stealc | 81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7

Analysis

max time kernel
93s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2024 11:55

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General

Target

81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe
Size

1.7MB
MD5

46ba1f1d7fd0f18ae42ff50221bf0638
SHA1

d30fc2ef95d7ecb8db4ae8460e2e683d856f9c39
SHA256

81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7
SHA512

524902a64a8cff52bb6dc5f7f73717a48a164f41171d59e3caa55c272c8d2d8fdf0c7d92fd366baac5b6cac42d900add71f647221830feefa7b145e83ce5fcbc
SSDEEP

49152:MmpA7+7syjBToHlWWJ5fyqkAn9KHRp0Yz9R9lrz7:MmlmHoWrqhfRp04tv

Score

10^/10

stealc mars discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

mars

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__	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.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	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3292	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.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	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3292	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe
3292	81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe

C:\Users\Admin\AppData\Local\Temp\81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.exe
"C:\Users\Admin\AppData\Local\Temp\81bd54699fc30f8930b3e50b26e2644a69eb7902370f6fcff728ea98b7ac09c7.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:3292

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

Replay Monitor

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Downloads

memory/3292-0-0x0000000000880000-0x0000000000F22000-memory.dmp

Filesize
6.6MB

Download
memory/3292-1-0x00000000771E4000-0x00000000771E6000-memory.dmp

Filesize
8KB

Download
memory/3292-2-0x0000000000881000-0x0000000000898000-memory.dmp

Filesize
92KB

Download
memory/3292-3-0x0000000000880000-0x0000000000F22000-memory.dmp

Filesize
6.6MB

Download
memory/3292-5-0x0000000000880000-0x0000000000F22000-memory.dmp

Filesize
6.6MB

Download