Malware Analysis Report

2024-08-06 12:39

Sample ID 240629-sjzkmsshnl
Target stub.exe
SHA256 d909f5519de499c7329a54e007ec94cf45d304e9fb17daaf7ee3cdf43675691c
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

d909f5519de499c7329a54e007ec94cf45d304e9fb17daaf7ee3cdf43675691c

Threat Level: Known bad

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

Malicious Activity Summary

stealerium stealer

Stealerium

Stealerium family

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

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
Discovery
TA0007
Query Registry
T1012
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

2024-06-29 15:09

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 15:09

Reported

2024-06-29 15:12

Platform

win10v2004-20240508-en

Max time kernel

125s

Max time network

126s

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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\stub.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\stub.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\stub.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 2616 wrote to memory of 1804 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 2616 wrote to memory of 1804 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 2616 wrote to memory of 1804 N/A C:\Users\Admin\AppData\Local\Temp\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 1804 wrote to memory of 3396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1804 wrote to memory of 3396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1804 wrote to memory of 3396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1804 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1804 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1804 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1804 wrote to memory of 4680 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1804 wrote to memory of 4680 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1804 wrote to memory of 4680 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:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4200,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4004 /prefetch:8

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp1D37.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 2616

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 232.137.159.162.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 131.72.42.20.in-addr.arpa udp

Files

memory/2616-0-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

memory/2616-1-0x0000000000760000-0x00000000008F6000-memory.dmp

memory/2616-2-0x0000000005270000-0x00000000052D6000-memory.dmp

memory/2616-3-0x0000000074A10000-0x00000000751C0000-memory.dmp

memory/2616-7-0x00000000058F0000-0x0000000005982000-memory.dmp

memory/2616-8-0x0000000005980000-0x00000000059A6000-memory.dmp

memory/2616-9-0x00000000059D0000-0x00000000059D8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp1D37.tmp.bat

MD5 083c6fdce55536ba4f3165735e306729
SHA1 c428d7903394f51523d31e0cd453e2373e7a8caf
SHA256 c4453f0f4828ef4ff94cca8a2c50f6453db50e7c3b6477d13db03cc689aa2ef8
SHA512 3fb8f1b3181448c34b16cca85f70b56cd91a0592d7e92e373597872d47ec3226adef0841df8cc4342c67d74d00dc6737294769899f8f91e5827db8009d0d869f

memory/2616-14-0x0000000074A10000-0x00000000751C0000-memory.dmp