stealc | d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e

General

Target

d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe
Size

5.0MB
MD5

44c94d7f0644332d48b526eacf5429bc
SHA1

add623218ce3587aa95160aaa2545f42825d396a
SHA256

d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e
SHA512

17a08fd45d44bffdc4a7b6972c1e21aa00723e138cfd912af37ca2d841f7c5496f6b156515d53649843ec9965f814537f765d75300edb75e85db19229be4f54c
SSDEEP

49152:6zi0EoHKYUQMIE91EaKsMIEA8HSCtVTeQzIdjMLF2bGlnl/tkAG/a1k1seY8c4C:6ZtVTeaUjAj1Csez

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__	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.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	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.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
1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1044	1908	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	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.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	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe
1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 1044	1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe	31
PID 1908 wrote to memory of 1044	1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe	31
PID 1908 wrote to memory of 1044	1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe	31
PID 1908 wrote to memory of 1044	1908	d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe	31

C:\Users\Admin\AppData\Local\Temp\d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.exe
"C:\Users\Admin\AppData\Local\Temp\d126b8b51ce59d98fbf6a3700b06ec175bc1df8925cfbe388c8be0b88a85890e.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:1908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 932
  2⤵
  - Program crash
  PID:1044

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/1908-0-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-1-0x0000000077A70000-0x0000000077A72000-memory.dmp

Filesize
8KB

Download
memory/1908-2-0x0000000000A91000-0x0000000000CDA000-memory.dmp

Filesize
2.3MB

Download
memory/1908-3-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-4-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-5-0x0000000000A91000-0x0000000000CDA000-memory.dmp

Filesize
2.3MB

Download
memory/1908-6-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-7-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-8-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-9-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-10-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-11-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-12-0x0000000000A90000-0x0000000000F8A000-memory.dmp

Filesize
5.0MB

Download
memory/1908-13-0x0000000000A91000-0x0000000000CDA000-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