stealc | f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 01:41

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General

Target

f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe
Size

2.9MB
MD5

33e21757c66d40d3dc94d24ded6840a1
SHA1

8500808931bea3a20659e43c9398cfb948db9e6c
SHA256

f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a
SHA512

72c49e886cbeee046b5f6a035725ebf58f4dd924047d9fde876c1e2ff84d97d57ebcc061aff55be287d6fc6305a0694ebf1438cf1290b4a511fc5543fe30b168
SSDEEP

49152:UKks3TOJjbiQDqW9q/uoc+uRT9/BJgpi8MVNiq3e/:U83T+jbiQDH9LDN9Api8M7iq3e/

Score

10^/10

stealc dear discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

dear

http://185.215.113.103

Attributes

url_path
/e2b1563c6670f193.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer 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__	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.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	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1856	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.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	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1856	f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe

C:\Users\Admin\AppData\Local\Temp\f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.exe
"C:\Users\Admin\AppData\Local\Temp\f191cc28ee681ea36c73780f422739493d6e8db494c07534a9ea2a688b02595a.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:1856

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/1856-0-0x00000000013D0000-0x00000000018DE000-memory.dmp

Filesize
5.1MB

Download
memory/1856-1-0x0000000077050000-0x0000000077052000-memory.dmp

Filesize
8KB

Download
memory/1856-2-0x00000000013D1000-0x00000000013E5000-memory.dmp

Filesize
80KB

Download
memory/1856-3-0x00000000013D0000-0x00000000018DE000-memory.dmp

Filesize
5.1MB

Download
memory/1856-4-0x00000000013D0000-0x00000000018DE000-memory.dmp

Filesize
5.1MB

Download