stealc | b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83

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
24-11-2024 02:36

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General

Target

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe
Size

1.7MB
MD5

447b432c2a27e71e1053da4d6d520222
SHA1

f5207f5b7b143c1fe2b4edb985efb23d85dcb884
SHA256

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83
SHA512

bfbb1bc1379a4ca187be7ef79f02c1720cce3472c5880e454a1b08efcc594dcaa28bbfc7f8ea07a47f32d1b6578c2fc3265a376590a6104ae60cb96e815ec7b9
SSDEEP

49152:TsqQXcq7cs07ezIdJupoh+sovtV1BXhifBQ+dXvLLbGdPmn:Ves7eEjupohb+tVXKXvTWa

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:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.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:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.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:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Wine	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

pid	Process
1364	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.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:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

pid	Process
1364	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe
1364	b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe

C:\Users\Admin\AppData\Local\Temp\b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.exe
"C:\Users\Admin\AppData\Local\Temp\b21584b91faf4acb978bd265e2f827d631017f328eb49b311f156f6ba008bd83.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:1364

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/1364-0-0x0000000000BB0000-0x000000000123F000-memory.dmp

Filesize
6.6MB

Download
memory/1364-1-0x00000000771D4000-0x00000000771D6000-memory.dmp

Filesize
8KB

Download
memory/1364-2-0x0000000000BB1000-0x0000000000BC8000-memory.dmp

Filesize
92KB

Download
memory/1364-3-0x0000000000BB0000-0x000000000123F000-memory.dmp

Filesize
6.6MB

Download
memory/1364-4-0x0000000000BB0000-0x000000000123F000-memory.dmp

Filesize
6.6MB

Download