stealc | 18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8

General

Target

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
Size

1.7MB
MD5

4a5c66c65d88e38925c6c966863a3a50
SHA1

1de96bfa790c82dc9826f070e5ffbf46822fb32f
SHA256

18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8
SHA512

86857c0cc4c43b90ec174973d6cbdaea2f10def68db74f7f6d782b9874bf70cee653dfdbce4e50178c2860bc71f462bbec4b162b20f69d919096156c8a9bd66f
SSDEEP

24576:eocKijLekTBOANLdMYIOfWrJvFe9B1oRcuPz61p4AYN6fd+sPp8i8EpiOsP7ZDJG:mB/OitfY89voRxmppnOiy/EEnmIpc

Score

10^/10

stealc mars discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

mars

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__	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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\VideoBiosVersion	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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
4024	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2656	4024	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	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4024	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
4024	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
4024	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
4024	18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe

C:\Users\Admin\AppData\Local\Temp\18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.exe
"C:\Users\Admin\AppData\Local\Temp\18a8b7421ba6d34e4328f13cef286ce780bb8bace3c31f9558c6d11a560bb1a8.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:4024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4024 -s 1484
  2⤵
  - Program crash
  PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4024 -ip 4024
1⤵
PID:4860

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/4024-0-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-1-0x00000000777A4000-0x00000000777A6000-memory.dmp

Filesize
8KB

Download
memory/4024-2-0x00000000003E1000-0x00000000003F8000-memory.dmp

Filesize
92KB

Download
memory/4024-3-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-4-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-5-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-6-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-7-0x00000000003E0000-0x0000000000A76000-memory.dmp

Filesize
6.6MB

Download
memory/4024-8-0x00000000003E0000-0x0000000000A76000-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