stealc | 9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3

General

Target

9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe
Size

1.7MB
MD5

1f0f6a77f1d6f780501b015ba797d2cc
SHA1

e4653a09d365177c78a372ed4112408549c809bc
SHA256

9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3
SHA512

f00c6722f7f840a5f25d5afed098779ccc68ed3b2269a5b8288501b93a7a42c50474d2896fdf594840880d21cd4d62c44dcd9afa45c2133c9ef66567e549a86a
SSDEEP

49152:AcPxcY5L+/3lS3N4dalazwaX8CV5x2gw:AcPKK+79z3MCVyg

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__	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.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	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.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
2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1680	2508	WerFault.exe	29

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	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe
2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 1680	2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe	31
PID 2508 wrote to memory of 1680	2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe	31
PID 2508 wrote to memory of 1680	2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe	31
PID 2508 wrote to memory of 1680	2508	9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe	31

C:\Users\Admin\AppData\Local\Temp\9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.exe
"C:\Users\Admin\AppData\Local\Temp\9f969148b95db0e724ecd31010d9d681ee4980cb0e992190b8b2693675316ed3.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:2508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 920
  2⤵
  - Program crash
  PID:1680

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/2508-0-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-1-0x0000000077D20000-0x0000000077D22000-memory.dmp

Filesize
8KB

Download
memory/2508-2-0x0000000000AF1000-0x0000000000B08000-memory.dmp

Filesize
92KB

Download
memory/2508-3-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-4-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-5-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-6-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-7-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-8-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-9-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-10-0x0000000000AF0000-0x0000000001178000-memory.dmp

Filesize
6.5MB

Download
memory/2508-11-0x0000000000AF0000-0x0000000001178000-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