stealc | 3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969

Analysis

max time kernel
138s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 02:15

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General

Target

3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe
Size

2.0MB
MD5

e9e08496a40c5a11165101ac24017cba
SHA1

71a1821737417c3b3cf665361203532893413e61
SHA256

3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969
SHA512

4e7170f6952f05b9f49e330f60454351b39fc4ed425f3ca5b3f957b1c8fd657e9b2e52c3ddae16893eaf69da6a56a1979e45b74797bcd1b46fd1c2e231ab7883
SSDEEP

49152:O/oAL2TPzCrmYAr9nwiihSG77c7lL3yMqk132U0rzm1Fktj:ELizCrmYA1wiihR7alTf32U0rSFk

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__	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.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	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2724	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.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	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2724	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe
2724	3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe

C:\Users\Admin\AppData\Local\Temp\3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.exe
"C:\Users\Admin\AppData\Local\Temp\3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969.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:2724

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/2724-0-0x00000000009D0000-0x00000000010EA000-memory.dmp

Filesize
7.1MB

Download
memory/2724-1-0x0000000077034000-0x0000000077036000-memory.dmp

Filesize
8KB

Download
memory/2724-2-0x00000000009D1000-0x0000000000A39000-memory.dmp

Filesize
416KB

Download
memory/2724-3-0x00000000009D0000-0x00000000010EA000-memory.dmp

Filesize
7.1MB

Download
memory/2724-4-0x00000000009D0000-0x00000000010EA000-memory.dmp

Filesize
7.1MB

Download