stealc | 02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e

General

Target

02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe
Size

1.7MB
MD5

ea8ae3d8d7c7f38856e114110edd8700
SHA1

6726c6f243d2a2fa514e62bd888d2c4fd566ccfe
SHA256

02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e
SHA512

64f08d13ed762c77f1388814855375357f6d769d10be91af0c84b885fdcf63405854c475f73d02d973c7ea099aff24a668430573aa974d5c8dd7cafb4cc19754
SSDEEP

49152:wkOe6edon40Lm8ltIeXg7D773dCNaJJr:woZotyNe+JJr

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.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\VideoBiosVersion	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.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
2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2596	2016	WerFault.exe	30

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	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.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	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe
2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 2596	2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe	32
PID 2016 wrote to memory of 2596	2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe	32
PID 2016 wrote to memory of 2596	2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe	32
PID 2016 wrote to memory of 2596	2016	02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe	32

C:\Users\Admin\AppData\Local\Temp\02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.exe
"C:\Users\Admin\AppData\Local\Temp\02a954a7b2e594a3d48f654fe40ff0f2b6e10f5a96098cff52d57235a74afd8e.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:2016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 940
  2⤵
  - Program crash
  PID:2596

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2016-0-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-1-0x00000000779B0000-0x00000000779B2000-memory.dmp

Filesize
8KB

Download
memory/2016-2-0x0000000001011000-0x0000000001028000-memory.dmp

Filesize
92KB

Download
memory/2016-3-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-4-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-5-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-6-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-7-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-8-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-9-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-10-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download
memory/2016-11-0x0000000001010000-0x00000000016A2000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads