stealc | b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36

Analysis

max time kernel
93s
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
21-11-2024 08:07

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General

Target

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe
Size

1.7MB
MD5

f8130f10566598b947b7bb832ea69cdc
SHA1

100bfbbf8a24435f4e43230acbd9a95f48edb0fe
SHA256

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36
SHA512

7c84a020c432e5df530344931033cff64804b66f82a3884426a55d564d9d6be61709c57422a6331f3af7bbec3231cbd4e3ae8491e5f23b3491f065f382b20c39
SSDEEP

24576:engJcwgDBj9qz9ZV2cf4DB9CtNBBGEXSUrpqJY3SDCCBp2Zaym0Fp:IgJclF9qwcgDBI9BGWSUll31ky

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:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.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:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.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:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

pid process

4088 b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.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:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

pid	process
4088	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe
4088	b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe

C:\Users\Admin\AppData\Local\Temp\b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.exe
"C:\Users\Admin\AppData\Local\Temp\b97c1c3fd5c344ed61aea9bbaef5b58d53536a8294cee89020f0121fbc5eac36.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:4088

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/4088-0-0x00000000009E0000-0x000000000107A000-memory.dmp

Filesize
6.6MB

Download
memory/4088-1-0x0000000077DD4000-0x0000000077DD6000-memory.dmp

Filesize
8KB

Download
memory/4088-2-0x00000000009E1000-0x00000000009F8000-memory.dmp

Filesize
92KB

Download
memory/4088-3-0x00000000009E0000-0x000000000107A000-memory.dmp

Filesize
6.6MB

Download
memory/4088-4-0x00000000009E0000-0x000000000107A000-memory.dmp

Filesize
6.6MB

Download