stealc | a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
23-08-2024 14:51

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General

Target

a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe
Size

1.7MB
MD5

869a131479a46dbf07834129f180f371
SHA1

ac2661bb895e03caf699d5423a43d2110fc9a845
SHA256

a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542
SHA512

c3c6ef301a4c8bfe8250f7767191b45183b5668321acda37031b25119dc591b24b00260785c915d5f288833dd358308a232047af34195cd59ca843fae7e836a2
SSDEEP

49152:2siTGYfR11ezGbOkxOtm6KzP+gPBWmlRG:2sKGaVMGxxE9smgpjR

Score

10^/10

stealc leva discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

leva

http://185.215.113.100

Attributes

url_path
/e2b1563c6670f193.php

Signatures

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

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.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	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Wine	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2632	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.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	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2632	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe
2632	a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe

C:\Users\Admin\AppData\Local\Temp\a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.exe
"C:\Users\Admin\AppData\Local\Temp\a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542.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:2632

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

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Downloads

memory/2632-0-0x0000000000400000-0x0000000000A85000-memory.dmp

Filesize
6.5MB

Download
memory/2632-1-0x0000000077686000-0x0000000077688000-memory.dmp

Filesize
8KB

Download
memory/2632-2-0x0000000000401000-0x0000000000415000-memory.dmp

Filesize
80KB

Download
memory/2632-3-0x0000000000400000-0x0000000000A85000-memory.dmp

Filesize
6.5MB

Download
memory/2632-5-0x0000000000400000-0x0000000000A85000-memory.dmp

Filesize
6.5MB

Download