stealc | 17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2

General

Target

17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
Size

2.8MB
MD5

0c5f765bc208ceef4c1e5bb760089e83
SHA1

af5a32090aa4d26a02290a0e19f229f9f1c0ba71
SHA256

17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2
SHA512

0c08163e285e0f9cc2ebf3da1fa01a888c836aa673526ace2b534a445a3f165eedb357a4728dee2c60ddb4172d893739a90cae6adfebef2d7df6af97d26edd89
SSDEEP

49152:gdz6RdHP1d63QMJwmPplv875GLhWUO1WbqomsZ9atAMgHM:vv1d6AM+wplv875GLAV1WbqoX8tAr

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__	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.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	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.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	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.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
1524	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4240	1524	WerFault.exe	83

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	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.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	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1524	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
1524	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
1524	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
1524	17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe

C:\Users\Admin\AppData\Local\Temp\17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.exe
"C:\Users\Admin\AppData\Local\Temp\17f06e1a3b293bcd8507f641697b94d3f4d7ef9db7c6f165cee750d7b0c686d2.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:1524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 1476
  2⤵
  - Program crash
  PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1524 -ip 1524
1⤵
PID:4528

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/1524-0-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-1-0x00000000773D4000-0x00000000773D6000-memory.dmp

Filesize
8KB

Download
memory/1524-3-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-2-0x0000000000D11000-0x0000000000D28000-memory.dmp

Filesize
92KB

Download
memory/1524-4-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-5-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-6-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-7-0x0000000000D10000-0x000000000120A000-memory.dmp

Filesize
5.0MB

Download
memory/1524-8-0x0000000000D10000-0x000000000120A000-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