stealc | 76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c

General

Target

76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe
Size

1.7MB
MD5

e3c1c611abbc52f339176b9842c6f758
SHA1

becf4adf856727f2c1a1cb5758e0bbe0245121d4
SHA256

76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c
SHA512

20bc3a862bf1de950f96cc04164a948451ba255ab64c1cb5009823f8f4ab3a2129081a9df4ffddb700d6bff1c4573eccacb0a15a75c7112dd47facbb53ff11d2
SSDEEP

49152:vcRCEEsVhWP0pG2Pw+BPkaJ8G+3oUudGFAU:0RqBJ24mPPJk3oUfAU

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__	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.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	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.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
1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2176	1176	WerFault.exe	28

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	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.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	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe
1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 2176	1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe	30
PID 1176 wrote to memory of 2176	1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe	30
PID 1176 wrote to memory of 2176	1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe	30
PID 1176 wrote to memory of 2176	1176	76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe	30

C:\Users\Admin\AppData\Local\Temp\76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.exe
"C:\Users\Admin\AppData\Local\Temp\76c9bceefeb0543ab3b1499826eb5980d20853f4958c178d6d75484b058b4c4c.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:1176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1176 -s 432
  2⤵
  - Program crash
  PID:2176

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/1176-0-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-1-0x0000000077BA0000-0x0000000077BA2000-memory.dmp

Filesize
8KB

Download
memory/1176-2-0x0000000000FD1000-0x0000000000FE8000-memory.dmp

Filesize
92KB

Download
memory/1176-3-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-4-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-5-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-6-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-7-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-8-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-9-0x0000000000FD0000-0x000000000165D000-memory.dmp

Filesize
6.6MB

Download
memory/1176-11-0x0000000000FD0000-0x000000000165D000-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