stealc | f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/11/2024, 02:53

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General

Target

f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe
Size

1.7MB
MD5

cc4814443625e3d73a4ce191873a2990
SHA1

d4044b6f955b0b5303471f49da0e8af46bb66a3c
SHA256

f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621
SHA512

4c309e78f5846df7b67ac45ded7072ae9dcde7c7dd799b0563395726b4901c6e60d814e8d540a9c1b4084e5c94d961a7eb9623b292bdb5b15760f5015c172aaa
SSDEEP

24576:IbK1O9Vn0uAT5YjrsePX8mbLsZGzQst7OsU/VfNLHxUhkKeq4KdtFuN:IX9VndyYjrsePMokGzQs7aNLRckxS7F

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.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	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1296	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.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	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1296	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe
1296	f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe

C:\Users\Admin\AppData\Local\Temp\f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.exe
"C:\Users\Admin\AppData\Local\Temp\f7b28824e3a45ba5f96b6c0d2233dd9f818912f7e6b69d2a5a037c8823220621N.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:1296

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/1296-0-0x0000000000F20000-0x00000000015C1000-memory.dmp

Filesize
6.6MB

Download
memory/1296-1-0x00000000774D4000-0x00000000774D6000-memory.dmp

Filesize
8KB

Download
memory/1296-2-0x0000000000F21000-0x0000000000F38000-memory.dmp

Filesize
92KB

Download
memory/1296-3-0x0000000000F20000-0x00000000015C1000-memory.dmp

Filesize
6.6MB

Download
memory/1296-5-0x0000000000F20000-0x00000000015C1000-memory.dmp

Filesize
6.6MB

Download