stealerium | 52bd450723364176402cba89d3618f122c4106d6d4bd8f0eb183c098daa5f14a

Analysis

max time kernel
148s
max time network
150s
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 13:16

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General

Target

Stub/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-1-5-21-523280732-2327480845-3730041215-1000\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	taskkill.exe
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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2468	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4732	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	stub.exe
Token: SeDebugPrivilege	4732	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 3116	1784	stub.exe	85
PID 1784 wrote to memory of 3116	1784	stub.exe	85
PID 1784 wrote to memory of 3116	1784	stub.exe	85
PID 3116 wrote to memory of 3436	3116	cmd.exe	87
PID 3116 wrote to memory of 3436	3116	cmd.exe	87
PID 3116 wrote to memory of 3436	3116	cmd.exe	87
PID 3116 wrote to memory of 4732	3116	cmd.exe	88
PID 3116 wrote to memory of 4732	3116	cmd.exe	88
PID 3116 wrote to memory of 4732	3116	cmd.exe	88
PID 3116 wrote to memory of 2468	3116	cmd.exe	89
PID 3116 wrote to memory of 2468	3116	cmd.exe	89
PID 3116 wrote to memory of 2468	3116	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\Stub\stub.exe
"C:\Users\Admin\AppData\Local\Temp\Stub\stub.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp91C0.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3436
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 1784
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4732
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2468

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp91C0.tmp.bat

Filesize
57B

MD5
1b8286f603005dc222d3fc21e3825132

SHA1
282e553b35f38413aadf1e0e0bbfc3c58c68ba13

SHA256
0cf115877cf6ee03310f21675000269dc1518f0dece8e00da7f4b8ab08d0a10e

SHA512
9b66541297252c122483f5d941b90aa16e616d872d035f5b40d6ee34a45798b649bffca4ed85ec80e54b0d36f2cf0751963855bbe837b011d4e698ec6ec1916e

Download Submit
memory/1784-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/1784-1-0x0000000000F80000-0x0000000001116000-memory.dmp

Filesize
1.6MB

Download
memory/1784-2-0x00000000059A0000-0x0000000005A06000-memory.dmp

Filesize
408KB

Download
memory/1784-3-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/1784-6-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download