stealc | b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c

Analysis

max time kernel
137s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 03:42

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General

Target

b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe
Size

2.0MB
MD5

86f793173f02f6c3e82962700f9d0393
SHA1

6f31095841204037ef18db8dc314037cd41eea6e
SHA256

b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c
SHA512

94cc0b09d70ddec5bf74eee5ba89a06a90610c7c949a76a08e3464a9082db180365b094e81de3705157584f138b803b0eb61102cd5cf435186d16eab5cce84b2
SSDEEP

49152:7yaQhWLVFDJik5s432FpEqi6kgplfhVtzemFD1xN12:uaioVlJiAs4Mpoc3pVjL

Score

10^/10

stealc tale discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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__	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.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	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1796	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.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	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1796	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe
1796	b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe

C:\Users\Admin\AppData\Local\Temp\b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.exe
"C:\Users\Admin\AppData\Local\Temp\b81182e20f0c54c1b903045a3d0bf63f58942ea66e70c4a9516c8338ecdae03c.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:1796

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/1796-0-0x00000000004C0000-0x0000000000BEC000-memory.dmp

Filesize
7.2MB

Download
memory/1796-1-0x0000000077804000-0x0000000077806000-memory.dmp

Filesize
8KB

Download
memory/1796-2-0x00000000004C1000-0x0000000000529000-memory.dmp

Filesize
416KB

Download
memory/1796-3-0x00000000004C0000-0x0000000000BEC000-memory.dmp

Filesize
7.2MB

Download
memory/1796-5-0x00000000004C0000-0x0000000000BEC000-memory.dmp

Filesize
7.2MB

Download