stealc | 8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 02:42

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General

Target

8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe
Size

1.7MB
MD5

4e1aeb2af7f03489910191a52ca62e9d
SHA1

19aa302c12320006830d98435904f87dbb6fda37
SHA256

8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004
SHA512

a7b04afc4dd5943ba821c4daf9ec234a00889a5300bc7726f44df79c163b13b3db579943d1e8629cfd952c89f1e0debd0060e80daab0c1fb5bd0acd15ab34dc1
SSDEEP

24576:cWz3vyiqbde7wCACQE4cug6yxyFIrT5ALuZWmiZAVFoMD9fndFeGetegxST2:c6/6bSrAdE9XxyiTesWTAllGTxS

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__	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.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	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2184	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.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	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2184	8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe

C:\Users\Admin\AppData\Local\Temp\8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.exe
"C:\Users\Admin\AppData\Local\Temp\8542a31a1ac10834026660ffab1ceb88d1cf399a802f63bdca797750b7819004.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:2184

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/2184-0-0x0000000000060000-0x00000000006F6000-memory.dmp

Filesize
6.6MB

Download
memory/2184-1-0x0000000077340000-0x0000000077342000-memory.dmp

Filesize
8KB

Download
memory/2184-2-0x0000000000061000-0x0000000000078000-memory.dmp

Filesize
92KB

Download
memory/2184-3-0x0000000000060000-0x00000000006F6000-memory.dmp

Filesize
6.6MB

Download
memory/2184-4-0x0000000000060000-0x00000000006F6000-memory.dmp

Filesize
6.6MB

Download