stealc | 6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
09-11-2024 19:32

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General

Target

file.exe
Size

2.0MB
MD5

1eaa5775a1249b88fe38b16e03c1f79f
SHA1

16f6fc4941ebbece1d8fd40b4300da31675d497c
SHA256

6b8fa00a8bde6feb8e78b866950f14f6388c07f267c66b1e5dc2b8e399c21c9a
SHA512

49c8ba781b43c38de9ee3906fa8d69d642ca3a64050fa219193f4f859d982b6ef9a1c20e96cb80be505cc1b5a9351cd9588b5015c82fdf4e910197a0339bb09d
SSDEEP

49152:uperXvdkKFuegDPYSfJ/vIMMMk3M9AZWbb16ZxMXp+bvExcNr:9XlkILUnIdDEbsm+bjNr

Score

10^/10

stealc tale discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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__	file.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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	file.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3060	file.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3016	3060	WerFault.exe	29

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	file.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3060	file.exe
3060	file.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 3016	3060	file.exe	32
PID 3060 wrote to memory of 3016	3060	file.exe	32
PID 3060 wrote to memory of 3016	3060	file.exe	32
PID 3060 wrote to memory of 3016	3060	file.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3060 -s 796
  2⤵
  - Program crash
  PID:3016

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

Replay Monitor

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Downloads

memory/3060-0-0x00000000002A0000-0x00000000009C2000-memory.dmp

Filesize
7.1MB

Download
memory/3060-1-0x0000000077BF0000-0x0000000077BF2000-memory.dmp

Filesize
8KB

Download
memory/3060-3-0x00000000002A0000-0x00000000009C2000-memory.dmp

Filesize
7.1MB

Download
memory/3060-2-0x00000000002A1000-0x0000000000309000-memory.dmp

Filesize
416KB

Download
memory/3060-4-0x00000000002A0000-0x00000000009C2000-memory.dmp

Filesize
7.1MB

Download