asyncrat | b51ccac9172b10f3b730c8ae7353cd11bfe2ead8cc8d0e153bada5ad23e1e090

Analysis

max time kernel
30s
max time network
33s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
19-07-2024 23:41

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General

Target

sigma8.exe
Size

317KB
MD5

3f5d49e0931b38e06bc462ece96e05eb
SHA1

3f8e5cc785431afbeaeec4c03e020e1fb98b8c9a
SHA256

b51ccac9172b10f3b730c8ae7353cd11bfe2ead8cc8d0e153bada5ad23e1e090
SHA512

67cc3f844403308eaa13ded7e0c4167f0878e3faed0813a23559d15097b0d7c7884922bb913b895ffeb3078ed2130646a8d9f13af05d4c20e33e0c162fe2fb0a
SSDEEP

6144:rrlK1ugS2q7Yu2+Kpe7dYXq2r0xAKyGJlETs9lWXoIsJVl85hee5hur:rrlYu2D87XmnBTs95ordbW

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

10.8.0.4:6606

10.8.0.4:7707

10.8.0.4:8808

Mutex

jKcnVXaROJ1n

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/3984-10-0x000001378EE20000-0x000001378EE32000-memory.dmp	family_asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3666881604-935092360-1617577973-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Google Chrome Updater QC = "C:\\Users\\Admin\\AppData\\Roaming\\Google Chrome\\Update Service\\Chrome Update Daemon.exe"	sigma8.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88
PID 2612 wrote to memory of 3984	2612	sigma8.exe	88

C:\Users\Admin\AppData\Local\Temp\sigma8.exe
"C:\Users\Admin\AppData\Local\Temp\sigma8.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe
  "C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe"
  2⤵
  PID:3984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2612-0-0x0000000000300000-0x0000000000356000-memory.dmp

Filesize
344KB

Download
memory/2612-5-0x0000000000300000-0x0000000000356000-memory.dmp

Filesize
344KB

Download
memory/2612-7-0x0000000000300000-0x0000000000356000-memory.dmp

Filesize
344KB

Download
memory/3984-8-0x000001378D4A0000-0x000001378D4B3000-memory.dmp

Filesize
76KB

Download
memory/3984-9-0x00007FFDFC023000-0x00007FFDFC025000-memory.dmp

Filesize
8KB

Download
memory/3984-10-0x000001378EE20000-0x000001378EE32000-memory.dmp

Filesize
72KB

Download
memory/3984-11-0x00007FFDFC020000-0x00007FFDFCAE2000-memory.dmp

Filesize
10.8MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads