stealc | 495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89

General

Target

495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
Size

1.7MB
MD5

bf8c133b81c52a501d6e0add51f14791
SHA1

b1446a5b9e7532a5029bfa5fc342f29e1823ab35
SHA256

495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89
SHA512

23077fcb800fa53d1272308e3215c3371cb618048e4425d53ee35cbee580d2bb2f2e380ff4139ec1fdbfc3895a5314c7dbf2723821abb8909617bfa305043837
SSDEEP

49152:zr3w/hRjankGerqGU7onLgjarilEx1lheD6j4:zEhlIRes7Mri+DlID68

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__	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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
2256	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
636	2256	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	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2256	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
2256	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
2256	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
2256	495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe

C:\Users\Admin\AppData\Local\Temp\495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
"C:\Users\Admin\AppData\Local\Temp\495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1440
  2⤵
  - Program crash
  PID:636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2256 -ip 2256
1⤵
PID:228

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/2256-0-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-1-0x0000000077E14000-0x0000000077E16000-memory.dmp

Filesize
8KB

Download
memory/2256-2-0x0000000000781000-0x0000000000798000-memory.dmp

Filesize
92KB

Download
memory/2256-3-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-4-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-5-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-6-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-7-0x0000000000780000-0x0000000000E1C000-memory.dmp

Filesize
6.6MB

Download
memory/2256-8-0x0000000000780000-0x0000000000E1C000-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