stealc | 18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 02:09

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General

Target

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
Size

1.7MB
MD5

4a5c66c65d88e38925c6c966863a3a50
SHA1

1de96bfa790c82dc9826f070e5ffbf46822fb32f
SHA256

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8
SHA512

86857c0cc4c43b90ec174973d6cbdaea2f10def68db74f7f6d782b9874bf70cee653dfdbce4e50178c2860bc71f462bbec4b162b20f69d919096156c8a9bd66f
SSDEEP

24576:eocKijLekTBOANLdMYIOfWrJvFe9B1oRcuPz61p4AYN6fd+sPp8i8EpiOsP7ZDJG:mB/OitfY89voRxmppnOiy/EEnmIpc

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:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

pid process

2556 18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

pid	process
2556	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

pid process

2556 18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

pid	process
2556	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

C:\Users\Admin\AppData\Local\Temp\18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
"C:\Users\Admin\AppData\Local\Temp\18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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:2556

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/2556-0-0x00000000012E0000-0x0000000001976000-memory.dmp

Filesize
6.6MB

Download
memory/2556-3-0x00000000012E0000-0x0000000001976000-memory.dmp

Filesize
6.6MB

Download
memory/2556-2-0x00000000012E1000-0x00000000012F8000-memory.dmp

Filesize
92KB

Download
memory/2556-1-0x0000000077230000-0x0000000077232000-memory.dmp

Filesize
8KB

Download
memory/2556-5-0x00000000012E0000-0x0000000001976000-memory.dmp

Filesize
6.6MB

Download