Malware Analysis Report

2024-10-23 19:20

Sample ID 230705-qg8pesce63
Target stub.exe
SHA256 35b48e9472a04ef28d51e5af06dafc8d8573d22bd4159cfc5007b7321a0aa337
Tags
stealerium 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

35b48e9472a04ef28d51e5af06dafc8d8573d22bd4159cfc5007b7321a0aa337

Threat Level: Known bad

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

Malicious Activity Summary

stealerium stealer

Stealerium family

Stealerium

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Delays execution with timeout.exe

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-05 13:15

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-07-05 13:15

Reported

2023-07-05 13:17

Platform

win10v2004-20230703-en

Max time kernel

139s

Max time network

158s

Command Line

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

Signatures

Stealerium

stealer stealerium

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\stub.exe 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 use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\stub.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp2390.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 456

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

Network

Country Destination Domain Proto
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 164.113.223.173.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/456-133-0x00000000009A0000-0x0000000000B32000-memory.dmp

memory/456-134-0x00000000054E0000-0x0000000005546000-memory.dmp

memory/456-135-0x00000000054D0000-0x00000000054E0000-memory.dmp

memory/456-137-0x00000000054D0000-0x00000000054E0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp2390.tmp.bat

MD5 b5b0fa5de86c26b5f0e953a6ed275293
SHA1 6a8d6e2d51bf560511dbce57a9924861aaf8e057
SHA256 c2c3f15391251c01599300ed32800ac4780c10b65da430d1c343c5cf1ba3419c
SHA512 fe769db6faf7986fd3e2286d2da0a20f40c4ac7b32cd4968735f8c00367691a3160199c662a28710c4fb10d12e26fbec565efe704c3d4b5344dbac5cd7c0a28c

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-05 13:15

Reported

2023-07-05 13:17

Platform

win7-20230703-en

Max time kernel

28s

Max time network

32s

Command Line

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

Signatures

Stealerium

stealer stealerium

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 use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\stub.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2352 wrote to memory of 1408 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 2352 wrote to memory of 1408 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 2352 wrote to memory of 1408 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 2352 wrote to memory of 1408 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 1408 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1408 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1408 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1408 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1408 wrote to memory of 2764 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1408 wrote to memory of 2764 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1408 wrote to memory of 2764 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1408 wrote to memory of 2764 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1408 wrote to memory of 992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1408 wrote to memory of 992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1408 wrote to memory of 992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1408 wrote to memory of 992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp3766.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 2352

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

Network

N/A

Files

memory/2352-54-0x0000000000230000-0x00000000003C2000-memory.dmp

memory/2352-55-0x0000000004BA0000-0x0000000004BE0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp3766.tmp.bat

MD5 f0fcfd0d77c58b3964a023019fe217ac
SHA1 a1ce4f6f596901778c3fa4222809771bf901c263
SHA256 f0c1609f938b9911c4ed9859d79dfe7a3997001bb5453bc386af8dab53e7ad4c
SHA512 e1e66b8ff546eca25acf947106f11d66db408ee1445c0fef7c7d385eea82a8535147c9db650a8aa34f095022cd36b1571f9e33cb945ffc78bea6802b3d114c05