stealc | b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2025 07:36

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General

Target

b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe
Size

5.0MB
MD5

bcc42307c534754275cf097c29c75242
SHA1

94bbeb39b9912182071d61b0645f45939baa4e8b
SHA256

b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e
SHA512

4e7530fd2b362221dc19e1eafcea5713e2870e235d8a217e8130136808e8c8198f6fb8105586c64b9f45523de2dfb38908cda34ceeaca1db5f849fdc8f433007
SSDEEP

49152:hEOc/i01yKCNg48nqW3bB7JH3+MVFfTP0pU3Va9:hHc/5YK8ByqWLB7JH9j78X

Score

10^/10

stealc stok defense_evasion discovery 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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.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	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2340	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.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	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2340	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe
2340	b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe

C:\Users\Admin\AppData\Local\Temp\b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.exe
"C:\Users\Admin\AppData\Local\Temp\b737427a357c92a53fbea6290fdc2bf008218f45ce637fba8ca958fb062c780e.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:2340

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/2340-0-0x0000000000A30000-0x0000000000F30000-memory.dmp

Filesize
5.0MB

Download
memory/2340-1-0x00000000773E4000-0x00000000773E6000-memory.dmp

Filesize
8KB

Download
memory/2340-2-0x0000000000A31000-0x0000000000C7A000-memory.dmp

Filesize
2.3MB

Download
memory/2340-4-0x0000000000A30000-0x0000000000F30000-memory.dmp

Filesize
5.0MB

Download
memory/2340-5-0x0000000000A31000-0x0000000000C7A000-memory.dmp

Filesize
2.3MB

Download