stealc | 77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 03:31

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General

Target

77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe
Size

1.7MB
MD5

4966c47250d6502613e172a54168825c
SHA1

d1261d0564eaf1011599b7d4ccced492f3163a9d
SHA256

77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083
SHA512

6412f6cadd9eba8a0003fae2ada492036b4c0058223b5f14af5f530a903512f75cca485869fad6f67ef31e5cd337821e7d6f9634c07fc47f7d4adfc32f018252
SSDEEP

49152:+9/P5OZX2PEq6lcwv4dSIar+MjAGZzEg1SL4Gy:yEp2PEjlci4AIar+mAGZ31SUG

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__	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.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	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
276	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.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	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
276	77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe

C:\Users\Admin\AppData\Local\Temp\77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.exe
"C:\Users\Admin\AppData\Local\Temp\77231d29e79ea154dbf43765d0f2daa4c3c149a374ce95e52c3a8121243b8083.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:276

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/276-0-0x0000000000150000-0x00000000007D5000-memory.dmp

Filesize
6.5MB

Download
memory/276-1-0x0000000077410000-0x0000000077412000-memory.dmp

Filesize
8KB

Download
memory/276-3-0x0000000000150000-0x00000000007D5000-memory.dmp

Filesize
6.5MB

Download
memory/276-2-0x0000000000151000-0x0000000000168000-memory.dmp

Filesize
92KB

Download
memory/276-4-0x0000000000150000-0x00000000007D5000-memory.dmp

Filesize
6.5MB

Download