stealc | e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69

General

Target

e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
Size

1.7MB
MD5

3044b99e7982c3de126391ec95494b00
SHA1

5a07183899ed1b2b4f590e4df99f3622b9f7b2f9
SHA256

e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69
SHA512

b78b35789b489d97257ed10f813b8781eaeefa704c02e024bf4ebc55352dea4f0b3bd295e619b65bbce77764384fe656caa3d49d7079011adf54918a1d0e46f4
SSDEEP

49152:VGUwfAIwoHpythFn8dG+hYFnGLOT4yGbr8P:VY4xoHCb8dG+hYFLTeb

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__	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.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	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.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
3644	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3080	3644	WerFault.exe	81

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	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.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	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3644	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
3644	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
3644	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
3644	e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe

C:\Users\Admin\AppData\Local\Temp\e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.exe
"C:\Users\Admin\AppData\Local\Temp\e1ad7285d9398a55b0acf4892841ec351e0b6d91601b44b7c9b8c55dac13cc69N.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:3644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3644 -s 1480
  2⤵
  - Program crash
  PID:3080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3644 -ip 3644
1⤵
PID:2360

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/3644-0-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-1-0x0000000077EB4000-0x0000000077EB6000-memory.dmp

Filesize
8KB

Download
memory/3644-2-0x0000000000F61000-0x0000000000F78000-memory.dmp

Filesize
92KB

Download
memory/3644-3-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-4-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-5-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-6-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-7-0x0000000000F60000-0x00000000015E2000-memory.dmp

Filesize
6.5MB

Download
memory/3644-8-0x0000000000F60000-0x00000000015E2000-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