stealc | 55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7

Analysis

max time kernel
93s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/12/2024, 23:08

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General

Target

55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe
Size

2.7MB
MD5

1794618c3a612beaba37a52b7407162f
SHA1

e14a60fabb9755c6269534823a572072bd57605a
SHA256

55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7
SHA512

64a10e0885680297a76a003b7a8e7252637cb4a8e3e0490f5b149cc16d029fba21de19c3190d814701369da3695539fedb43c20dacc87e379729a34f177268e2
SSDEEP

49152:dKGzRtoVBc9p5HsD79phHGN/yoaWQaHKcOP:d1zRtoVBaz47hHGY4bq

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__	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.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	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.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-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2168	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.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	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2168	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe
2168	55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe

C:\Users\Admin\AppData\Local\Temp\55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.exe
"C:\Users\Admin\AppData\Local\Temp\55ca4f0439ebe54bb4f45e96e4e29ded011630dcb6719e80d3532acceb7638d7.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:2168

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/2168-0-0x0000000000EB0000-0x0000000001395000-memory.dmp

Filesize
4.9MB

Download
memory/2168-1-0x0000000077804000-0x0000000077806000-memory.dmp

Filesize
8KB

Download
memory/2168-2-0x0000000000EB1000-0x0000000000EC8000-memory.dmp

Filesize
92KB

Download
memory/2168-3-0x0000000000EB0000-0x0000000001395000-memory.dmp

Filesize
4.9MB

Download
memory/2168-4-0x0000000000EB0000-0x0000000001395000-memory.dmp

Filesize
4.9MB

Download