stealc | b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431

Analysis

max time kernel
94s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 15:10

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General

Target

b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe
Size

1.7MB
MD5

e33dc32f04e77bc26482baccb87b9795
SHA1

e4a57ead636bd006cecb7d9ec5e9aa36432e1372
SHA256

b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431
SHA512

13d735438d20b0d352719c6e32584ed6abfaad6092ff9124393b3f1c6d6aa4314d0ce27c16cc654583973369572ec823423be9be04e34c50184976c0a35c96cf
SSDEEP

49152:PlBsiXXQPpeAy1tLPyRG2G6qCkBfxeFaE9Pd:PlBpAYASdPyRGGkBfoFaE9P

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__	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.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	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1172	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.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	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1172	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe
1172	b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe

C:\Users\Admin\AppData\Local\Temp\b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.exe
"C:\Users\Admin\AppData\Local\Temp\b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431.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:1172

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/1172-0-0x0000000000DF0000-0x0000000001485000-memory.dmp

Filesize
6.6MB

Download
memory/1172-1-0x00000000776C4000-0x00000000776C6000-memory.dmp

Filesize
8KB

Download
memory/1172-2-0x0000000000DF1000-0x0000000000E08000-memory.dmp

Filesize
92KB

Download
memory/1172-3-0x0000000000DF0000-0x0000000001485000-memory.dmp

Filesize
6.6MB

Download
memory/1172-4-0x0000000000DF0000-0x0000000001485000-memory.dmp

Filesize
6.6MB

Download