stealc | b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 01:46

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General

Target

b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe
Size

1.8MB
MD5

ecfe6cd5aa9bd13675e409d553eb9f73
SHA1

d7c1160b0d610875a77851706024211d4d5b2448
SHA256

b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017
SHA512

ee210784c885784872626bfc960a08390bb21b03579de90a9f56dadfd3d059ec49a5e9249d1237226fbda4b74368b873fae6c8e816c0a48a27d078653e86be2d
SSDEEP

49152:9RiRU+458WmyfjKFBhk6rnbVWrWE1rJMG17XQ+:9YO+2my8zprZG1js+

Score

10^/10

stealc doma discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

doma

http://185.215.113.37

Attributes

url_path
/e2b1563c6670f193.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer 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__	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.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	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2060	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.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	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2060	b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe

C:\Users\Admin\AppData\Local\Temp\b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.exe
"C:\Users\Admin\AppData\Local\Temp\b4a08eb39b56355f798b2c8ddc03a9dbeedbad8e215dda3ec626f4897b0a3017.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:2060

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/2060-0-0x00000000009E0000-0x0000000001081000-memory.dmp

Filesize
6.6MB

Download
memory/2060-1-0x0000000077BB0000-0x0000000077BB2000-memory.dmp

Filesize
8KB

Download
memory/2060-2-0x00000000009E1000-0x0000000000A04000-memory.dmp

Filesize
140KB

Download
memory/2060-3-0x00000000009E0000-0x0000000001081000-memory.dmp

Filesize
6.6MB

Download
memory/2060-4-0x00000000009E0000-0x0000000001081000-memory.dmp

Filesize
6.6MB

Download