stealc | f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a

Analysis

max time kernel
92s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 10:23

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General

Target

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe
Size

1.8MB
MD5

2f595e9186b87cd4870ea38f16393d8f
SHA1

4db3549b4dd7c93d8b795e8b194c8f3a105a2b6b
SHA256

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a
SHA512

e1f8de211fb23c8e492dbf43301267f5712c886657c758b189594de80f9bf23f7428d235ad1672101989f544fa8d0185fd2cc70d78cf17a24649b6a59b5fdfc3
SSDEEP

24576:nyrnZpBGO1cKZkRA+aaKDs1Cb10RxmasEdpxNG/7SZQL7Sd1mbjHqSUs5h2d7D2b:nyrnldZkR7ysG0XGEK/OMS6XK2yQJ

Score

10^/10

stealc mars discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

mars

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

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.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

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.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

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

pid process

2436 f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.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

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

pid	process
2436	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe
2436	f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe

C:\Users\Admin\AppData\Local\Temp\f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.exe
"C:\Users\Admin\AppData\Local\Temp\f8b9bc1fd2af3813bfc5c6197a0d20448c21c86f703835782701092d10a1615a.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:2436

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/2436-0-0x00000000002B0000-0x000000000095E000-memory.dmp

Filesize
6.7MB

Download
memory/2436-1-0x0000000077AA4000-0x0000000077AA6000-memory.dmp

Filesize
8KB

Download
memory/2436-2-0x00000000002B1000-0x00000000002C8000-memory.dmp

Filesize
92KB

Download
memory/2436-3-0x00000000002B0000-0x000000000095E000-memory.dmp

Filesize
6.7MB

Download
memory/2436-4-0x00000000002B0000-0x000000000095E000-memory.dmp

Filesize
6.7MB

Download