stealc | cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 03:03

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General

Target

cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe
Size

1.8MB
MD5

11bf0c70ccd9edaaa470be5b5a6b05c6
SHA1

bdcda48fb20caf28a9285bf5bb5d1d10c4540b55
SHA256

cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c
SHA512

a8c3c7fc7550dff1558caceae2c32e5b4895ae2ba855c3c9483567af9be77b1e17ec6b35cb596c053a129464cb58821cf00d4f3b62fe1ee99b21f06f5b0f550a
SSDEEP

49152:+5vprFc/oc0bZ1I3v1NPbZA8toml1but/:EEdf3lDFl1bk

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__	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.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	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3108	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.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	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3108	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe
3108	cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe

C:\Users\Admin\AppData\Local\Temp\cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.exe
"C:\Users\Admin\AppData\Local\Temp\cefd403d738a98aacd4c0bcbcfd8bd16af6da5e9fd6bb371b183270724745b4c.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:3108

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/3108-0-0x0000000000960000-0x0000000001011000-memory.dmp

Filesize
6.7MB

Download
memory/3108-1-0x00000000778B4000-0x00000000778B6000-memory.dmp

Filesize
8KB

Download
memory/3108-2-0x0000000000961000-0x0000000000978000-memory.dmp

Filesize
92KB

Download
memory/3108-3-0x0000000000960000-0x0000000001011000-memory.dmp

Filesize
6.7MB

Download
memory/3108-4-0x0000000000960000-0x0000000001011000-memory.dmp

Filesize
6.7MB

Download