asyncrat | 9be72fd888085db2d0b72e1bd4a2c4e986b5c0ad6c1ce873c25d6cf289bc72e0

Analysis

max time kernel
147s
max time network
152s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
06-10-2023 15:57

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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
behavioral1/memory/1956-0-0x0000000000200000-0x0000000000216000-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

1956 Stub.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Stub.exe

description pid process

Token: SeDebugPrivilege 1956 Stub.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Stub.exe

pid process

1956 Stub.exe

pid	process
1956	Stub.exe

description	pid	process
Token: SeDebugPrivilege	1956	Stub.exe

pid	process
1956	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:1956

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

C:\Users\Admin\AppData\Local\Temp\CabB914.tmp
Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarD0CC.tmp
Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
memory/1956-0-0x0000000000200000-0x0000000000216000-memory.dmp

Filesize
88KB

Download
memory/1956-1-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/1956-2-0x0000000001F80000-0x0000000001FC0000-memory.dmp

Filesize
256KB

Download
memory/1956-19-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download