stealc | c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df

Analysis

max time kernel
90s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 16:11

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General

Target

c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe
Size

2.8MB
MD5

604967451394740aaf0303923e2593b2
SHA1

813bee19e6129aba4bfe24d4e73edb0730c12cf9
SHA256

c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df
SHA512

3aa6e6ebbff77482a25985d4b05a3103637cce4c525a1aeeae33e68f2ded76dbea6bf8ca0775179a52162496ad6111cf496392fe2547b909cf9d234be6383c6c
SSDEEP

49152:/B19Pwsv5S3InbHJlSfI59toScFpV3mSbGp1SsPxMtL:/B19PwsBS4brBho5pUcCSGx+L

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__	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.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\VideoBiosVersion	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.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	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1440	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.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	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1440	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe
1440	c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe

C:\Users\Admin\AppData\Local\Temp\c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.exe
"C:\Users\Admin\AppData\Local\Temp\c62fd06fb157e3a4ddf3532be110f88ee8fc51becd47f9e20e310eecda7f12df.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:1440

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/1440-0-0x0000000000070000-0x0000000000578000-memory.dmp

Filesize
5.0MB

Download
memory/1440-1-0x0000000077174000-0x0000000077176000-memory.dmp

Filesize
8KB

Download
memory/1440-2-0x0000000000071000-0x0000000000088000-memory.dmp

Filesize
92KB

Download
memory/1440-3-0x0000000000070000-0x0000000000578000-memory.dmp

Filesize
5.0MB

Download
memory/1440-4-0x0000000000070000-0x0000000000578000-memory.dmp

Filesize
5.0MB

Download