stealc | f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c

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
26-01-2025 19:24

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General

Target

f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe
Size

1.7MB
MD5

2bbde981b3bdc74655574d8b8d7fcdb7
SHA1

37c5568c9a0e74d56639eb9b760d7aedcd7b8fa2
SHA256

f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c
SHA512

1f0192ee442470c6faafcbc6b5daf44a5147c30e07a5e018a0d9392079cdce187208a7a24e85f74fb7faf4d0847096cb36c1db307d846e237026d50999010370
SSDEEP

24576:93OU3w5h6LPhwBC5ipltwwWbva9nTwdO+rjdHhFzyoRZ+xn8d0GxaxdMZtoJ6S:QU3wd/l6w4iiOM2U+xnq+sti

Score

10^/10

stealc stok defense_evasion discovery 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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.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	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
684	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.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	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
684	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe
684	f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe

C:\Users\Admin\AppData\Local\Temp\f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.exe
"C:\Users\Admin\AppData\Local\Temp\f5b05fca08794f227270a0a6cba86a6a6ae33ce47218c2e73ac081859310d65c.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:684

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/684-0-0x0000000000A70000-0x0000000001103000-memory.dmp

Filesize
6.6MB

Download
memory/684-1-0x0000000077254000-0x0000000077256000-memory.dmp

Filesize
8KB

Download
memory/684-2-0x0000000000A71000-0x0000000000A88000-memory.dmp

Filesize
92KB

Download
memory/684-4-0x0000000000A70000-0x0000000001103000-memory.dmp

Filesize
6.6MB

Download
memory/684-5-0x0000000000A70000-0x0000000001103000-memory.dmp

Filesize
6.6MB

Download