stealc | 9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de

General

Target

9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
Size

1.7MB
MD5

ca2c3b369a889c70e87f9dfad6a67023
SHA1

0a2f0e7f37004c863efe5c4f8caf19f0b51151b1
SHA256

9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de
SHA512

40deb70b0483a62b5d079b09cd8c087bf210aeb41be51b91262f8dae574bb850c6033b59b833eef9663120a326fbe24652a23718c4cd90cbaf356fe8d1594bd8
SSDEEP

24576:R68FEyWvxF7H1AY5UzKSoYYCvinc1V3vrug4Z+RxZ/iVo0RRslPTsqhsLxh:RFEyYFpLSKSsCSof6gyghqoIRQnsL

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__	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.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	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.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
4916	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
912	4916	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	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.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	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4916	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
4916	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
4916	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
4916	9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe

C:\Users\Admin\AppData\Local\Temp\9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.exe
"C:\Users\Admin\AppData\Local\Temp\9ec54f886c3e4776af4553ac665cd5ec8fd790b4970f962487c11ecfa53ba2de.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:4916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 1500
  2⤵
  - Program crash
  PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4916 -ip 4916
1⤵
PID:1012

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/4916-0-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-1-0x00000000778E4000-0x00000000778E6000-memory.dmp

Filesize
8KB

Download
memory/4916-2-0x0000000000EA1000-0x0000000000EB8000-memory.dmp

Filesize
92KB

Download
memory/4916-3-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-4-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-5-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-6-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-7-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download
memory/4916-8-0x0000000000EA0000-0x0000000001522000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads