stealc | b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-11-2024 03:37

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General

Target

b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe
Size

2.0MB
MD5

373d339bb9c741b43730b49fadb09b3d
SHA1

17cb28512e8db596f3273f41539d5880c2e6ad2f
SHA256

b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a
SHA512

789331b6eecb5b6cc71026b2a4d52ae836b673741cad36a531391bdcad03df445f6fc179ba19ab632aa9a6fda4604f2f4cc94d5b4c871b7d344ee3bad8d7fcbb
SSDEEP

49152:fhXOAsSRZihE+7ahenLLeMKO4BtLhEkm7fjPREX:5jsuZiTL5K5DlAfDqX

Score

10^/10

stealc tale discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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__	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.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\SystemBiosVersion	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2532	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.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	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2532	b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe

C:\Users\Admin\AppData\Local\Temp\b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.exe
"C:\Users\Admin\AppData\Local\Temp\b4db52719419f608b6b9d01ca88942cf1e27dd03b5509d8b1e36c6d9f1925b3a.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:2532

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/2532-0-0x0000000000840000-0x0000000000F77000-memory.dmp

Filesize
7.2MB

Download
memory/2532-1-0x0000000077090000-0x0000000077092000-memory.dmp

Filesize
8KB

Download
memory/2532-2-0x0000000000841000-0x00000000008A9000-memory.dmp

Filesize
416KB

Download
memory/2532-3-0x0000000000840000-0x0000000000F77000-memory.dmp

Filesize
7.2MB

Download
memory/2532-4-0x0000000000840000-0x0000000000F77000-memory.dmp

Filesize
7.2MB

Download