stealc | 538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce

General

Target

538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe
Size

5.0MB
MD5

5f0ad52dcdb06d74463a7cbc32976310
SHA1

24a8946ede61392b85c5dd902ddc767958b0be8b
SHA256

538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce
SHA512

996bde0dea9adf7fd0661e129243904d89bae4c6cf6c7ac584305ef3c81475ab406331c60c2803777e3eb7add40a1962fe36c3bf0fb54c4b1f0bf5379fdb4cd5
SSDEEP

49152:0Qvc9zT+VhHKNI/Qy5ocfzl3VFboyJPuYbUaR5tc3k:02QzT+VhHKNI/Qy5ocfzFoEZbUaRQ

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__	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.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	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.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
2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2964	2660	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	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.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	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe
2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2964	2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe	31
PID 2660 wrote to memory of 2964	2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe	31
PID 2660 wrote to memory of 2964	2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe	31
PID 2660 wrote to memory of 2964	2660	538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe	31

C:\Users\Admin\AppData\Local\Temp\538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.exe
"C:\Users\Admin\AppData\Local\Temp\538fe15790284eaed6d935abb858f086c48ad10180ac63cad7436d4f5a6420ce.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:2660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2660 -s 936
  2⤵
  - Program crash
  PID:2964

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/2660-0-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-1-0x0000000077820000-0x0000000077822000-memory.dmp

Filesize
8KB

Download
memory/2660-2-0x0000000000181000-0x00000000003CA000-memory.dmp

Filesize
2.3MB

Download
memory/2660-3-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-4-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-5-0x0000000000181000-0x00000000003CA000-memory.dmp

Filesize
2.3MB

Download
memory/2660-6-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-7-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-8-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-9-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-10-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-11-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-12-0x0000000000180000-0x000000000067A000-memory.dmp

Filesize
5.0MB

Download
memory/2660-13-0x0000000000181000-0x00000000003CA000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads