stealc | 31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 18:27

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General

Target

31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe
Size

1.7MB
MD5

b1389ec87bad100fad616612b0f8850c
SHA1

2893314486cb66c4454a83f21be67c536dcf0822
SHA256

31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b
SHA512

cc16a98f23a91a30cf8042000c5db986c24c20b6cb72faebe94728815f73fa6c12a6a5f0625773a0f2aa46b08736fb4b4ef083192dc94e49fefcbcab3cc9e040
SSDEEP

49152:5pNSqStTSmF9Uyhivtt0v2aMjYek+ntf01+JP++cL:PcqHARhivtav2aMjYepn+1QP++

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__	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.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	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1608	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.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	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1608	31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe

C:\Users\Admin\AppData\Local\Temp\31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.exe
"C:\Users\Admin\AppData\Local\Temp\31b4f87080ce3e4bb1425ac640fdf884e0c54f27992177d9006174c9a662673b.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:1608

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/1608-0-0x0000000000230000-0x00000000008C7000-memory.dmp

Filesize
6.6MB

Download
memory/1608-1-0x0000000077C60000-0x0000000077C62000-memory.dmp

Filesize
8KB

Download
memory/1608-2-0x0000000000231000-0x0000000000248000-memory.dmp

Filesize
92KB

Download
memory/1608-3-0x0000000000230000-0x00000000008C7000-memory.dmp

Filesize
6.6MB

Download
memory/1608-4-0x0000000000230000-0x00000000008C7000-memory.dmp

Filesize
6.6MB

Download