ytstealer | 6617c1ab08b88711538b600fc4c5cf76098088b436185f5590cdb0e1fc1f6b13

Analysis

max time kernel
160s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
31-08-2022 07:44

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General

Target

yu.exe
Size

4.0MB
MD5

da70d0aab8cad0887e5e9b5174c9d87d
SHA1

af5096c0b9fd4f4926850c4479c8e0e0eac8c91b
SHA256

6617c1ab08b88711538b600fc4c5cf76098088b436185f5590cdb0e1fc1f6b13
SHA512

c100a08bccfa00dcf93160b6174940db1b6839aafbbaec8caa25c4c0e004c96aebf243552df85b7dff56915401bfcb0ecb9caa9bce2edf0d29a9b52c849ebcc5
SSDEEP

98304:SsFwGLi2ftBJTM3YQl25QrsIFuzsfuzCCsAp0a9Hqt:SeL7tBJSYChrZHfeCCz7

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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4300-134-0x0000000000AB0000-0x0000000001888000-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/4300-132-0x0000000000AB0000-0x0000000001888000-memory.dmp	upx
behavioral2/memory/4300-134-0x0000000000AB0000-0x0000000001888000-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:

yu.exe

pid process

4300 yu.exe
4300 yu.exe
4300 yu.exe
4300 yu.exe

pid	process
4300	yu.exe
4300	yu.exe
4300	yu.exe
4300	yu.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

yu.execmd.exe

description	pid	process	target process
PID 4300 wrote to memory of 4760	4300	yu.exe	cmd.exe
PID 4300 wrote to memory of 4760	4300	yu.exe	cmd.exe
PID 4760 wrote to memory of 2272	4760	cmd.exe	choice.exe
PID 4760 wrote to memory of 2272	4760	cmd.exe	choice.exe

C:\Users\Admin\AppData\Local\Temp\yu.exe
"C:\Users\Admin\AppData\Local\Temp\yu.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4300
- 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\yu.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Windows\system32\choice.exe
    choice /C Y /N /D Y /T 0
    3⤵
    PID:2272

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/2272-135-0x0000000000000000-mapping.dmp

Download
memory/4300-132-0x0000000000AB0000-0x0000000001888000-memory.dmp

Filesize
13.8MB

Download
memory/4300-134-0x0000000000AB0000-0x0000000001888000-memory.dmp

Filesize
13.8MB

Download
memory/4760-133-0x0000000000000000-mapping.dmp

Download