stealc | f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221

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
22-11-2024 05:46

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General

Target

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe
Size

1.7MB
MD5

7c941a06afbf58edcc99712e9007be9b
SHA1

4b811986fa63d758a8c6dd2018284e99995ab662
SHA256

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221
SHA512

7698178dfa9b779376e413dc6f7bb34bb9c25481b1bf575e98390d379478727c3446f2c663943b69a4111001bb4269af998aebcfc5a70f6e64d075e032523100
SSDEEP

24576:ebADNhkztqlIbUk/CuQebUs+2Rm+SdO71VZkS4S9GxISOMwOt6mEwQHCQoCn5ZxE:1bCtMgUV2RvxVZkSDcOMZt6FwUbx

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:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.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:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.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:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

pid process

4784 f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.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:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

pid	process
4784	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe
4784	f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe

C:\Users\Admin\AppData\Local\Temp\f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.exe
"C:\Users\Admin\AppData\Local\Temp\f39939dcad900de2de347f7c0e4bf59c0d734b792082c34c70dd095ffffd3221.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:4784

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/4784-0-0x0000000000190000-0x0000000000834000-memory.dmp

Filesize
6.6MB

Download
memory/4784-1-0x0000000077194000-0x0000000077196000-memory.dmp

Filesize
8KB

Download
memory/4784-2-0x0000000000191000-0x00000000001A8000-memory.dmp

Filesize
92KB

Download
memory/4784-3-0x0000000000190000-0x0000000000834000-memory.dmp

Filesize
6.6MB

Download
memory/4784-4-0x0000000000190000-0x0000000000834000-memory.dmp

Filesize
6.6MB

Download