stealc | ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925

General

Target

ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
Size

1.7MB
MD5

fbb5c17a920526c243870da007413d69
SHA1

0f01eefcd42909c7c6177d3ea2a041b4cec630bd
SHA256

ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925
SHA512

7ed3c278ddf8058880709f69ea5b7176910fc1665ea493deadd6d5d7ac2ad4d685af93d70b544b030d3d1c3845d7b3532fa1db18d7bd237998b9a67df76c2685
SSDEEP

49152:csmcpGuLYgOao5oUq5lJqVTlq4/903NXz12S+if:cB2YgOaoHdlqM9O9ZL

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

C2

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.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	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.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-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.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
2272	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3284	2272	WerFault.exe	82

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	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2272	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
2272	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
2272	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
2272	ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe

C:\Users\Admin\AppData\Local\Temp\ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.exe
"C:\Users\Admin\AppData\Local\Temp\ec6ef48d0217005076b5f529341bc1655f7d04bb8ee05519ae6a89cb08b72925.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:2272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2272 -s 1484
  2⤵
  - Program crash
  PID:3284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2272 -ip 2272
1⤵
PID:4800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2272-0-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-1-0x0000000077B94000-0x0000000077B96000-memory.dmp

Filesize
8KB

Download
memory/2272-2-0x00000000002B1000-0x00000000002C8000-memory.dmp

Filesize
92KB

Download
memory/2272-3-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-4-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-5-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-6-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-7-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download
memory/2272-8-0x00000000002B0000-0x000000000094A000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads