stealc | 90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60

General

Target

90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe
Size

1.7MB
MD5

4dcc556f843a576529c081a6e1c878e2
SHA1

81844169aee4b15c2ead4b70891ee4a7daf65cf6
SHA256

90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60
SHA512

80083f0538339f19ad077ac53ee6e847c6c30d611444290431c050550b25034331b11c5acb91335a4dc7dde4368ef768cb96f318bf08e550fe819f1fec4d4b98
SSDEEP

49152:vQ3Uvp3RnmYPybOysEgQh2MvqGF7ATjLaZLO:4onebO/v0pAmZL

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__	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.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	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.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
1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2604	1548	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	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.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	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe
1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2604	1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe	32
PID 1548 wrote to memory of 2604	1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe	32
PID 1548 wrote to memory of 2604	1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe	32
PID 1548 wrote to memory of 2604	1548	90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe	32

C:\Users\Admin\AppData\Local\Temp\90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.exe
"C:\Users\Admin\AppData\Local\Temp\90208d9829610c65880196d3e28539b95394639d9b2c6a86c57d6f54d8962e60.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:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1548 -s 928
  2⤵
  - Program crash
  PID:2604

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/1548-0-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-1-0x00000000779B0000-0x00000000779B2000-memory.dmp

Filesize
8KB

Download
memory/1548-2-0x0000000001221000-0x0000000001238000-memory.dmp

Filesize
92KB

Download
memory/1548-3-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-4-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-5-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-6-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-7-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-8-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-9-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-10-0x0000000001220000-0x00000000018C0000-memory.dmp

Filesize
6.6MB

Download
memory/1548-11-0x0000000001220000-0x00000000018C0000-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