stealc | fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979

Analysis

max time kernel
96s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2025 01:23

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General

Target

fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe
Size

1.7MB
MD5

926cd6e5082f31fbe0b141a6e58baecf
SHA1

9b48d30944ca891473a796a35dff3840c6e77eb8
SHA256

fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979
SHA512

f5f29175ab72a02e2195da169bfb89870a3b5f8fb190988bdd5a4e7e187aacca714ebb4df7a48c43e1ea067fa170fba581b098b3f5f8c038915129238d837283
SSDEEP

49152:8KlcUWdWFyTCFqB20UPqtk3pieDknv8wv:hWdWQc09k53e

Score

10^/10

stealc stok defense_evasion discovery 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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.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	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Wine	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1268	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.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	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1268	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe
1268	fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe

C:\Users\Admin\AppData\Local\Temp\fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.exe
"C:\Users\Admin\AppData\Local\Temp\fb3d7f402eb87cea1bfe90c8c4c9c96f04351a8c3acb2209fc67136de5de6979.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:1268

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/1268-0-0x0000000000BA0000-0x0000000001249000-memory.dmp

Filesize
6.7MB

Download
memory/1268-1-0x0000000076FD4000-0x0000000076FD6000-memory.dmp

Filesize
8KB

Download
memory/1268-2-0x0000000000BA1000-0x0000000000BB8000-memory.dmp

Filesize
92KB

Download
memory/1268-5-0x0000000000BA0000-0x0000000001249000-memory.dmp

Filesize
6.7MB

Download
memory/1268-4-0x0000000000BA0000-0x0000000001249000-memory.dmp

Filesize
6.7MB

Download