stealc | c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852

General

Target

c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe
Size

2.7MB
MD5

24a563d4b1a6969745fe2b9f8bdca603
SHA1

084e3ead53e193c3deb7d2c176299a17b7942717
SHA256

c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852
SHA512

9bb4e0345e83e26def46a16ded98747ca0b3b1b582cad8f02fb280bcecf14c075cc82dd790c5c9c0f1831673a1fd1897c8e59b091bf22f284352a627f7a94085
SSDEEP

49152:KAsFlcXdojKYDcEfTYIG1eqLNQNQWaqW4S:KAsFlctojKYDBfEHeRNDaj4S

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__	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.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	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.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
1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1520	1984	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	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.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	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe
1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1520	1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe	32
PID 1984 wrote to memory of 1520	1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe	32
PID 1984 wrote to memory of 1520	1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe	32
PID 1984 wrote to memory of 1520	1984	c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe	32

C:\Users\Admin\AppData\Local\Temp\c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.exe
"C:\Users\Admin\AppData\Local\Temp\c8a4910429c8023204a72f52446cce358a3702086825996fe0a2d0a5c28b7852.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:1984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1984 -s 928
  2⤵
  - Program crash
  PID:1520

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/1984-0-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-1-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-2-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-3-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-4-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-5-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-6-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-7-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-8-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-9-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-10-0x0000000000D80000-0x0000000001272000-memory.dmp

Filesize
4.9MB

Download
memory/1984-11-0x0000000000D80000-0x0000000001272000-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