stealerium | 7b7fb709fbfa417617beda6fdceb611b51f7d4d76881a106c0edf683fd170e36

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 07:52

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General

Target

stub.exe
Size

1.6MB
MD5

02c88fe38285c217f895ff539c631fc5
SHA1

b0d560a11ce564c5272e879f321688b97561f55c
SHA256

7b7fb709fbfa417617beda6fdceb611b51f7d4d76881a106c0edf683fd170e36
SHA512

45498d421c5f13af6382a2ee54c7e2a044a25334c4186450426e52b96c21b9fb97b17d6ddb515f47c9fb19ab5dab37e7bef0cfe0f544f9bb5896ea5ea18c667e
SSDEEP

24576:v4XJi2Q9NXw2/wPOjdGxY2rJxkqjVnlqud+/2P+A+ZecdyFoBkkAqmZywr0G:ZTq24GjdGSiJxkqXfd+/9AqYanCLr

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-1-5-21-1194130065-3471212556-1656947724-1000\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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4288	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
972	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5004	stub.exe
Token: SeDebugPrivilege	972	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 2500	5004	stub.exe	86
PID 5004 wrote to memory of 2500	5004	stub.exe	86
PID 5004 wrote to memory of 2500	5004	stub.exe	86
PID 2500 wrote to memory of 4428	2500	cmd.exe	88
PID 2500 wrote to memory of 4428	2500	cmd.exe	88
PID 2500 wrote to memory of 4428	2500	cmd.exe	88
PID 2500 wrote to memory of 972	2500	cmd.exe	89
PID 2500 wrote to memory of 972	2500	cmd.exe	89
PID 2500 wrote to memory of 972	2500	cmd.exe	89
PID 2500 wrote to memory of 4288	2500	cmd.exe	90
PID 2500 wrote to memory of 4288	2500	cmd.exe	90
PID 2500 wrote to memory of 4288	2500	cmd.exe	90

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:5004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp1F99.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4428
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 5004
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:972
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4288

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\tmp1F99.tmp.bat

Filesize
57B

MD5
1e13d81860c498e5e98df78f4c1b2314

SHA1
3b432b6ffdc0ffcbcb19c902acd420aa9b009727

SHA256
39604680c64a024bd5a9eda96c765e25fb9929ad5dfe864b988b5f9b61ca26d2

SHA512
fde1d1d40213b134c6c90c87d5c6eeae737d48c461cda638cc250cb2e2a3835ee40bdbb348a332621aac91a110b9afe493b19a09ebede1844d5e483100b4a5b5

Download Submit
memory/5004-0-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/5004-1-0x00000000004E0000-0x0000000000676000-memory.dmp

Filesize
1.6MB

Download
memory/5004-2-0x0000000005030000-0x0000000005096000-memory.dmp

Filesize
408KB

Download
memory/5004-3-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/5004-6-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download