00000000749D0000-0x0000000075180000-memory.dmp