stealc | 5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f

General

Target

5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
Size

2.7MB
MD5

f14e97a1abdaf1ff45ba1713e42e5338
SHA1

7856c4aacaad28a8e286ece2a1b1e05b37592ba5
SHA256

5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f
SHA512

323ac708ed97e349c3764aa1f65ba3fcab18b0f4d4316486e04d4b1a778a530739bdd42871bdc1c11645293cfc8071bb74527004428f5c6a8c8c2fba531a6257
SSDEEP

49152:LpnuOdgE6piCdBpkPwgdTnBKLBE+W58UnlGORA4k:L5uOdx6piCTpkPt1no9Ez8UT2

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.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	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.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
808	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3552	808	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	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.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	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
808	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
808	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
808	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
808	5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe

C:\Users\Admin\AppData\Local\Temp\5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.exe
"C:\Users\Admin\AppData\Local\Temp\5b3be63e494a84c956589bf2a1bbd023eed78affab01227b3b7db401dd01d32f.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:808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 1428
  2⤵
  - Program crash
  PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 808 -ip 808
1⤵
PID:3748

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/808-0-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-2-0x0000000000F11000-0x0000000000F28000-memory.dmp

Filesize
92KB

Download
memory/808-1-0x00000000770E4000-0x00000000770E6000-memory.dmp

Filesize
8KB

Download
memory/808-3-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-4-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-5-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-6-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-7-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download
memory/808-8-0x0000000000F10000-0x00000000013F5000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads