stealc | b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18/12/2024, 09:31

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General

Target

b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe
Size

1.7MB
MD5

bc0ace9d945357220fef401b92e1b450
SHA1

e759f68d1448d77e8b7b671a8872e7a9fa422a13
SHA256

b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340
SHA512

1b29d5ee525bedf3435fd3594c1c04485bd1c728731ccc1ca09fbaa03acde8a943cbd3a9939b50395b5ec137f233ce6561630fd8111524d268adb086fe7fa927
SSDEEP

24576:6GITJNPOj30QlodVMSG1cm7erUlj9Ros6Kz52FWRbr/ICp/yMLjiigjELHGHYbCV:6du3GCSG1PXlj9f6024RbrXSjELHGHw

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__	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.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	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1140	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.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	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1140	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe
1140	b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe

C:\Users\Admin\AppData\Local\Temp\b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.exe
"C:\Users\Admin\AppData\Local\Temp\b9ad4057bfc1fe97166722cf3d1956726d085fb3cb7d846f51dd61f2a17f6340N.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:1140

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/1140-0-0x00000000002B0000-0x0000000000950000-memory.dmp

Filesize
6.6MB

Download
memory/1140-2-0x00000000002B1000-0x00000000002C8000-memory.dmp

Filesize
92KB

Download
memory/1140-3-0x00000000002B0000-0x0000000000950000-memory.dmp

Filesize
6.6MB

Download
memory/1140-1-0x0000000076F04000-0x0000000076F06000-memory.dmp

Filesize
8KB

Download
memory/1140-5-0x00000000002B0000-0x0000000000950000-memory.dmp

Filesize
6.6MB

Download