stealc | aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5

General

Target

aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe
Size

2.8MB
MD5

68fab06e4f20b7a872f7aa9e3ad2e76a
SHA1

4d552946d82b350575404c92cb799422391921e9
SHA256

aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5
SHA512

dcbce64fbe36af9af032485be6a4677cdbb1dc4c8289d2847f208129e0f19e9b006843b119d1c990b5cc3449bbcef56da0a7f556570ff056ffadb1c252ca469a
SSDEEP

49152:q9LXTi5nN2W7ufS+drXenHwh3MB6YI1WIp:sLXe5MW7mS+Bug3MB6YI1WIp

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__	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.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	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.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
2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2632	2364	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	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.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	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe
2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2632	2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe	32
PID 2364 wrote to memory of 2632	2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe	32
PID 2364 wrote to memory of 2632	2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe	32
PID 2364 wrote to memory of 2632	2364	aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe	32

C:\Users\Admin\AppData\Local\Temp\aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.exe
"C:\Users\Admin\AppData\Local\Temp\aa830882b145a484d6d757ade5ad9383e776f03fde938247502bd7511123bab5.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:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 940
  2⤵
  - Program crash
  PID:2632

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/2364-0-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-1-0x0000000077820000-0x0000000077822000-memory.dmp

Filesize
8KB

Download
memory/2364-2-0x0000000000E91000-0x0000000000EA8000-memory.dmp

Filesize
92KB

Download
memory/2364-3-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-4-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-5-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-6-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-7-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-8-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-9-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-10-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download
memory/2364-11-0x0000000000E90000-0x0000000001387000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads