stealc | ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 02:55

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General

Target

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe
Size

1.7MB
MD5

453c59afd11e10b0094658aa65b9659b
SHA1

89083fded0b001e296e5a9c8447a5552a55e0065
SHA256

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18
SHA512

f1ed0f85497b82e5429c2a0c224cff479488556deefb7e8074d77d3d669ae978aeba668e9feaf5f13fdcfccace844ab2bd6ea2838775f13d954122319b2c048b
SSDEEP

24576:ojbkK0RLYofX1IirjhZkrhKfp5AKA/osc3Ye5oVxhJkzlo/HrLaKJp4:ojunfX5jhMEfvbsc3Y3DkGzL

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:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.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:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.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:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

pid process

2692 ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

pid	process
2692	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.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:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

pid process

2692 ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

pid	process
2692	ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe

C:\Users\Admin\AppData\Local\Temp\ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.exe
"C:\Users\Admin\AppData\Local\Temp\ac58e9eaf21037b02fda46678d5af12713db0306531b9b282d77cac16b9f3e18.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:2692

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/2692-0-0x0000000000390000-0x0000000000A2C000-memory.dmp

Filesize
6.6MB

Download
memory/2692-1-0x00000000774B0000-0x00000000774B2000-memory.dmp

Filesize
8KB

Download
memory/2692-3-0x0000000000390000-0x0000000000A2C000-memory.dmp

Filesize
6.6MB

Download
memory/2692-2-0x0000000000391000-0x00000000003A8000-memory.dmp

Filesize
92KB

Download
memory/2692-4-0x0000000000390000-0x0000000000A2C000-memory.dmp

Filesize
6.6MB

Download