stealc | f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 03:48

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General

Target

f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe
Size

1.7MB
MD5

2a5180fa99c0de75ccd62e94f2aae836
SHA1

1275aec60dc64f9905643489eb6fd72f89e6c25d
SHA256

f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934
SHA512

4c0af282f816e68ab275f80dded7fca21dee1544b4be22a08ed9efdad166463cad3b388fa1965357d7cbed513a7653245d646456c1747e7e14d2f4b0babc09c9
SSDEEP

49152:Hy/s5n27wlhMnUTrKr6oyqgeuVZMyBx4Bxa/ErWwlKWt7/h:HaknIe7q6oOnpIBdKMz7

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__	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.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	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2172	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.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	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2172	f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe

C:\Users\Admin\AppData\Local\Temp\f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.exe
"C:\Users\Admin\AppData\Local\Temp\f4550f78fc5ec7db14f88f4fcf5e33f3cfa231eb4d6a31740489e9aa54a29934.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:2172

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/2172-0-0x0000000000BE0000-0x0000000001275000-memory.dmp

Filesize
6.6MB

Download
memory/2172-1-0x0000000077D40000-0x0000000077D42000-memory.dmp

Filesize
8KB

Download
memory/2172-2-0x0000000000BE1000-0x0000000000BF8000-memory.dmp

Filesize
92KB

Download
memory/2172-3-0x0000000000BE0000-0x0000000001275000-memory.dmp

Filesize
6.6MB

Download
memory/2172-4-0x0000000000BE0000-0x0000000001275000-memory.dmp

Filesize
6.6MB

Download