stealc | 248f3ab29df29dc1c5b24ab0ef2105085e52e9bb4a1c3a7e8220f319038fb4cb

Analysis

max time kernel
149s
max time network
5s
platform
windows11-21h2_x64
resource
win11-20260126-en
resource tags

arch:x64arch:x86image:win11-20260126-enlocale:en-usos:windows11-21h2-x64system
submitted
27/01/2026, 02:12

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General

Target
FixBoostrapppe.exe
Size 4.5MB
Sample260127-cm8pqaaw6c
SHA256 248f3ab29df29dc1c5b24ab0ef2105085e52e9bb4a1c3a7e8220f319038fb4cb
MD5 3069967b1224133c2128c1cf2f1b4ee6
SHA1 2d02d8040db08cf0d1d8f40089b82bf5ab0d26b1
SHA512 b22e5a683416be647ccdfd3463ccd4b4a41607a56c04ff02dd5b99055bd6ca336159cce359e8390115c2745cc26731353cb0af11df22d87666ba2515096ed2f3
SSDEEP 49152:EoH2Hi1QbaHzQWKbzUxNyCFLpm9NHvdecNhNGQOu9yoKyKZtM:E5LS3LsvdhYxM
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

1 discovery stealc spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

http://138.226.237.6

Attributes

url_path
/77c5d4e819884f82.php

rc4.plain

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	FixBoostrapppe.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	FixBoostrapppe.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4756	FixBoostrapppe.exe
4756	FixBoostrapppe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 2320	4756	FixBoostrapppe.exe	77
PID 4756 wrote to memory of 2320	4756	FixBoostrapppe.exe	77
PID 4756 wrote to memory of 4996	4756	FixBoostrapppe.exe	80
PID 4756 wrote to memory of 4996	4756	FixBoostrapppe.exe	80

C:\Users\Admin\AppData\Local\Temp\FixBoostrapppe.exe
"C:\Users\Admin\AppData\Local\Temp\FixBoostrapppe.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe"
  2⤵
  PID:2320
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:4996

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:3192

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:4952

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:4148

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

A4121CAA-03FD-CD8E-C952-35F6417AEDDE.txt

Path C:\ProgramData\A4121CAA-03FD-CD8E-C952-35F6417AEDDE.txt
Size 64B
SHA256 3d24b37a78a4a696c3aa1be4fdd0c88b55a314ebeac4498864d42b577109d931
MD5 27f863b99b5c15b8476d773759b63cdd
SHA1 364f2e9bba8a799ab7cb783fec057d91987dcd6a
SHA512 df892d967fe3dca781b19b2deab1b8310c88ad949131e7106b6d11bacf9f95c892885893d78d8e205feb44c471963d6ddf2de7577f83d3e83e008f51e14f7ffd
TLSH
T1CBA002A06A5D0551A81C2B3A06E5D7110416C88FC15BC7D8654067332513EB9E0800A5
MD5 SHA1 SHA512 TLSH

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A4121CAA-03FD-CD8E-C952-35F6417AEDDE.txt

Path C:\ProgramData\A4121CAA-03FD-CD8E-C952-35F6417AEDDE.txt
Size 64B
SHA256 ee905776e0567c124c91b5a69c0454db3c0eae1d4ee9d00a176453b9f08c2d7c
MD5 fa8aea1aa7e5d8826cb4ac42bfb1272c
SHA1 5605ee0c3fc677a940b7c0bbbebf4538e9008fe1
SHA512 150c74730ad3a1d20b6c43c9ae3e6885416ff195b99501f93ec6c0f2930741e562c62cf3a1816f3642230ebeeee7e20fab206b742e67c23a5cf380f8fafaacc0
TLSH
T164A002E9D602AA4C9944817B4E463898C754C5059113E89AA951952471F64B0D185648
MD5 SHA1 SHA512 TLSH

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memory/4756-3-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-1-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-10-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-9-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-6-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-5-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-2-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-11-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-0-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-8-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-7-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-12-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-16-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-13-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-33-0x0000000140000000-0x00000001400CC000-memory.dmp

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memory/4756-34-0x0000000140000000-0x00000001400CC000-memory.dmp

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