stealc | 635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 02:53

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General

Target

635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe
Size

1.7MB
MD5

6c0209a50a7c1e753955748128dde270
SHA1

bb4a9ba88c02a9af90e133b1e04d7a0de8c53a06
SHA256

635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91
SHA512

1d99fac2ddaf013932b5a1924b49e1b4615e0ff2553fa843cc4fefb234bdb15b36cb242dd706b05c85b51869cd319cf493631477bcadf6b816f31b116412ac35
SSDEEP

24576:/XRnTWS9M6G832tc8aegrm2rIEjvWDBqE0A+hBcwbPna7r4EK5DwUoza:/BaSm6nCaetEKDcH+7rD5U1

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__	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.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	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2080	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.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	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2080	635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe

C:\Users\Admin\AppData\Local\Temp\635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.exe
"C:\Users\Admin\AppData\Local\Temp\635cde2d96fde23358854d9139bc7bcc64e806f4590af7423fe5bbebd3804c91N.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:2080

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/2080-0-0x0000000000870000-0x0000000000F09000-memory.dmp

Filesize
6.6MB

Download
memory/2080-1-0x0000000077130000-0x0000000077132000-memory.dmp

Filesize
8KB

Download
memory/2080-2-0x0000000000871000-0x0000000000888000-memory.dmp

Filesize
92KB

Download
memory/2080-3-0x0000000000870000-0x0000000000F09000-memory.dmp

Filesize
6.6MB

Download
memory/2080-4-0x0000000000870000-0x0000000000F09000-memory.dmp

Filesize
6.6MB

Download