stealc | b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 10:31

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General

Target

b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe
Size

1.7MB
MD5

04f1a1d45f9e3a416c8cd3dc2c0c3ed9
SHA1

dc9c3e544b2ce4adcae422ff12d57843144b4ef4
SHA256

b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096
SHA512

60f884b1ff9333c115e363b3793a42345f42bd51e372e778345db9dd5ad7d5497bea201269709641da30a1c3e15dff4c60065e287512caebcdf0aeb112a68d1c
SSDEEP

49152:m5o5RIWuzcJ3sFno9uhMrX0f++UqB9U81de9AfE:moRIWuzc01hkE++FBldU

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__	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.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	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1628	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.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	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1628	b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe

C:\Users\Admin\AppData\Local\Temp\b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.exe
"C:\Users\Admin\AppData\Local\Temp\b4dd4f0bce4d55f063554bb26c42b7739f91b9d0ef09282f16bd172386155096.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:1628

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

Replay Monitor

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Downloads

memory/1628-0-0x0000000000D60000-0x00000000013EF000-memory.dmp

Filesize
6.6MB

Download
memory/1628-1-0x0000000077230000-0x0000000077232000-memory.dmp

Filesize
8KB

Download
memory/1628-2-0x0000000000D61000-0x0000000000D78000-memory.dmp

Filesize
92KB

Download
memory/1628-3-0x0000000000D60000-0x00000000013EF000-memory.dmp

Filesize
6.6MB

Download
memory/1628-5-0x0000000000D60000-0x00000000013EF000-memory.dmp

Filesize
6.6MB

Download