stealc | 18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656

General

Target

18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
Size

1.8MB
MD5

470bf2ba833f097089f37e78c3df7f08
SHA1

de37ca21bdcc7f00edcdba89be290d32bea02c28
SHA256

18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656
SHA512

528613da731aaf565693da64a3a220886d1c5b958b44b72e7afb822735899ca4dcc9ab237581c0d9245fe3a5abbdf5c8db44825f2c4fe77aa488cd8a09f806de
SSDEEP

49152:rivEF0DLLjhBnEMMKMHhvGCynu3CSLkL:rivBLLnEMMKMBvGCynu3CSY

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__	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.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	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.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
4784	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3492	4784	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	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.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	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4784	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
4784	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
4784	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
4784	18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe

C:\Users\Admin\AppData\Local\Temp\18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.exe
"C:\Users\Admin\AppData\Local\Temp\18d5de366cc485f106923690a3b816e582cded05f43ccb5de5d790333b2e3656.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:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 1480
  2⤵
  - Program crash
  PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4784 -ip 4784
1⤵
PID:216

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/4784-0-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download
memory/4784-1-0x0000000076FC4000-0x0000000076FC6000-memory.dmp

Filesize
8KB

Download
memory/4784-2-0x0000000000461000-0x0000000000478000-memory.dmp

Filesize
92KB

Download
memory/4784-3-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download
memory/4784-4-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download
memory/4784-5-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download
memory/4784-7-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download
memory/4784-8-0x0000000000460000-0x0000000000B0D000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads