stealc | fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614

General

Target

fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe
Size

2.8MB
MD5

9cc29de2181140ba98ecba7376a5a1b2
SHA1

8462b882592aac26862dc0da719250ce0bda695d
SHA256

fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614
SHA512

17f8bc94dd499c8e0c8f646e8e3645459ae70a436d442e8783b4d9cf456927900daf71a455cc7860c8c45c870d31eeb533aa15ba2631ce01ec5c9b91c96cc1bc
SSDEEP

49152:HcuI/feD9XadQ3i5sQzM/V83X3Us8q5OWhqXMKUWco:HcJfeD9XadQyDM/iH3UsR5OWhqN5

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__	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.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	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.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
236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2896	236	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	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.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	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe
236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 236 wrote to memory of 2896	236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe	32
PID 236 wrote to memory of 2896	236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe	32
PID 236 wrote to memory of 2896	236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe	32
PID 236 wrote to memory of 2896	236	fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe	32

C:\Users\Admin\AppData\Local\Temp\fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.exe
"C:\Users\Admin\AppData\Local\Temp\fb60321eb9cb9b74ffe05e0ad8de162167c22761d9faeee55fcd5e6146bbb614.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:236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 236 -s 928
  2⤵
  - Program crash
  PID:2896

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/236-0-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-1-0x0000000077BC0000-0x0000000077BC2000-memory.dmp

Filesize
8KB

Download
memory/236-2-0x0000000000AE1000-0x0000000000AF8000-memory.dmp

Filesize
92KB

Download
memory/236-3-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-4-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-5-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-6-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-7-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-8-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-9-0x0000000000AE0000-0x0000000000FE4000-memory.dmp

Filesize
5.0MB

Download
memory/236-10-0x0000000000AE0000-0x0000000000FE4000-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