stealc | 712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9

General

Target

712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe
Size

1.7MB
MD5

3b59181d5c523a0ed0bfded3a2bac6d1
SHA1

c863b1e6e130e876a4eb98cc4e646a98dc16d03d
SHA256

712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9
SHA512

37abc97b838dfb8585c7c5d63c392e2914d2f476a6b282e5c09add4af1f1857b9ec3ad9451a7041b23c572ea82f88054d78b2965a66469e2958a36dfc46831d7
SSDEEP

24576:yO4pr/GAiO+YQp4wLMdMNxsyFDuh3aqUYJXLc1xAyURNmXmVeqFluiCrdrf1swJs:LI9iBYQjQyF6h3tP2aZ0mV5EiC9Dxy

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__	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.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	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.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	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.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
1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2448	1660	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	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.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	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe
1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 2448	1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe	32
PID 1660 wrote to memory of 2448	1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe	32
PID 1660 wrote to memory of 2448	1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe	32
PID 1660 wrote to memory of 2448	1660	712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe	32

C:\Users\Admin\AppData\Local\Temp\712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.exe
"C:\Users\Admin\AppData\Local\Temp\712ec9572dfa13d34b8e396248419e30ae065da91c9da604fd9a13c142dbc5d9.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:1660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 924
  2⤵
  - Program crash
  PID:2448

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/1660-0-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-1-0x0000000077680000-0x0000000077682000-memory.dmp

Filesize
8KB

Download
memory/1660-2-0x0000000000B61000-0x0000000000B78000-memory.dmp

Filesize
92KB

Download
memory/1660-3-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-4-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-5-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-6-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-7-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-8-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-9-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-10-0x0000000000B60000-0x0000000001200000-memory.dmp

Filesize
6.6MB

Download
memory/1660-11-0x0000000000B60000-0x0000000001200000-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