stealc | 9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb

Analysis

max time kernel
93s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 02:58

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General

Target

9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe
Size

2.7MB
MD5

87ebb8c3e3ec5a31c8d50c80357f18ae
SHA1

d2a4fc99f757e836d433c65cdc940bd195a797bf
SHA256

9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb
SHA512

71427d196695edc0215d3463e35cc3313d5a84a5395b457f12477705ce9a6a4d6efbcc689cc535f0c1f247283f7fd59410bca54cea6e7b1264780e721214b6c4
SSDEEP

49152:ptaY+7Eiqxf5bBMRtUWPJcbbcPX3yl413862:TE7vqxzMR2sgbcPXCl41n2

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.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	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4144	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe

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	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4144	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe
4144	9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe

C:\Users\Admin\AppData\Local\Temp\9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.exe
"C:\Users\Admin\AppData\Local\Temp\9a4f1d82e1719a9f29b4a39041b43c7f7dff5f1feb20501b371e049e8fb6c0bb.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
- Suspicious behavior: EnumeratesProcesses
PID:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4144-0-0x0000000000CC0000-0x00000000011B1000-memory.dmp

Filesize
4.9MB

Download
memory/4144-1-0x0000000077C94000-0x0000000077C96000-memory.dmp

Filesize
8KB

Download
memory/4144-2-0x0000000000CC1000-0x0000000000CD8000-memory.dmp

Filesize
92KB

Download
memory/4144-3-0x0000000000CC0000-0x00000000011B1000-memory.dmp

Filesize
4.9MB

Download
memory/4144-4-0x0000000000CC0000-0x00000000011B1000-memory.dmp

Filesize
4.9MB

Download