stealc | 33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0

Analysis

max time kernel
95s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2025, 05:36

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General

Target

33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe
Size

1.7MB
MD5

64c2243b198bf1aabd4db85d324f906a
SHA1

31185ebdfb7baf85cc3410f264e928a9cef5be0d
SHA256

33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0
SHA512

42b706a64e5420a47e31529832e1d4de804464d3af28ee07636252fbd70adc40f20facbb178f325722fbc47527a7d16b86939beed81bc1fbe7231ea39b974f10
SSDEEP

49152:KM8uY0UuD2SLirBJ5k3Nl+nKGhr3HXZeMJNmcc49:n8uxUEIrEV0JpWc

Score

10^/10

stealc stok defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4804	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4804	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe
4804	33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe

C:\Users\Admin\AppData\Local\Temp\33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe
"C:\Users\Admin\AppData\Local\Temp\33d88c06404ac5c96042f389997224c7c0b570ebe4cb0e60878e072e337dbde0.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4804-0-0x0000000000C50000-0x00000000012D8000-memory.dmp

Filesize
6.5MB

Download
memory/4804-1-0x0000000077014000-0x0000000077016000-memory.dmp

Filesize
8KB

Download
memory/4804-2-0x0000000000C51000-0x0000000000C68000-memory.dmp

Filesize
92KB

Download
memory/4804-5-0x0000000000C50000-0x00000000012D8000-memory.dmp

Filesize
6.5MB

Download
memory/4804-4-0x0000000000C50000-0x00000000012D8000-memory.dmp

Filesize
6.5MB

Download