stealerium | 6c5935bcddaa1d4f809487f66db758e892cc0a7fd7704d138904bc879644ea1f

Analysis

max time kernel
95s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 04:56

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General

Target

stub.exe
Size

1.6MB
MD5

6627adf7167ee571e8fd6c8b1a0e8ae3
SHA1

03b9112660ee73c59d84e219f15bf24ae9df48db
SHA256

6c5935bcddaa1d4f809487f66db758e892cc0a7fd7704d138904bc879644ea1f
SHA512

e05896a6e0d09d4dafeb2467395ca06ae1e728a4aa079041dea82940caeb71646984604fdeea482748423b10257b8462db4f573682f9f719939143fdb5691c60
SSDEEP

49152:19Tq24GjdGSiqkqXfd+/9AqYanieKd0U:1YEjdGSiqkqXf0FLYW

Score

10^/10

stealerium discovery stealer

Malware Config

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	stub.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4048	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4980	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3752	stub.exe
Token: SeDebugPrivilege	4980	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 4616	3752	stub.exe	89
PID 3752 wrote to memory of 4616	3752	stub.exe	89
PID 3752 wrote to memory of 4616	3752	stub.exe	89
PID 4616 wrote to memory of 2604	4616	cmd.exe	91
PID 4616 wrote to memory of 2604	4616	cmd.exe	91
PID 4616 wrote to memory of 2604	4616	cmd.exe	91
PID 4616 wrote to memory of 4980	4616	cmd.exe	92
PID 4616 wrote to memory of 4980	4616	cmd.exe	92
PID 4616 wrote to memory of 4980	4616	cmd.exe	92
PID 4616 wrote to memory of 4048	4616	cmd.exe	93
PID 4616 wrote to memory of 4048	4616	cmd.exe	93
PID 4616 wrote to memory of 4048	4616	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp402.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2604
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 3752
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4980
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp402.tmp.bat

Filesize
57B

MD5
48cfe00dce2d5416651b2468a07a889f

SHA1
81d88bff0667e5661a6d0c13ff10cc59954b8e8e

SHA256
575c68c7d06d1b68e21b2957ecc979089520fcff26e2311c0e88b017219899b0

SHA512
6e49973d8867e9a2c732f7d608faec557647e3d14781ed3fb29be975154c05a101b13e40e6831766d38c4c8123761c7608bfb291fff519fd30b1608505cadf01

Download Submit
memory/3752-0-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/3752-1-0x0000000000DD0000-0x0000000000F62000-memory.dmp

Filesize
1.6MB

Download
memory/3752-2-0x00000000058F0000-0x0000000005956000-memory.dmp

Filesize
408KB

Download
memory/3752-3-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3752-6-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download