stealc | f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634

Analysis

max time kernel
135s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-11-2024 16:52

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General

Target

f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe
Size

2.0MB
MD5

4ad838d33cbcc589a2cfe7b88b83a906
SHA1

c40f76622aecee12aa9473c95f330efb89c4bd47
SHA256

f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634
SHA512

65fc275e8651e17833b3672792cc1716801b08e84448c3fdb7a152d0bdb8cda626fa9398475c4d863ead4dd4a46ba295d5f84e758a0171099aaeee7f91c3bf11
SSDEEP

49152:tVUU6shvFK0gb/0bVoymLczAPv85Z0181X6myC:twshtM/UmiF5Z48wrC

Score

10^/10

stealc tale discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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__	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.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	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1748	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.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	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1748	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe
1748	f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe

C:\Users\Admin\AppData\Local\Temp\f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.exe
"C:\Users\Admin\AppData\Local\Temp\f4877ae52d445d968d573c3329181ea34c95fbe77f1acc6ee4cf0d1d25378634.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:1748

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/1748-0-0x0000000000A10000-0x0000000001143000-memory.dmp

Filesize
7.2MB

Download
memory/1748-1-0x0000000077694000-0x0000000077696000-memory.dmp

Filesize
8KB

Download
memory/1748-2-0x0000000000A11000-0x0000000000A79000-memory.dmp

Filesize
416KB

Download
memory/1748-3-0x0000000000A10000-0x0000000001143000-memory.dmp

Filesize
7.2MB

Download
memory/1748-5-0x0000000000A10000-0x0000000001143000-memory.dmp

Filesize
7.2MB

Download