stealc | c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc

General

Target

c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe
Size

1.7MB
MD5

d20b142ef07e8e4286dfb3da737eabec
SHA1

786df47ad1ac3f52d30ac2575ee8758aad042903
SHA256

c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc
SHA512

0690bb7dc1fcca80508d018ab3bc3761d8ea26f050562c7bcbdbc8610966fa228c81ad3e43b1d45e69e2df97b071dd9b2498d14a920c0762c2a8478a4b8174da
SSDEEP

49152:4DirbioWfOHyKNE0GRN6JCHnKBQf0lpuSRg2:4WP8mblSN6JbQf6vRg

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__	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.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	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.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
2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2608	2084	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	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.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	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe
2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2608	2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe	32
PID 2084 wrote to memory of 2608	2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe	32
PID 2084 wrote to memory of 2608	2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe	32
PID 2084 wrote to memory of 2608	2084	c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe	32

C:\Users\Admin\AppData\Local\Temp\c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.exe
"C:\Users\Admin\AppData\Local\Temp\c953b6b60ed594defa097d5d4874d2f65991c8fe32ddff23161155dd54f99cfc.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:2084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 928
  2⤵
  - Program crash
  PID:2608

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/2084-0-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-1-0x00000000773D0000-0x00000000773D2000-memory.dmp

Filesize
8KB

Download
memory/2084-2-0x00000000011D1000-0x00000000011E8000-memory.dmp

Filesize
92KB

Download
memory/2084-3-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-4-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-5-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-6-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-7-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-8-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-9-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-10-0x00000000011D0000-0x0000000001852000-memory.dmp

Filesize
6.5MB

Download
memory/2084-11-0x00000000011D0000-0x0000000001852000-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