stealc | c1de15b5d043dd79dd267dd5f6d8f3ea9e15bc8a2ab63cb5fb4080cb4804c18e

Analysis

max time kernel
122s
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

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe
Size

2.1MB
MD5

82ffb0d94c7f912b03d1feee6f614605
SHA1

f84ef7a098210160537648584909d6cd4f7cb6cb
SHA256

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1
SHA512

1cd4548cc0f382b76436d772bbf6a82f16cba6e11cd4d528e3defb5da735ea33ffe1220edbeefd409ca6b0f0b16cece159d020b1f06f6338b273ab420ccc30d5
SSDEEP

49152:n/oG96mPxsramN2DHWNJtFZkJalxLKxndQzkD8wdHTXz5E1ZLoJZA5:ngBrrN2KNvFKJa7KxKgD1HZgZLyg

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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2824 cmd.exe

pid	process
2824	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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

Loads dropped DLL 1 IoCs

Processes:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

pid process

1660 1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

pid process

1660 1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.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:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2584 timeout.exe

pid	process
2584	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

pid	process
1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe
1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.execmd.exe

description	pid	process	target process
PID 1660 wrote to memory of 2824	1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe	cmd.exe
PID 1660 wrote to memory of 2824	1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe	cmd.exe
PID 1660 wrote to memory of 2824	1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe	cmd.exe
PID 1660 wrote to memory of 2824	1660	1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe	cmd.exe
PID 2824 wrote to memory of 2584	2824	cmd.exe	timeout.exe
PID 2824 wrote to memory of 2584	2824	cmd.exe	timeout.exe
PID 2824 wrote to memory of 2584	2824	cmd.exe	timeout.exe
PID 2824 wrote to memory of 2584	2824	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe
"C:\Users\Admin\AppData\Local\Temp\1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.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:1660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2584

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/1660-0-0x0000000000FD0000-0x0000000001714000-memory.dmp

Filesize
7.3MB

Download
memory/1660-1-0x0000000077680000-0x0000000077682000-memory.dmp

Filesize
8KB

Download
memory/1660-3-0x0000000000FD0000-0x0000000001714000-memory.dmp

Filesize
7.3MB

Download
memory/1660-2-0x0000000000FD1000-0x0000000001039000-memory.dmp

Filesize
416KB

Download
memory/1660-8-0x0000000000FD0000-0x0000000001714000-memory.dmp

Filesize
7.3MB

Download