stealc | ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779

Analysis

max time kernel
133s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/06/2024, 01:47

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General

Target
ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe
Size 1.5MB
Sample240628-b7twmaxcrl
SHA256 ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779
MD5 d22d5aaf005a60e66ef3c3bff3054891
SHA1 0a678dcc5b75e4a711bd703a307cc21378d50add
SHA512 37b98d11b71f74ebf19cb3e9aefb235670f430e4548da08459c6d71291f8c50d2d49c4c41e813a894abcf2e7a730e9603a2becc97c310973f10f53288fc7702f
SSDEEP 24576:IXc46Crf8fA3acHps+/qASfmBgXk/xrADOv1xvF87hso8bTTXo:IXl8I3HHO+SASagXkJr4MDkhs9g
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://68.183.108.129

Attributes

url_path
/6259fdc16222e061.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc

Executes dropped EXE 1 IoCs

pid	Process
3744	kat4537.tmp

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 4968 set thread context of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81

Program crash 1 IoCs

pid	pid_target	Process	procid_target
816	3744	WerFault.exe	81

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	kat4537.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4537.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3744	kat4537.tmp
3744	kat4537.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81
PID 4968 wrote to memory of 3744	4968	ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe	81

C:\Users\Admin\AppData\Local\Temp\ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe
"C:\Users\Admin\AppData\Local\Temp\ca2874cdb9525d52d0d21315d528bf6cf054b835cdbe96c4b5af103a590ea779.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Users\Admin\AppData\Local\Temp\kat4537.tmp
  C:\Users\Admin\AppData\Local\Temp\kat4537.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3744
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 1312
    3⤵
    - Program crash
    PID:816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3744 -ip 3744
1⤵
PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

kat4537.tmp

Path C:\Users\Admin\AppData\Local\Temp\kat4537.tmp
Size 861KB
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
SSDEEP 24576:o0ESdQpglO1CxDyawn27h+9hrlgKQY9SGcZwCdTp:o0RIglO1CuL9VNcaCd9
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3744-15-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-10-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-4-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-8-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-11-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-12-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-17-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-19-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/3744-21-0x0000000000400000-0x000000000063C000-memory.dmp

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memory/4968-2-0x0000000003F40000-0x0000000004044000-memory.dmp

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memory/4968-9-0x0000000000400000-0x0000000000582000-memory.dmp

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memory/4968-0-0x00000000021E0000-0x00000000021E1000-memory.dmp

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