ytstealer | 525d3fed0413eeac21603b00ccba1ff4331ceeb848efcad297d1eba91aa03331

Analysis

max time kernel
68s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
23-06-2022 08:43

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General

Target

4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe

Score

10^/10

ytstealer spyware stealer upx

Malware Config

Signatures

YTStealer
YTStealer is a malware designed to steal YouTube authentication cookies.
stealer ytstealer

YTStealer payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/320-130-0x00000000004B0000-0x0000000001279000-memory.dmp	family_ytstealer
behavioral2/memory/320-133-0x00000000004B0000-0x0000000001279000-memory.dmp	family_ytstealer

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/320-130-0x00000000004B0000-0x0000000001279000-memory.dmp	upx
behavioral2/memory/320-133-0x00000000004B0000-0x0000000001279000-memory.dmp	upx

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
T1081

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe

pid	process
320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe
320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe
320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe
320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.execmd.exe

description	pid	process	target process
PID 320 wrote to memory of 3140	320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe	cmd.exe
PID 320 wrote to memory of 3140	320	4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe	cmd.exe
PID 3140 wrote to memory of 4548	3140	cmd.exe	choice.exe
PID 3140 wrote to memory of 4548	3140	cmd.exe	choice.exe

C:\Users\Admin\AppData\Local\Temp\4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe
"C:\Users\Admin\AppData\Local\Temp\4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:320
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\Users\Admin\AppData\Local\Temp\4e78dbfd9d5fcc891dc5bf5c37930188a51b817f9c94406717ec3b14c300de1a.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3140
- - C:\Windows\system32\choice.exe
    choice /C Y /N /D Y /T 0
    3⤵
    PID:4548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/320-130-0x00000000004B0000-0x0000000001279000-memory.dmp

Filesize
13.8MB

Download
memory/320-133-0x00000000004B0000-0x0000000001279000-memory.dmp

Filesize
13.8MB

Download
memory/3140-131-0x0000000000000000-mapping.dmp

Download
memory/4548-132-0x0000000000000000-mapping.dmp

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