stealc | c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f

Analysis

max time kernel
148s
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
17-12-2024 06:57

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General

Target

c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe
Size

2.7MB
MD5

5e125d20b22d08cee52f2b9f8c4c6716
SHA1

fb42948104df486d0fe6d0543dbcce06ac791844
SHA256

c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f
SHA512

e53611652cd73f59bd7afd28d7d910191461b66baae1f4ee5fcec4c2267248ec9986dcf04a80f023d9cf39b5f71d1c48fb3172fbdff5258233382a1b0b0f1a15
SSDEEP

49152:XuAwxK+mQRzvDOySWYdn737gBh0InSad4OeNVI:eHTmQRzvDOySWYd73Y0InSad4O/

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__	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.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	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4440	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.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	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4440	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe
4440	c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe

C:\Users\Admin\AppData\Local\Temp\c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.exe
"C:\Users\Admin\AppData\Local\Temp\c21ac077f9867d18971c24f8e616ddff0470725707b74f6694ee2b1c2893d96f.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:4440

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/4440-0-0x0000000000640000-0x0000000000B33000-memory.dmp

Filesize
4.9MB

Download
memory/4440-1-0x0000000077B74000-0x0000000077B76000-memory.dmp

Filesize
8KB

Download
memory/4440-2-0x0000000000641000-0x0000000000658000-memory.dmp

Filesize
92KB

Download
memory/4440-3-0x0000000000640000-0x0000000000B33000-memory.dmp

Filesize
4.9MB

Download
memory/4440-4-0x0000000000640000-0x0000000000B33000-memory.dmp

Filesize
4.9MB

Download