stealc | 509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab

General

Target
509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe
Size 366KB
Sample240613-d99qzatamd
SHA256 509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab
MD5 6e67e88bc4441dc8ad85c295c498ef35
SHA1 f5712690cf7d55f2454ca9ec6420891dc9446a27
SHA512 fe33a751a186ae4c77285e58fff483cde899fbb4383bcf5fe8401f927e8a1db9472b002973865d4f9879258312a7aa78333d03fb557cabb300fb418f9103ac82
SSDEEP 3072:y+QoQFLmhQC35gphRvyb8IZUGnQyvxaLPAnR4KIzpm/a7MAlxoB/8FW0hWyhHKe+:y+Qo0LmhQESRvy6avsFKtKYmFWzyse+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/memve4erin
https://steamcommunity.com/profiles/76561199699680841

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/4320-2-0x0000000001D30000-0x0000000001D65000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-3-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-4-0x0000000000400000-0x0000000001BD7000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-6-0x0000000000400000-0x0000000001BD7000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-7-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-9-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4320-8-0x0000000000400000-0x0000000001BD7000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.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
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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2576	4320	WerFault.exe	79

Checks processor information in registry 2 TTPs 1 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2148	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4320	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe
4320	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4320 wrote to memory of 4980	4320	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe	81
PID 4320 wrote to memory of 4980	4320	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe	81
PID 4320 wrote to memory of 4980	4320	509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe	81
PID 4980 wrote to memory of 2148	4980	cmd.exe	85
PID 4980 wrote to memory of 2148	4980	cmd.exe	85
PID 4980 wrote to memory of 2148	4980	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe
"C:\Users\Admin\AppData\Local\Temp\509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe"
1⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\509a489cc945bbe4dd1f78f5835d443aa437f1a3e582a9716dce0cacf75588ab.exe" & rd /s /q "C:\ProgramData\AKFHDBFIDAEC" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 10
    3⤵
    - Delays execution with timeout.exe
    PID:2148
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4320 -s 1668
  2⤵
  - Program crash
  PID:2576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4320 -ip 4320
1⤵
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/4320-1-0x0000000001EB0000-0x0000000001FB0000-memory.dmp

Download

memory/4320-2-0x0000000001D30000-0x0000000001D65000-memory.dmp

Download

memory/4320-3-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4320-4-0x0000000000400000-0x0000000001BD7000-memory.dmp

Download

memory/4320-5-0x0000000001EB0000-0x0000000001FB0000-memory.dmp

Download

memory/4320-6-0x0000000000400000-0x0000000001BD7000-memory.dmp

Download

memory/4320-7-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4320-9-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4320-8-0x0000000000400000-0x0000000001BD7000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads