ytstealer | 99397f1c6ff002c0e52ce8dbcfc6341d2592d8c7a12462adb0efc3450cfcd34b

Analysis

max time kernel
164s
max time network
176s
platform
windows10_x64
resource
win10-20220414-en
resource tags

arch:x64arch:x86image:win10-20220414-enlocale:en-usos:windows10-1703-x64system
submitted
12-08-2022 07:07

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General

Target

99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
Size

4.0MB
MD5

38069d06debf35bab01ffab2d69876b1
SHA1

d475a44c97c07aa79a0a91d93985377217936479
SHA256

99397f1c6ff002c0e52ce8dbcfc6341d2592d8c7a12462adb0efc3450cfcd34b
SHA512

b94d2791a4d5b075dedeab358af12a616b96506df85aa501bc46ce77f939bdd1617aef2023290235fa8228312b60c2ac3f8d4d96e62a3063cfe1dd38ad492686

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/2644-118-0x00000000000B0000-0x0000000000E79000-memory.dmp	family_ytstealer
behavioral2/memory/2644-120-0x00000000000B0000-0x0000000000E79000-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/2644-118-0x00000000000B0000-0x0000000000E79000-memory.dmp	upx
behavioral2/memory/2644-120-0x00000000000B0000-0x0000000000E79000-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:

99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe

pid	process
2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.execmd.exe

description	pid	process	target process
PID 2644 wrote to memory of 2224	2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe	cmd.exe
PID 2644 wrote to memory of 2224	2644	99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe	cmd.exe
PID 2224 wrote to memory of 4504	2224	cmd.exe	choice.exe
PID 2224 wrote to memory of 4504	2224	cmd.exe	choice.exe

C:\Users\Admin\AppData\Local\Temp\99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
"C:\Users\Admin\AppData\Local\Temp\99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2644

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\99397F1C6FF002C0E52CE8DBCFC6341D2592D8C7A12462ADB0EFC3450CFCD34B.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:2224

C:\Windows\system32\choice.exe
choice /C Y /N /D Y /T 0
3⤵
PID:4504

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/2224-119-0x0000000000000000-mapping.dmp

Download
memory/2644-118-0x00000000000B0000-0x0000000000E79000-memory.dmp

Filesize
13.8MB

Download
memory/2644-120-0x00000000000B0000-0x0000000000E79000-memory.dmp

Filesize
13.8MB

Download
memory/4504-121-0x0000000000000000-mapping.dmp

Download