stealc | cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 11:20

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General

Target

cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe
Size

1.7MB
MD5

3d825663fbbbf51bb81cf21b672a7f83
SHA1

9a04e85cf1635389eeff3bc0ea049d5d03412199
SHA256

cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea
SHA512

b15c40a1fa36a228c19dc59bf9b1fdf9a528fba7bc400b51b29b7d32a0698bdcd1d1b72c7f5f86348f92bc15021f78cbdb32e732b678c639a58cf0fbb06b7ccb
SSDEEP

24576:v6ebSQWi3ZV1U2I4pqoyac0R9asd3AYr+IMhfJvvbqUM2Yj5IoPY4OrAgjlzA9Ok:BUmZV1bpqoq1MAYWFb5M2yLYjrxlzm

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.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\VideoBiosVersion	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1028	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.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	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1028	cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe

C:\Users\Admin\AppData\Local\Temp\cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.exe
"C:\Users\Admin\AppData\Local\Temp\cbb5bcbeefdd8fc1c9b2ad9da9a57acb6fb0bfb9977ab45ac2de1d0af5775fea.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:1028

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/1028-0-0x00000000010B0000-0x0000000001755000-memory.dmp

Filesize
6.6MB

Download
memory/1028-1-0x0000000077AD0000-0x0000000077AD2000-memory.dmp

Filesize
8KB

Download
memory/1028-2-0x00000000010B1000-0x00000000010C8000-memory.dmp

Filesize
92KB

Download
memory/1028-3-0x00000000010B0000-0x0000000001755000-memory.dmp

Filesize
6.6MB

Download
memory/1028-5-0x00000000010B0000-0x0000000001755000-memory.dmp

Filesize
6.6MB

Download