stealc | 9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d

Analysis

max time kernel
137s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 13:31

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
cce7a4c98202476cb31c37b50e93dae9.exe
Size 2.1MB
Sample240521-qsdnesff7x
SHA256 9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d
MD5 cce7a4c98202476cb31c37b50e93dae9
SHA1 6547c6de2a4256ec3e5409ea31fee6106fd17d2c
SHA512 3ae818bf483833725e5cf2a8f15e1a4449f21233d71fec581d470527853b256a18a475ef7b33ec3d46624af9e8e59271fcf84bea27eb3ac3f3ccd08814d017f1
SSDEEP 49152:N6uDuaS9refukJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9TktIuoITsdZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 8 IoCs

stealer

resource	yara_rule
behavioral2/memory/1920-2-0x0000000004050000-0x0000000004199000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-19-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-37-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3624-38-0x0000000000400000-0x0000000000646000-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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3624	kat6FE0.tmp

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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 1920 set thread context of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89

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	kat6FE0.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3624	kat6FE0.tmp
3624	kat6FE0.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89
PID 1920 wrote to memory of 3624	1920	cce7a4c98202476cb31c37b50e93dae9.exe	89

C:\Users\Admin\AppData\Local\Temp\cce7a4c98202476cb31c37b50e93dae9.exe
"C:\Users\Admin\AppData\Local\Temp\cce7a4c98202476cb31c37b50e93dae9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\Temp\kat6FE0.tmp
  C:\Users\Admin\AppData\Local\Temp\kat6FE0.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3624

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

Replay Monitor

Loading Replay Monitor...

Downloads

kat6FE0.tmp

Path C:\Users\Admin\AppData\Local\Temp\kat6FE0.tmp
Size 861KB
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
SSDEEP 24576:o0ESdQpglO1CxDyawn27h+9hrlgKQY9SGcZwCdTp:o0RIglO1CuL9VNcaCd9
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1920-0-0x00000000007D0000-0x00000000007D1000-memory.dmp

Download

memory/1920-2-0x0000000004050000-0x0000000004199000-memory.dmp

Download

memory/1920-10-0x0000000000400000-0x000000000061C000-memory.dmp

Download

memory/3624-4-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-8-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-9-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-19-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-20-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-23-0x000000001B780000-0x000000001B9DF000-memory.dmp

Download

memory/3624-37-0x0000000000400000-0x0000000000646000-memory.dmp

Download

memory/3624-38-0x0000000000400000-0x0000000000646000-memory.dmp

Download