stealc | bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd

General

Target

bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe
Size

1.8MB
MD5

de5875c2cf09ba7d4d2b766a7363c511
SHA1

54bd298bf751b869316dd7f6b890161b022f2390
SHA256

bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd
SHA512

f3fa3e98a259b7e033fcd7b878aed378a5ce2d939a872c87066ad444ec471942bb617d30a8f7ec9e63814d323a81304e91c02c3b230aa6e2a9644723f62fe1fb
SSDEEP

49152:OoAsdLj1S/jioDl8NFH2eWFda9trQ4pxJK1:O9YLajik8NF7WFdaf04Ls1

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__	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.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	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.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	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.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
2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3064	2856	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	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.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	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe
2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 3064	2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe	32
PID 2856 wrote to memory of 3064	2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe	32
PID 2856 wrote to memory of 3064	2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe	32
PID 2856 wrote to memory of 3064	2856	bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe	32

C:\Users\Admin\AppData\Local\Temp\bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.exe
"C:\Users\Admin\AppData\Local\Temp\bbc98fa5869583d9832f6076dda331847c02c51333a3493472958c02070b50fd.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:2856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2856 -s 924
  2⤵
  - Program crash
  PID:3064

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/2856-0-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-1-0x00000000771B0000-0x00000000771B2000-memory.dmp

Filesize
8KB

Download
memory/2856-2-0x0000000000FF1000-0x0000000001008000-memory.dmp

Filesize
92KB

Download
memory/2856-3-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-4-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-5-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-6-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-7-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-8-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-9-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-10-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download
memory/2856-11-0x0000000000FF0000-0x000000000169D000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads