stealc | c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689

Analysis

max time kernel
91s
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
12-12-2024 13:40

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General

Target

c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe
Size

1.7MB
MD5

807a67da4cfbc1cf70de9fecfea9fb09
SHA1

e2c37f774fe4daf510961d6ed7239d8b03d83036
SHA256

c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689
SHA512

65c46a8585e0b87c53d242a18dab0ed9d83c1378347ac0209bf5522b93c34051ae1aa7e0b63829980f1cb156d54bab3060c39152d27ff694a79876aabcd78561
SSDEEP

24576:0UwQa6DjoI2UifkkNV/R/0jR39QE55dKfgM4G5oFjZEiSdfKn0lZxklN6HYRYMYE:Xa4EdWdKB55y1efKKzHYR5YXLp2qK6M

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__	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.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	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.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-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1560	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.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	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1560	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe
1560	c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe

C:\Users\Admin\AppData\Local\Temp\c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.exe
"C:\Users\Admin\AppData\Local\Temp\c85b9fda965fb5d13142b0ef3369e46abbc5f4bfb948fd2179d6d160123c0689.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:1560

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/1560-0-0x0000000000A90000-0x000000000112B000-memory.dmp

Filesize
6.6MB

Download
memory/1560-1-0x0000000077DD4000-0x0000000077DD6000-memory.dmp

Filesize
8KB

Download
memory/1560-2-0x0000000000A91000-0x0000000000AA8000-memory.dmp

Filesize
92KB

Download
memory/1560-3-0x0000000000A90000-0x000000000112B000-memory.dmp

Filesize
6.6MB

Download
memory/1560-5-0x0000000000A90000-0x000000000112B000-memory.dmp

Filesize
6.6MB

Download