stealc | fbb1c5811042bfe6fbc3329c17e2bbb75279d315777768ef6b835a85e9331ef2

Analysis

max time kernel
30s
max time network
5s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2025 19:31

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General

Target

quarantine/random_3.exe
Size

1.7MB
MD5

b43d63871e42c3d2ffe65020e8f2c9ae
SHA1

2b0a70651f92eb3f9871c755f690c35663b2e7e1
SHA256

acf6a8746430f2790af40af611406c3dc738f614c87244e38c9f3183ceacf27b
SHA512

b3b1e239ad0e51c81e369cfbdb964172f8406e6a0d6278e06105063ae5ee6aa972b634d289ec3129aff1b20898108b8795e62f06dc642da16919a7c4ef1b45ca
SSDEEP

49152:y2hR7YCrNfh6HTgEvYPetgVsM/R8My6iEM:yA/rN4z5vYmOVN/R8M35M

Score

10^/10

stealc default defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://ecozessentials.com

Attributes

url_path
/e6cb1c8fc7cd1659.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__	random_3.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	random_3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random_3.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-1-5-21-1161330783-2912525651-1278508834-1000\Software\Wine	random_3.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
856	random_3.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4504	856	WerFault.exe	83

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	random_3.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	random_3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	random_3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
856	random_3.exe
856	random_3.exe
856	random_3.exe
856	random_3.exe

C:\Users\Admin\AppData\Local\Temp\quarantine\random_3.exe
"C:\Users\Admin\AppData\Local\Temp\quarantine\random_3.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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 856 -s 1512
  2⤵
  - Program crash
  PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 856 -ip 856
1⤵
PID:1296

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

Replay Monitor

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Downloads

memory/856-0-0x0000000000CA0000-0x000000000133E000-memory.dmp

Filesize
6.6MB

Download
memory/856-1-0x0000000077594000-0x0000000077596000-memory.dmp

Filesize
8KB

Download
memory/856-2-0x0000000000CA1000-0x0000000000CB8000-memory.dmp

Filesize
92KB

Download
memory/856-3-0x0000000000CA0000-0x000000000133E000-memory.dmp

Filesize
6.6MB

Download
memory/856-4-0x0000000000CA0000-0x000000000133E000-memory.dmp

Filesize
6.6MB

Download