stealc | 1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b

Analysis

max time kernel
95s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 07:03

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General

Target

1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe
Size

1.7MB
MD5

fbb15718b209777529347e0ec3942989
SHA1

5372cc745070bc933621eae67286a24fb148057e
SHA256

1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b
SHA512

6cb8d58793bdd6f7eb1932e6e7928d6d26fb012188faca498354df589db75ebeaf773df86950137a6ddfea7358b90b07c3d4665ced4f13799dc6105786e46206
SSDEEP

24576:I4S0ocJUWAnv8e2GbMa+LE1m8ZhfOJmCJf1NHqLg2678i5/1C2:I4S0ohWAv8e9pO2DZhfg91oL/6Bn

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.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	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.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-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4328	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.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	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4328	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe
4328	1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe

C:\Users\Admin\AppData\Local\Temp\1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.exe
"C:\Users\Admin\AppData\Local\Temp\1cb2daeb6d3d3713b5a5f63f52ededc4fe8fe2c91b18a500bd6728fcdd5bf55b.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:4328

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/4328-0-0x00000000007F0000-0x0000000000E7C000-memory.dmp

Filesize
6.5MB

Download
memory/4328-1-0x00000000773F4000-0x00000000773F6000-memory.dmp

Filesize
8KB

Download
memory/4328-2-0x00000000007F1000-0x0000000000808000-memory.dmp

Filesize
92KB

Download
memory/4328-3-0x00000000007F0000-0x0000000000E7C000-memory.dmp

Filesize
6.5MB

Download
memory/4328-5-0x00000000007F0000-0x0000000000E7C000-memory.dmp

Filesize
6.5MB

Download