stealc | f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4

Analysis

max time kernel
95s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 08:55

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General

Target

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe
Size

1.7MB
MD5

1fb763b01e1ffa3ab02b53ce4b2a88fd
SHA1

881d6869788ced3bb3be507abea78f569af3775e
SHA256

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4
SHA512

c714e1043a8a0121ff30ba80a19fd11a61dab6494f760474e433487a21eeec8fcf5af56b3514e00723d348538920d94ff57edd8ba7b75308ae490c4bc4c54023
SSDEEP

49152:o4nWwEYIzjyQPfn/n6+iAUtcyZX8kpTelD48i:oWkqif/n6DADAskTSDRi

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

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.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

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.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

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

pid process

3460 f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.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

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

pid	process
3460	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe
3460	f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe

C:\Users\Admin\AppData\Local\Temp\f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.exe
"C:\Users\Admin\AppData\Local\Temp\f98936eaa24f4c5b0339ad375b53e45e505c9c65cef4480cff417157252f77b4.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:3460

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/3460-0-0x0000000000110000-0x00000000007AD000-memory.dmp

Filesize
6.6MB

Download
memory/3460-1-0x0000000077EC4000-0x0000000077EC6000-memory.dmp

Filesize
8KB

Download
memory/3460-2-0x0000000000111000-0x0000000000128000-memory.dmp

Filesize
92KB

Download
memory/3460-3-0x0000000000110000-0x00000000007AD000-memory.dmp

Filesize
6.6MB

Download
memory/3460-5-0x0000000000110000-0x00000000007AD000-memory.dmp

Filesize
6.6MB

Download