stealc | a8addc675fcc27c94ff9e4775bb2e090f4da1287aae6b95cecc65ccf533bc61d

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 14:44

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General

Target

num.exe
Size

868KB
MD5

f793d9e588c6bf51f1daf523ab2df1ce
SHA1

f63ce1f9eee9f3ae643e270c7fc854dc51d730d0
SHA256

a8addc675fcc27c94ff9e4775bb2e090f4da1287aae6b95cecc65ccf533bc61d
SHA512

4d0d8bf366f4b4793154f31aee4983df307b97edc83608b76628168418d48227eb46f6213469eb4d3a088d891a143b30b3b02acbb194df834da1b61d182607eb
SSDEEP

24576:Le1Q/llWMGNL/geFyNcTN+jv75TQn652VBuNyb:cQ/lldGJtF4ch+jvNm0Nyb

Score

10^/10

stealc tale credential_access discovery 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

Deletes itself 1 IoCs

pid	Process
2780	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2956	num.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
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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	num.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	num.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	num.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2752	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2956	num.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 2780	2956	num.exe	31
PID 2956 wrote to memory of 2780	2956	num.exe	31
PID 2956 wrote to memory of 2780	2956	num.exe	31
PID 2956 wrote to memory of 2780	2956	num.exe	31
PID 2780 wrote to memory of 2752	2780	cmd.exe	33
PID 2780 wrote to memory of 2752	2780	cmd.exe	33
PID 2780 wrote to memory of 2752	2780	cmd.exe	33
PID 2780 wrote to memory of 2752	2780	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\num.exe
"C:\Users\Admin\AppData\Local\Temp\num.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\num.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\chrome.dll

Filesize
676KB

MD5
eda18948a989176f4eebb175ce806255

SHA1
ff22a3d5f5fb705137f233c36622c79eab995897

SHA256
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

SHA512
160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

Download Submit
memory/2956-0-0x00000000003A0000-0x000000000068D000-memory.dmp

Filesize
2.9MB

Download
memory/2956-4-0x00000000003A0000-0x000000000068D000-memory.dmp

Filesize
2.9MB

Download