stealc | 1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 09:50

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General

Target

1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe
Size

2.8MB
MD5

c8b363548ff963b9eaefdcf0ab866e99
SHA1

d3e0fa20ca34e90e5640d30cfd56e7c4b941e917
SHA256

1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2
SHA512

5e69aa93ee6bd2fe29464cf0c07026cefcab515c4217cd6eaa37fe7fb36ceee37a68242625e2fdd70efdc4bdf2cecbb9727189a6f2b3f21138fd6378ad33d3cf
SSDEEP

49152:6lavRTU8eA6rznNJ+vdh1ua5TnuEKUGKcdQZe3BfVHMRd4NX:6lyTU8eA6rznNJsvnDXGKcdQY3BiyX

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__	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.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	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3684	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.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	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3684	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe
3684	1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe

C:\Users\Admin\AppData\Local\Temp\1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.exe
"C:\Users\Admin\AppData\Local\Temp\1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2.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:3684

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/3684-0-0x0000000000390000-0x000000000088D000-memory.dmp

Filesize
5.0MB

Download
memory/3684-1-0x0000000077AC4000-0x0000000077AC6000-memory.dmp

Filesize
8KB

Download
memory/3684-2-0x0000000000391000-0x00000000003A8000-memory.dmp

Filesize
92KB

Download
memory/3684-3-0x0000000000390000-0x000000000088D000-memory.dmp

Filesize
5.0MB

Download
memory/3684-4-0x0000000000390000-0x000000000088D000-memory.dmp

Filesize
5.0MB

Download