stealc | 174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530

General

Target

174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe
Size

1.7MB
MD5

3e0ccaeee3ee14207e81ab27f3a43e43
SHA1

936780a5e957be6eb28ef9dec1fecb89af62cc7c
SHA256

174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530
SHA512

98cf1537b1f715fa2ba8064c4350cb739143eb199479cfb02b3c4043d6908d1b6582436fa7f2277fa7caad9d60e9f26d6b761ae9a859febf6a51ba56bca80b87
SSDEEP

24576:pyALr1LPxtZm/x1rruzADmDUefQ3qTCznxvrEtgizTrtonREeHa+noWawWadm:pn1bsxpSge+wW6vtuRZa+Iwbdm

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__	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.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	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.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
2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2716	2596	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	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.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	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe
2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 2716	2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe	31
PID 2596 wrote to memory of 2716	2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe	31
PID 2596 wrote to memory of 2716	2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe	31
PID 2596 wrote to memory of 2716	2596	174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe	31

C:\Users\Admin\AppData\Local\Temp\174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.exe
"C:\Users\Admin\AppData\Local\Temp\174c1f2d46b88808d787fc3a990faab49c61e37bf1ac7e0a454cabd37b2d9530.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:2596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2596 -s 432
  2⤵
  - Program crash
  PID:2716

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/2596-0-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-1-0x00000000774E0000-0x00000000774E2000-memory.dmp

Filesize
8KB

Download
memory/2596-2-0x00000000008C1000-0x00000000008D8000-memory.dmp

Filesize
92KB

Download
memory/2596-3-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-4-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-5-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-6-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-7-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-8-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-9-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-10-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download
memory/2596-12-0x00000000008C0000-0x0000000000F45000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads