stealc | b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1

Analysis

max time kernel
91s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-12-2024 13:51

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General

Target

b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe
Size

1.7MB
MD5

9a95eb6f0f3e2a8ff62aad9aa08d037e
SHA1

80904b8aaa19338d0013bdcbd04cb729bcd238c0
SHA256

b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1
SHA512

6343b4ac7f6eef69415b7624d7b351199c02664c4b4b3594758c036e2b8dbee6b0e61c2e06cd05242c8faca76a954feaa502317bb67ded500d7c48369157ae98
SSDEEP

49152:gXYskdzbov5u5EEwTWpQ2vEdp5aGf34vxZYOU:gX+daoEEOp5amW6

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__	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.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	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
756	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.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	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
756	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe
756	b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe

C:\Users\Admin\AppData\Local\Temp\b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.exe
"C:\Users\Admin\AppData\Local\Temp\b780d534d09dd628a5df2e78f870dfc8e30392fdc554088075aa0d7607ce81a1.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:756

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

Replay Monitor

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Downloads

memory/756-0-0x0000000000CA0000-0x0000000001329000-memory.dmp

Filesize
6.5MB

Download
memory/756-1-0x0000000076F04000-0x0000000076F06000-memory.dmp

Filesize
8KB

Download
memory/756-2-0x0000000000CA1000-0x0000000000CB8000-memory.dmp

Filesize
92KB

Download
memory/756-3-0x0000000000CA0000-0x0000000001329000-memory.dmp

Filesize
6.5MB

Download
memory/756-5-0x0000000000CA0000-0x0000000001329000-memory.dmp

Filesize
6.5MB

Download