stealc | 8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a

Analysis

max time kernel
93s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 07:32

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General

Target

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe
Size

1.7MB
MD5

e7f35e1f1e41b3bb14da4f8191421132
SHA1

eb04d986b51d544374c52e6686ffbf49a061894f
SHA256

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a
SHA512

6fcceb416f836ca6098e6e92e494c052333527a62dccf6a87e8ba06e0b74e19be049140d1aa33102134511ae6522675eabd73f26beb64af096c41a745a432216
SSDEEP

49152:EvILHaQQ40GE2fyAYZ0FRPzYo7nT8CxQwMaqm1+teCaY7:EQja74LE2fIqFRPzY+nAPAqmoeCa8

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:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.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:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.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:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

pid process

4972 8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.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:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

pid	process
4972	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe
4972	8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe

C:\Users\Admin\AppData\Local\Temp\8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.exe
"C:\Users\Admin\AppData\Local\Temp\8bbcfddd11f8cc372bee1d3b8c562b842ef9967033dc1ae9582015ef91366b2a.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:4972

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/4972-0-0x0000000000500000-0x0000000000B9A000-memory.dmp

Filesize
6.6MB

Download
memory/4972-1-0x0000000077054000-0x0000000077056000-memory.dmp

Filesize
8KB

Download
memory/4972-2-0x0000000000501000-0x0000000000518000-memory.dmp

Filesize
92KB

Download
memory/4972-3-0x0000000000500000-0x0000000000B9A000-memory.dmp

Filesize
6.6MB

Download
memory/4972-5-0x0000000000500000-0x0000000000B9A000-memory.dmp

Filesize
6.6MB

Download