stealc | ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266

General

Target

ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe
Size

1.7MB
MD5

7502d87b858048de6f2f2e0656a58896
SHA1

d5f7a61a88b5e13fd46490d100f5ab53687523f5
SHA256

ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266
SHA512

abb9696b01cb137d49897026077ffab6f0506ebeebd4f7a3ec79b5a8eb588aa653dffa00eb78a7f4304d5f0e32406abaea44fd456438937f212e3d7cc64e42e7
SSDEEP

49152:e2hsW7GcW7tj1qyK8oUimHFnpKG9LnMrHKbKIh:ecsnBpi8oUVHtbMrXIh

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__	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.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	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.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
1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2664	1692	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	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.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	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe
1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 2664	1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe	32
PID 1692 wrote to memory of 2664	1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe	32
PID 1692 wrote to memory of 2664	1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe	32
PID 1692 wrote to memory of 2664	1692	ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe	32

C:\Users\Admin\AppData\Local\Temp\ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.exe
"C:\Users\Admin\AppData\Local\Temp\ba4c35b5bece7a43ae6b3b7de69717c859000ae10e68053db254d4b652167266.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:1692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 936
  2⤵
  - Program crash
  PID:2664

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/1692-0-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-1-0x0000000077DB0000-0x0000000077DB2000-memory.dmp

Filesize
8KB

Download
memory/1692-2-0x0000000000ED1000-0x0000000000EE8000-memory.dmp

Filesize
92KB

Download
memory/1692-3-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-4-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-5-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-6-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-7-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-8-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-9-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-10-0x0000000000ED0000-0x0000000001561000-memory.dmp

Filesize
6.6MB

Download
memory/1692-11-0x0000000000ED0000-0x0000000001561000-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