stealc | f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23/11/2024, 14:22

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General

Target

f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe
Size

1.7MB
MD5

85f87f31dfaab8a5767a27c0f6afa7ba
SHA1

da5f5d3ab58480a523d00bd5274e84313dc2bf5f
SHA256

f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084
SHA512

277a85076d87c22589ddfb08bc89b3ec0bd17712b4edca126b40a3020ebf45ccd011aefa8c4cb283885986801c1b03e782db182ec00f43438a52128d8d1320bf
SSDEEP

49152:xKh2xSJVBAPuiOyMdUeIPJHNU5Z1+tMuuUWIWZ:xKbYPuiOTdUeKJtUf1+PuUs

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.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	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1700	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.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	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1700	f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe

C:\Users\Admin\AppData\Local\Temp\f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.exe
"C:\Users\Admin\AppData\Local\Temp\f0331d5af6ee81b4ae9638aa5b67e1a722ddd5b3f6a26ebb6fc516556b599084.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:1700

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/1700-0-0x0000000000870000-0x0000000000F0D000-memory.dmp

Filesize
6.6MB

Download
memory/1700-1-0x0000000077400000-0x0000000077402000-memory.dmp

Filesize
8KB

Download
memory/1700-2-0x0000000000871000-0x0000000000888000-memory.dmp

Filesize
92KB

Download
memory/1700-3-0x0000000000870000-0x0000000000F0D000-memory.dmp

Filesize
6.6MB

Download
memory/1700-4-0x0000000000870000-0x0000000000F0D000-memory.dmp

Filesize
6.6MB

Download