stealc | c1de15b5d043dd79dd267dd5f6d8f3ea9e15bc8a2ab63cb5fb4080cb4804c18e

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 18:12

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General

Target

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Size

2.0MB
MD5

8dec1786c8e709701d60fdd14c78ba23
SHA1

e3496e09e22571195377f9c3e8a55c4b31496b86
SHA256

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f
SHA512

4892ea3642325dfb7b49b0c5caa731b9db8b5f37e28ea21d58975be672bb268a5565b60c1b5dcaf1b3c240c61c5eaf92a8983da62bc05a0c43c08536cc809bc3
SSDEEP

49152:6Ig8rFJgWA1FOigKan2Ze5uunv4ne+vXb4SPESLs9e7P/:k8rF2AKa0g4ne+vTLJ7P/

Score

10^/10

stealc tale credential_access discovery evasion spyware 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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2856 cmd.exe

pid	process
2856	cmd.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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

Loads dropped DLL 1 IoCs

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

pid process

3036 820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

pid process

3036 820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2828 timeout.exe

pid	process
2828	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

pid	process
3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.execmd.exe

description	pid	process	target process
PID 3036 wrote to memory of 2856	3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe	cmd.exe
PID 3036 wrote to memory of 2856	3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe	cmd.exe
PID 3036 wrote to memory of 2856	3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe	cmd.exe
PID 3036 wrote to memory of 2856	3036	820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe	cmd.exe
PID 2856 wrote to memory of 2828	2856	cmd.exe	timeout.exe
PID 2856 wrote to memory of 2828	2856	cmd.exe	timeout.exe
PID 2856 wrote to memory of 2828	2856	cmd.exe	timeout.exe
PID 2856 wrote to memory of 2828	2856	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe
"C:\Users\Admin\AppData\Local\Temp\820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\820a177b585f0a50c430e1b2ac66467cda0d96eb80b8e39ddf23079c8f2c685f.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\chrome.dll

Filesize
676KB

MD5
eda18948a989176f4eebb175ce806255

SHA1
ff22a3d5f5fb705137f233c36622c79eab995897

SHA256
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

SHA512
160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

Download Submit
memory/3036-1-0x0000000077A30000-0x0000000077A32000-memory.dmp

Filesize
8KB

Download
memory/3036-0-0x0000000001290000-0x00000000019C9000-memory.dmp

Filesize
7.2MB

Download
memory/3036-2-0x0000000001291000-0x00000000012F9000-memory.dmp

Filesize
416KB

Download
memory/3036-3-0x0000000001290000-0x00000000019C9000-memory.dmp

Filesize
7.2MB

Download
memory/3036-8-0x0000000001290000-0x00000000019C9000-memory.dmp

Filesize
7.2MB

Download