stealc | 533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488

General

Target

533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe
Size

1.8MB
MD5

7b2c9935986e129f85e1e7707396697c
SHA1

6024a6e5d5482dc2fb0cb6a1f7e22da26811fb4e
SHA256

533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488
SHA512

fa30e1402298bb15c69d3904209f0a0467e8f11d17848ddc945b1bf524a04d0914bc0b523e58d8d504d86a92d44b00c3490f610af1cd620b9430a39b5061fb7a
SSDEEP

24576:gz6SmqUbmDj9cABDKLvuNBZb7moM1zVbl+TUyhfVADQn5/4oCj3Wrg7clzPo:gbmqUiDjKsKLvmGowh4nZom9iWrhlz

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__	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.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	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.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
2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2012	2348	WerFault.exe	28

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	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.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	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe
2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2012	2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe	30
PID 2348 wrote to memory of 2012	2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe	30
PID 2348 wrote to memory of 2012	2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe	30
PID 2348 wrote to memory of 2012	2348	533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe	30

C:\Users\Admin\AppData\Local\Temp\533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.exe
"C:\Users\Admin\AppData\Local\Temp\533aebd8d829ca8fd2d2de3184e8615104c4e3224935858c0c6dcfa229663488.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
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 432
  2⤵
  - Program crash
  PID:2012

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/2348-0-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-1-0x0000000077960000-0x0000000077962000-memory.dmp

Filesize
8KB

Download
memory/2348-2-0x0000000001081000-0x0000000001098000-memory.dmp

Filesize
92KB

Download
memory/2348-3-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-4-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-5-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-6-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-7-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-8-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-9-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-10-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download
memory/2348-11-0x0000000001080000-0x0000000001727000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads