stealc | bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad

General

Target

bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
Size

1.7MB
MD5

ceede8c737ef432d27c0679ca1b1f43e
SHA1

ff534a6f0aa0d696739a73d9b731a3f683ba43c3
SHA256

bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad
SHA512

e879137c7022190e3ebad6a0b371b12cd545e47555c38f57285383b33c85fa643fcacb775946528c7591f71ce443311cd927b58a1912fc19140adf86544e8af6
SSDEEP

49152:n677HVAo8FJiRnCrdrDDqkE+BqnjaXPC+LMDvnEQx:n6dL8+RnCr5DDqkVm2XvYDMi

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__	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.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	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.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
4100	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4536	4100	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	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.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	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4100	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
4100	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
4100	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
4100	bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe

C:\Users\Admin\AppData\Local\Temp\bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.exe
"C:\Users\Admin\AppData\Local\Temp\bbdfa1ef7606a0c5d2dc540fe44628f7fcba58eb023e2f93ba7ffbac5282c0ad.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:4100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4100 -s 1496
  2⤵
  - Program crash
  PID:4536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4100 -ip 4100
1⤵
PID:532

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/4100-0-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-1-0x0000000077504000-0x0000000077506000-memory.dmp

Filesize
8KB

Download
memory/4100-2-0x0000000000E91000-0x0000000000EA8000-memory.dmp

Filesize
92KB

Download
memory/4100-3-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-4-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-5-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-6-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-7-0x0000000000E90000-0x000000000152D000-memory.dmp

Filesize
6.6MB

Download
memory/4100-8-0x0000000000E90000-0x000000000152D000-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