stealc | 78297499183ade5301017f837baff3e0c4a5e6562c3918ea532caa23d3847944

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 23:20

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General

Target
c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe
Size 1.9MB
Sample240615-3bwtwsshjn
SHA256 78297499183ade5301017f837baff3e0c4a5e6562c3918ea532caa23d3847944
MD5 c20c7132043488b5b58394c3a8b65060
SHA1 342ea0777384c14dc201df2fbc9274b7db3de9df
SHA512 cdf362b9be57a7f4d938c46024c8ce4cc6590203971e3278417d515d2f9873fccfdccdbdb7157f2dc4f3bffb700266edf7309dac16f69b1891441aab21223e0a
SSDEEP 49152:zsC/lYEBYLsEAQACR07Q3byRD8aXY658:zsCdYEByfAw07QLyLn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

https://t.me/r8z0l
https://steamcommunity.com/profiles/76561199698764354

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/936-2-0x0000000004030000-0x0000000004193000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-15-0x0000000000400000-0x0000000000648000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	kat3A4A.tmp

Executes dropped EXE 1 IoCs

pid	Process
1092	kat3A4A.tmp

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 936 set thread context of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84

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

System Information Discovery
T1082

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	kat3A4A.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1164	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1092	kat3A4A.tmp
1092	kat3A4A.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 936 wrote to memory of 1092	936	c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe	84
PID 1092 wrote to memory of 4568	1092	kat3A4A.tmp	86
PID 1092 wrote to memory of 4568	1092	kat3A4A.tmp	86
PID 1092 wrote to memory of 4568	1092	kat3A4A.tmp	86
PID 4568 wrote to memory of 1164	4568	cmd.exe	88
PID 4568 wrote to memory of 1164	4568	cmd.exe	88
PID 4568 wrote to memory of 1164	4568	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\c20c7132043488b5b58394c3a8b65060_NeikiAnalytics.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:936
- C:\Users\Admin\AppData\Local\Temp\kat3A4A.tmp
  C:\Users\Admin\AppData\Local\Temp\kat3A4A.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1092
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3A4A.tmp" & rd /s /q "C:\ProgramData\KJDGDBFBGIDG" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4568
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1164

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

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

kat3A4A.tmp

Path C:\Users\Admin\AppData\Local\Temp\kat3A4A.tmp
Size 861KB
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
SSDEEP 24576:o0ESdQpglO1CxDyawn27h+9hrlgKQY9SGcZwCdTp:o0RIglO1CuL9VNcaCd9
MD5 SHA1 SHA512 SSDEEP

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memory/936-0-0x0000000002450000-0x0000000002451000-memory.dmp

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memory/936-2-0x0000000004030000-0x0000000004193000-memory.dmp

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memory/936-9-0x0000000000400000-0x00000000005EE000-memory.dmp

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memory/1092-4-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-8-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-10-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-11-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-12-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-13-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-14-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1092-15-0x0000000000400000-0x0000000000648000-memory.dmp

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