stealc | 945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 02:49

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General

Target

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe
Size

1.7MB
MD5

685f2f3ccfb3958f91e4b8e865cd28d5
SHA1

4f9a41e63353f568e1aa31dc9ed97e13c5804d22
SHA256

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4
SHA512

558832974a3b971ba2fedd7b8ef4c0e579fe49ea54dba5109335cc53752d8d7a3eea51c9af133f0f19482a3ec8eac8b1f621532280212fbeabae0e9713148d7b
SSDEEP

49152:iG0Mv/7Fzc/5RqGKySgGfUx6DRLb8RydoGhjCg7IPb:iTM37VmmGdGS6NLbeydDjLkP

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

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.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

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.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

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

pid process

2092 945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

pid	process
2092	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.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

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

pid process

2092 945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

pid	process
2092	945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe

C:\Users\Admin\AppData\Local\Temp\945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.exe
"C:\Users\Admin\AppData\Local\Temp\945f5a2a5fe604802e4aadaa8ef136a11c9a0b89d1c8eff471cf2ddf355aefd4.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:2092

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/2092-0-0x0000000000E90000-0x0000000001539000-memory.dmp

Filesize
6.7MB

Download
memory/2092-1-0x0000000077620000-0x0000000077622000-memory.dmp

Filesize
8KB

Download
memory/2092-2-0x0000000000E91000-0x0000000000EA8000-memory.dmp

Filesize
92KB

Download
memory/2092-3-0x0000000000E90000-0x0000000001539000-memory.dmp

Filesize
6.7MB

Download
memory/2092-4-0x0000000000E90000-0x0000000001539000-memory.dmp

Filesize
6.7MB

Download