AsyncRAT Deep Static Analysis (06798ab0) | Critical Tehdit

Derin Statik Analiz — AsyncRAT | Tehdit: critical

Dosya Kimligi

SHA256	`06798ab00b4cb050918236f0ac5c3a30252dadfe6c8e7563e276966e7727c055`
MD5	`b950d4671c9c3a723aff0bf8b27e563f`
SHA1	`dc9d8c742c301901e832f34781f9eb0ccd5204a8`
Boyut	786432 byte
Tur	/opt/ksentinel/samples/06798ab00b4cb050_COTIZACION.com.exe: PE32 executable (GUI
Derleme	Bilinmiyor
Packer	UPX

C2 Adresi: Sifrelenmis/obfuskeli config (statik analizle cozulemedi)

Yetenekler

TCP Socket C2

Gelistirici Ipuclari

PDB Yolu: bash: -c: line 1: syntax error near unexpected token `|' bash: -c: line 1: `grep -oiE '[A-Za-z]:\\Users\\[^\\]{2,30}\\[^

Telegram: @8KHK @cTSJt @DxR4Lmz @iJry @lZWP

PE Analizi

Guvenlik Taramasi

file entropy:                    7.822304 (probably packed)
fpu anti-disassembly:            no
imagebase:                       normal
entrypoint:                      normal
DOS stub:

Import Tablosu

Imported functions
    Library
        Name:                            mscoree.dll
        Functions
            Function
                Hint:                            0
                Name:                            _CorExeMain

Binwalk / Packer

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             Microsoft executable, portable (PE)
56862

Aile Tespiti

String kaniti bulunamadi (sifrelenmis/obfuskeli).

AsyncRAT — Malware Profile

AsyncRAT, 2019'da acik kaynak olarak yayimlanan C# tabanli RAT ailesidir. Ekran yakalama, keylogger, dosya islemleri, HVNC ve plugin sistemine sahiptir. C2 AES-128-CBC ile sifrelenir, TCP uzerinden calisir. JS/PDF yemi ile dagitilir.

Malware Type

RAT

Programming Language

.NET C#

C2 Protocol

TCP/SSL

Target Systems

Windows

Also Known As (AKA)

AsyncClient

Technical Details

C# .NET, AES-128-CBC sifreleme, TCP port 6606/4449 (varsayilan), Mutex kontrol, Runtime assembly loading, Anti-analysis (VM check, Process listesi), HVNC, Keylogger, Stealer, Botnet modulu

Attribution / Threat Actor

Acik kaynak - orjinal gelistirici GitHub'da yayinladi; surekli siber suclu toplulugu tarafindan kullanilmaktadir. APT operasyonlari da dahil olmak uzere cok sayida farkli tehdit aktoru kullanmaktadir.

Capabilities & Behavior

Uzaktan Erişim & Kontrol

Keylogger

Ekran Görüntüsü

Webcam Erişimi

Dosya Yönetimi

Süreç Yönetimi

Komut Yürütme

Kalıcılık Mekanizması

IOC List (5 indicators)

IOC — AsyncRAT

# 
dc9d8c742c301901e832f34781f9eb0ccd5204a8

# SHA256
06798ab00b4cb050918236f0ac5c3a30252dadfe6c8e7563e276966e7727c055

# MD5
b950d4671c9c3a723aff0bf8b27e563f

# FILEPATH
bash: -c: line 1: syntax error near unexpected token `|'

# FILEPATH
bash: -c: line 1: `grep -oiE '[A-Za-z]:\\[^\s\"'\'<>|*?]{5,150}' /tmp/all.txt | grep -viE '(msbuild|nuget|packages|Microsoft\.NET)' | sort -u | head -10'

Type	Value	Note
	dc9d8c742c301901e832f34781f9eb0ccd5204a8
sha256	06798ab00b4cb050918236f0ac5c3a30252dadfe6c8e7563e276966e7727c055
md5	b950d4671c9c3a723aff0bf8b27e563f
filepath	bash: -c: line 1: syntax error near unexpected token `\|'
filepath	bash: -c: line 1: `grep -oiE '[A-Za-z]:\\[^\s\"'\'<>\|*?]{5,150}' /tmp/all.txt \| grep -viE '(msbuild\|nuget\|packages\|Microsoft\.NET)' \| sort -u \| head -10'

AsyncRAT — Go to Full Profile →

C2 Servers (8 recorded servers for this family)

Address	Type	Port	Protocol	Status	Country
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.