stealc | 431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868

Analysis

max time kernel
93s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 06:58

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General

Target

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe
Size

1.7MB
MD5

f6e380fc4237efa20d388d1e1cdbeea6
SHA1

eae29f3c97c9276b089dc7d186ab5fae60532f95
SHA256

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868
SHA512

4edb91237f0f2645170c4678818b87c84ce80bd63643e3942a716c273e80da1e664c3054e81ccb33129585bc1376480af366b45cd1c148be2a040af70f885581
SSDEEP

49152:cpFAWg/4zXBC3cKxItsXGiTM1FXpgIHjLDDG:kjgQzRC3bHGiTM1FZBDa

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:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.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:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.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:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

pid process

1016 431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.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:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

pid	process
1016	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe
1016	431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe

C:\Users\Admin\AppData\Local\Temp\431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.exe
"C:\Users\Admin\AppData\Local\Temp\431c2c4b3f9bbefd63dbf6db93d42bde3d674c13aaf86409622b7dc372c37868.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:1016

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/1016-0-0x0000000000800000-0x0000000000EA1000-memory.dmp

Filesize
6.6MB

Download
memory/1016-1-0x0000000077894000-0x0000000077896000-memory.dmp

Filesize
8KB

Download
memory/1016-2-0x0000000000801000-0x0000000000818000-memory.dmp

Filesize
92KB

Download
memory/1016-3-0x0000000000800000-0x0000000000EA1000-memory.dmp

Filesize
6.6MB

Download
memory/1016-4-0x0000000000800000-0x0000000000EA1000-memory.dmp

Filesize
6.6MB

Download