stealc | 6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a

General

Target

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Size

2.0MB
MD5

1eaa5775a1249b88fe38b16e03c1f79f
SHA1

16f6fc4941ebbece1d8fd40b4300da31675d497c
SHA256

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a
SHA512

49c8ba781b43c38de9ee3906fa8d69d642ca3a64050fa219193f4f859d982b6ef9a1c20e96cb80be505cc1b5a9351cd9588b5015c82fdf4e910197a0339bb09d
SSDEEP

49152:uperXvdkKFuegDPYSfJ/vIMMMk3M9AZWbb16ZxMXp+bvExcNr:9XlkILUnIdDEbsm+bjNr

Score

10^/10

stealc tale credential_access discovery evasion spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

C2

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

3060 cmd.exe

pid	process
3060	cmd.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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

Loads dropped DLL 1 IoCs

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

pid process

1740 6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

pid process

1740 6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2152 timeout.exe

pid	process
2152	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

pid	process
1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.execmd.exe

description	pid	process	target process
PID 1740 wrote to memory of 3060	1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe	cmd.exe
PID 1740 wrote to memory of 3060	1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe	cmd.exe
PID 1740 wrote to memory of 3060	1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe	cmd.exe
PID 1740 wrote to memory of 3060	1740	6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe	cmd.exe
PID 3060 wrote to memory of 2152	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 2152	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 2152	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 2152	3060	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe
"C:\Users\Admin\AppData\Local\Temp\6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

5

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\chrome.dll

Filesize
676KB

MD5
eda18948a989176f4eebb175ce806255

SHA1
ff22a3d5f5fb705137f233c36622c79eab995897

SHA256
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

SHA512
160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

Download Submit
memory/1740-0-0x0000000000950000-0x0000000001072000-memory.dmp

Filesize
7.1MB

Download
memory/1740-1-0x0000000077DD0000-0x0000000077DD2000-memory.dmp

Filesize
8KB

Download
memory/1740-2-0x0000000000951000-0x00000000009B9000-memory.dmp

Filesize
416KB

Download
memory/1740-3-0x0000000000950000-0x0000000001072000-memory.dmp

Filesize
7.1MB

Download
memory/1740-7-0x0000000000950000-0x0000000001072000-memory.dmp

Filesize
7.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads