asyncrat | 9be72fd888085db2d0b72e1bd4a2c4e986b5c0ad6c1ce873c25d6cf289bc72e0

Analysis

max time kernel
158s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
06-10-2023 15:54

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General

Target

Stub.exe
Size

65KB
MD5

46d01b897ab24927386d833e630b169b
SHA1

561605aee3e28603fe8e13bf9842b43daa2cc643
SHA256

9be72fd888085db2d0b72e1bd4a2c4e986b5c0ad6c1ce873c25d6cf289bc72e0
SHA512

62d8afd488eed1a5478b3bf0b432d8d32e8e31b4590d43a7773665d4c2158e985d29b8f3226f18cd10da9558b040bddcff7cff7ded3dc38e8f5612453d8dae6e
SSDEEP

1536:/A2Fhvk7JknoDR58tXwL6cgue6rsgE8PU6agj3OJ4G+hbtEd7AJRX8roTR9x:Y2FhvkNkgE8PU6ag6J4zhbtlW2nx

Score

10^/10

asyncrat joker rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

joker

209.145.56.0:57

Mutex

AsyncMutex_fff

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2988-1-0x0000000000270000-0x0000000000286000-memory.dmp	asyncrat

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
T1552.001
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Stub.exe

pid process

2988 Stub.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Stub.exe

description pid process

Token: SeDebugPrivilege 2988 Stub.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Stub.exe

pid process

2988 Stub.exe

pid	process
2988	Stub.exe

description	pid	process
Token: SeDebugPrivilege	2988	Stub.exe

pid	process
2988	Stub.exe

C:\Users\Admin\AppData\Local\Temp\Stub.exe
"C:\Users\Admin\AppData\Local\Temp\Stub.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2988

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2988-0-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/2988-1-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2988-2-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/2988-3-0x0000000004C30000-0x0000000004C40000-memory.dmp

Filesize
64KB

Download
memory/2988-4-0x00000000054F0000-0x0000000005A94000-memory.dmp

Filesize
5.6MB

Download
memory/2988-5-0x0000000005130000-0x00000000051C2000-memory.dmp

Filesize
584KB

Download
memory/2988-6-0x0000000005120000-0x000000000512A000-memory.dmp

Filesize
40KB

Download
memory/2988-7-0x0000000004C30000-0x0000000004C40000-memory.dmp

Filesize
64KB

Download
memory/2988-10-0x00000000061C0000-0x000000000625C000-memory.dmp

Filesize
624KB

Download
memory/2988-11-0x0000000006260000-0x00000000062C6000-memory.dmp

Filesize
408KB

Download