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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

Filesize
13.8MB

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

Filesize
13.8MB

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

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

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