stealc | a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 08:01

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General

Target

a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe
Size

2.7MB
MD5

081826151309ad9d42290bd44a886614
SHA1

3d37094b9a5780175e56160936626433de21e348
SHA256

a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e
SHA512

ca9e2f871325d79a20ca275d34f2eeb9cdf86d22e88cbbaf164a1e24dd70954746c9ea656575437e5552e9f3c02f90ba8b0959cf1097adb81633767bde944539
SSDEEP

24576:nLk+07DQLpG+lqM89oNkTf4qdbiw6PF1NP5Z5ksZ+fvy2oSnNvmAQ9SJLWsfNp6R:LWL+lw73QVFbyJoSQ9wL7T65qI+1k9

Score

10^/10

stealc stok discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.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\VideoBiosVersion	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4964	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.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	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4964	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe
4964	a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe

C:\Users\Admin\AppData\Local\Temp\a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.exe
"C:\Users\Admin\AppData\Local\Temp\a4d3e8d67b995319a03f414502949018830e67d5f98e18ce50d1fd6199d0aa1e.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:4964

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/4964-0-0x0000000000B70000-0x0000000001060000-memory.dmp

Filesize
4.9MB

Download
memory/4964-1-0x00000000775B4000-0x00000000775B6000-memory.dmp

Filesize
8KB

Download
memory/4964-2-0x0000000000B71000-0x0000000000B88000-memory.dmp

Filesize
92KB

Download
memory/4964-3-0x0000000000B70000-0x0000000001060000-memory.dmp

Filesize
4.9MB

Download
memory/4964-5-0x0000000000B70000-0x0000000001060000-memory.dmp

Filesize
4.9MB

Download