stealc | fa8380534c7876773e1315360225f92d30fc4ff6c4cdf70bebaf16e5f450d6f5

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 17:36

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General

Target

file.exe
Size

1.7MB
MD5

c80d723528ed0121eef557cc31bd4c87
SHA1

150ec423edbfb73989a525fc3b553d06f411ece7
SHA256

fa8380534c7876773e1315360225f92d30fc4ff6c4cdf70bebaf16e5f450d6f5
SHA512

3ae11b656d242e891881b5833781a1431d0dde16de66a21b775613a7d02e098a68ad41301fa85f5cf3bd0bb7561c1ab784fd0d3c4940a45d66aa67f10b475da8
SSDEEP

49152:FeFnYVk0QSUFysYk0uyMIDv9fPFNC0c2c316Ph3qR:FAYVk0QSUFysb2MIRC0dh3qR

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:

file.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ file.exe

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

file.exe

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

file.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine file.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

Processes:

file.exe

pid process

2680 file.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4988 2680 WerFault.exe file.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:

file.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	file.exe

pid	process
2680	file.exe

pid	pid_target	process	target process
4988	2680	WerFault.exe	file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.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

Processes:

file.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

file.exe

pid process

2680 file.exe
2680 file.exe
2680 file.exe
2680 file.exe

pid	process
2680	file.exe
2680	file.exe
2680	file.exe
2680	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 1492
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2680 -ip 2680
1⤵
PID:4292

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/2680-0-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-1-0x0000000077BD4000-0x0000000077BD6000-memory.dmp

Filesize
8KB

Download
memory/2680-2-0x00000000006C1000-0x00000000006D8000-memory.dmp

Filesize
92KB

Download
memory/2680-3-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-4-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-5-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-6-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-7-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/2680-8-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download