stealc | 37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258

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
20-11-2024 02:30

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General

Target

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe
Size

1.7MB
MD5

3d3ba378bfd3cec1aed3867dada094f8
SHA1

6821b812edf15bf748914b8b0a0da63da43306ca
SHA256

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258
SHA512

79166f423454a71461a7d568ac9e462ab947f7bc4bc45783e11dc04460b97308426a3ce806d2f5185f9605534aca1c82cdbbb73fc0ed57df98f02b61c6a96984
SSDEEP

24576:cb2TJuk5Xe3XQaPv1uNMJGOoC5OejULeTewZwqdzHHPf1v83ca/sozLqDRG:RQAXAZPvEVOoC0eDP3zPfZ83vzLo

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:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.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:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.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:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

pid process

2776 37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

pid	process
2776	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.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:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

pid process

2776 37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

pid	process
2776	37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe

C:\Users\Admin\AppData\Local\Temp\37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.exe
"C:\Users\Admin\AppData\Local\Temp\37e7ad79d3ae5ed757ce28561bf2111f0ac264c2f862c41085e516fa1f867258.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:2776

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/2776-0-0x00000000008F0000-0x0000000000F75000-memory.dmp

Filesize
6.5MB

Download
memory/2776-1-0x00000000775D0000-0x00000000775D2000-memory.dmp

Filesize
8KB

Download
memory/2776-2-0x00000000008F1000-0x0000000000908000-memory.dmp

Filesize
92KB

Download
memory/2776-3-0x00000000008F0000-0x0000000000F75000-memory.dmp

Filesize
6.5MB

Download
memory/2776-4-0x00000000008F0000-0x0000000000F75000-memory.dmp

Filesize
6.5MB

Download