Malware Analysis Report

2024-08-06 12:51

Sample ID 240630-w9ql7ssdkg
Target Stealerium.zip
SHA256 49d8c623abc37dff7af7d7ea15fa66b27504f166b5bf7a2d486c41ce7923a722
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: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral8

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral7

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral9

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral10

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

49d8c623abc37dff7af7d7ea15fa66b27504f166b5bf7a2d486c41ce7923a722

Threat Level: Known bad

The file Stealerium.zip was found to be: Known bad.

Malicious Activity Summary

stealerium stealer

Stealerium family

Stealerium

Enumerates physical storage devices

Unsigned PE

Delays execution with timeout.exe

Kills process with taskkill

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
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-30 18:37

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

456s

Max time network

458s

Command Line

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

Signatures

N/A

Processes

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

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

Network

Country Destination Domain Proto
IE 52.111.236.22:443 tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

457s

Max time network

462s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Pdb.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Pdb.dll,#1

Network

Country Destination Domain Proto
US 52.111.227.13:443 tcp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

454s

Max time network

489s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Rocks.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Rocks.dll,#1

Network

Country Destination Domain Proto
US 52.111.227.13:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral6

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

453s

Max time network

485s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral8

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240508-en

Max time kernel

455s

Max time network

495s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Spectre.Console.ImageSharp.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Spectre.Console.ImageSharp.dll,#1

Network

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240508-en

Max time kernel

500s

Max time network

509s

Command Line

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

Signatures

N/A

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/2088-0-0x00007FFD12BDB000-0x00007FFD12BDC000-memory.dmp

memory/2088-1-0x00007FFD12BDB000-0x00007FFD12BDC000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

453s

Max time network

455s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Mdb.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Mono.Cecil.Mdb.dll,#1

Network

Files

N/A

Analysis: behavioral7

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240611-en

Max time kernel

455s

Max time network

459s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\SixLabors.ImageSharp.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\SixLabors.ImageSharp.dll,#1

Network

Files

N/A

Analysis: behavioral9

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240508-en

Max time kernel

450s

Max time network

493s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Spectre.Console.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Spectre.Console.dll,#1

Network

Country Destination Domain Proto
US 52.111.229.43:443 tcp

Files

N/A

Analysis: behavioral10

Detonation Overview

Submitted

2024-06-30 18:37

Reported

2024-06-30 18:56

Platform

win11-20240508-en

Max time kernel

560s

Max time network

569s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Stub\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\stub.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1056 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\Stub\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 1056 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\Stub\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 1056 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\Stub\stub.exe C:\Windows\SysWOW64\cmd.exe
PID 5100 wrote to memory of 2524 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 5100 wrote to memory of 2524 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 5100 wrote to memory of 2524 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 5100 wrote to memory of 3484 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 5100 wrote to memory of 3484 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 5100 wrote to memory of 3484 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 5100 wrote to memory of 2448 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 5100 wrote to memory of 2448 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 5100 wrote to memory of 2448 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7B98.tmp.bat

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\taskkill.exe

TaskKill /F /IM 1056

C:\Windows\SysWOW64\timeout.exe

Timeout /T 2 /Nobreak

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/1056-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

memory/1056-1-0x0000000000B30000-0x0000000000CC2000-memory.dmp

memory/1056-2-0x0000000005720000-0x0000000005786000-memory.dmp

memory/1056-3-0x0000000074DE0000-0x0000000075591000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp7B98.tmp.bat

MD5 88f7793d83cef52cd3fc9bb4397f02f4
SHA1 7b247742b2533d2f857665581a9b8fe88c59acdf
SHA256 0df40d47d8775ceaf3e63a908a25a4d9b2d04201d1cb1e8c9796450b3fb92c02
SHA512 de97e6aaa5e27c92bf4fd65e1a57cb1e755c8a4988b9c6445ae9f22a4b2ca3da035198d97af384f9c70a413f37073ea11245626857d3d852e431a5411311cca0

memory/1056-6-0x0000000074DE0000-0x0000000075591000-memory.dmp