stealc | 136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd

Analysis

max time kernel
15s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 02:07

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General

Target

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe
Size

1.7MB
MD5

d90a0fa7d1b136c6aaa035f6bc5602fa
SHA1

1e236ca8b781f344a4738c1810b3c819ec72fac5
SHA256

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd
SHA512

161375c3c6d2abea6d3697fe79832c1928cefd2529e222f444f057ffa282eed8e7780c683a64903f16732022f0629c26826abab4ceacf9b78cbaaaf3d805e67a
SSDEEP

49152:toBu4wjPsAgeUE+SERjvwfG1SxNGtvloF:+egJvOGkbKloF

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:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.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:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.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:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

pid process

2604 136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

pid	process
2604	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.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:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

pid process

2604 136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

pid	process
2604	136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe

C:\Users\Admin\AppData\Local\Temp\136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.exe
"C:\Users\Admin\AppData\Local\Temp\136dfe4a8f2801c7836bb2518b2eb57142e57efb77a665830a00335fdfe0c2bd.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:2604

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/2604-0-0x0000000000E60000-0x00000000014FA000-memory.dmp

Filesize
6.6MB

Download
memory/2604-1-0x00000000770D0000-0x00000000770D2000-memory.dmp

Filesize
8KB

Download
memory/2604-2-0x0000000000E61000-0x0000000000E78000-memory.dmp

Filesize
92KB

Download
memory/2604-3-0x0000000000E60000-0x00000000014FA000-memory.dmp

Filesize
6.6MB

Download
memory/2604-4-0x0000000000E60000-0x00000000014FA000-memory.dmp

Filesize
6.6MB

Download