stealc | 0ee216cd724e09d917910f42e59784ec4008e29f71ffa77436d78ed489ef128d

Analysis

max time kernel
124s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20231130-en
resource tags

arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2023, 10:34

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General

Target
file.exe
Size 289KB
Sample231206-ml33ysdg58
SHA256 0ee216cd724e09d917910f42e59784ec4008e29f71ffa77436d78ed489ef128d
MD5 43ded370f1324c50f1d5927e215de3b7
SHA1 2a8da9e0b7637e675c1624e0e47b7b251fbc25aa
SHA512 5aca0bdfb59f4632697db071e1308e0cd20d4648027d99bd939578e5d40154025b5533f562dc369447959fd55fd3e0a9860df3dcff630973ef83247987313789
SSDEEP 3072:8YwOuHZ+dIB2SBWR452+yATMNrf5eieXI5HigwVdbVryTk+:YHcIBVcaY+1TE8ieXPgS52T
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery stealer

Malware Config

Extracted

Family

stealc

http://5.42.64.41

Attributes

url_path
/40d570f44e84a454.php

rc4.plain

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
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 3284 set thread context of 2516	3284	file.exe	34

Program crash 1 IoCs

pid	pid_target	Process	procid_target
516	2516	WerFault.exe	34

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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2516	file.exe
2516	file.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34
PID 3284 wrote to memory of 2516	3284	file.exe	34

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 688
    3⤵
    - Program crash
    PID:516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2516 -ip 2516
1⤵
PID:3636

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

memory/2516-3-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-5-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-6-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-7-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-9-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-11-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-13-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/2516-15-0x0000000000400000-0x000000000062E000-memory.dmp

Download

memory/3284-2-0x00000000047F0000-0x000000000480D000-memory.dmp

Download

memory/3284-1-0x0000000002E40000-0x0000000002F40000-memory.dmp

Download