asyncrat | eb37d95815824d94246220ac0bb63bce4ad8f9b3e821362d2d35867e9b83068c

Analysis

max time kernel
120s
max time network
146s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
03/10/2023, 08:40

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General

Target

Stub.exe
Size

47KB
MD5

6c99b4c4064fe2ba0f3506b6283a16fa
SHA1

08a9c6a87194d88999dddc3689b73bc4923e4e43
SHA256

eb37d95815824d94246220ac0bb63bce4ad8f9b3e821362d2d35867e9b83068c
SHA512

7d113e23bafd432ef8436e38c64ff12198db5b5cb547c02753e52e998a83deedbed36a46e4914f04fd70de76be69c41a440eeeffe903979bf62c5ca6aca93bef
SSDEEP

768:6u/6ZTgoiziWUUM9rmo2qrdkxZLbkxQ86PI+ag0b3M8S5v5FwVhFNXw3tE7bhv8+:6u/6ZTgle2e1xQ8D+Gbc8S50FNAd4dS8

Score

10^/10

asyncrat aloshwsf5555 rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

AloshWSF5555

microwsfp5555.ddns.net:5555

Mutex

AsyncMutex_6SI8OkPnk

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

resource	yara_rule
behavioral1/memory/1764-0-0x0000000000080000-0x0000000000092000-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 use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	Stub.exe

C:\Users\Admin\AppData\Local\Temp\Stub.exe
"C:\Users\Admin\AppData\Local\Temp\Stub.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab6451.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar7860.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
memory/1764-0-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1764-1-0x0000000074A90000-0x000000007517E000-memory.dmp

Filesize
6.9MB

Download
memory/1764-2-0x00000000042A0000-0x00000000042E0000-memory.dmp

Filesize
256KB

Download
memory/1764-19-0x0000000074A90000-0x000000007517E000-memory.dmp

Filesize
6.9MB

Download
memory/1764-20-0x0000000005530000-0x00000000055AE000-memory.dmp

Filesize
504KB

Download
memory/1764-39-0x00000000006A0000-0x00000000006AA000-memory.dmp

Filesize
40KB

Download
memory/1764-40-0x0000000005DC0000-0x0000000005E50000-memory.dmp

Filesize
576KB

Download
memory/1764-41-0x00000000061D0000-0x0000000006230000-memory.dmp

Filesize
384KB

Download
memory/1764-42-0x00000000042A0000-0x00000000042E0000-memory.dmp

Filesize
256KB

Download