stealc | 31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1

Analysis

max time kernel
96s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-12-2024 18:37

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General

Target

31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe
Size

1.7MB
MD5

3a76ab70c01da0f818f89bfe4e904ee3
SHA1

c0ebf4afaae2542f315c72853aaaab84e1a59874
SHA256

31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1
SHA512

06ad07e86e5a896768792c77197f0029489f81d55c71874d94f5f718a3cf55bc3f2740e0f43479deea3fae49ce1adf5baf5b03227162fb827303af2c14c0a867
SSDEEP

24576:3/W9aHhoKroal0+5Z+WRmxF+KsRp8JPsFJnqvNqChsjTrQQ5NOVRCiS/us1z1FzT:3ugHhoMzN5cWvqVsSvACyjnQQ5NOPq

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__	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.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	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4944	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.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	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4944	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe
4944	31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe

C:\Users\Admin\AppData\Local\Temp\31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.exe
"C:\Users\Admin\AppData\Local\Temp\31fa2d30829b1edde94cc00cac6af01bf9075cb7dba356301566624f586aa2c1.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:4944

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/4944-0-0x0000000000760000-0x0000000000E06000-memory.dmp

Filesize
6.6MB

Download
memory/4944-1-0x0000000077154000-0x0000000077156000-memory.dmp

Filesize
8KB

Download
memory/4944-2-0x0000000000761000-0x0000000000778000-memory.dmp

Filesize
92KB

Download
memory/4944-3-0x0000000000760000-0x0000000000E06000-memory.dmp

Filesize
6.6MB

Download
memory/4944-4-0x0000000000760000-0x0000000000E06000-memory.dmp

Filesize
6.6MB

Download