stealc | f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467

General

Target

f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
Size

1.7MB
MD5

bd2ee87991c403738d17e3b667a7e890
SHA1

09d7e8c585e2f63498fa3fee21b97d43ca39f115
SHA256

f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467
SHA512

ab332be48e6b8dce1d38134a0788d9eb093e7bafda020377d64952779f3538d42e9d6b50993809e67e338e40d49dd15b48d5f750530c29a09cff94eb93775292
SSDEEP

49152:BkEr+aR+cdqj5JA39L+LQIg4iampyh4CsxQn3ABPA:+ErnR+cwkg9TiLpyh4Cs4AC

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.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	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.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
2560	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2472	2560	WerFault.exe	81

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	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.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	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2560	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
2560	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
2560	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
2560	f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe

C:\Users\Admin\AppData\Local\Temp\f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.exe
"C:\Users\Admin\AppData\Local\Temp\f44d003689a632533001f298448bb3f74730e7b21fdd897785edfa0e60701467N.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:2560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2560 -s 1472
  2⤵
  - Program crash
  PID:2472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2560 -ip 2560
1⤵
PID:3944

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/2560-0-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-1-0x00000000779D4000-0x00000000779D6000-memory.dmp

Filesize
8KB

Download
memory/2560-2-0x0000000000711000-0x0000000000728000-memory.dmp

Filesize
92KB

Download
memory/2560-3-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-4-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-5-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-6-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-7-0x0000000000710000-0x0000000000DB2000-memory.dmp

Filesize
6.6MB

Download
memory/2560-8-0x0000000000710000-0x0000000000DB2000-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