asyncrat | dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d

Analysis

max time kernel
140s
max time network
146s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
13-07-2024 12:14

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General

Target

dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe
Size

597KB
MD5

adf266d3870069d9c6ec30091d347f68
SHA1

dc27468702ccd3139f773c72ba64d38d8a50ff07
SHA256

dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d
SHA512

cf57167932dde49b92cfcb72ee84dca1df51fe66d2ca2d832488bb4d410fd1f5ed9e0e8755a8fd5de41bb96f0e40fce35fa6c678ff4c794b7077026441ba26cd
SSDEEP

6144:xSyBmqk0G78MNNhrXN8d9sx40RZGI8i6e6jherVXLw1Ig:xSycICXhrMWx/4Iae6VkXUWg

Score

10^/10

asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Mutex

Aakn1515knAakn1515kn!

Attributes

c2_url_file
http://update-checker-status.cc/OCB-Async.txt
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-95457810-830748662-4054918673-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\ViperFolder\\FipersVWV.exe\","	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe
1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe
Token: SeDebugPrivilege	2896	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80
PID 1744 wrote to memory of 2896	1744	dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe	80

C:\Users\Admin\AppData\Local\Temp\dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe
"C:\Users\Admin\AppData\Local\Temp\dd44612801b32da18885221e9211c565eecceeef71217b5b9858b839d6f8dc0d.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1744-8-0x0000000006E00000-0x0000000006E4C000-memory.dmp

Filesize
304KB

Download
memory/1744-6-0x0000000005A90000-0x0000000005AE2000-memory.dmp

Filesize
328KB

Download
memory/1744-2-0x0000000005D70000-0x0000000006316000-memory.dmp

Filesize
5.6MB

Download
memory/1744-3-0x0000000005700000-0x0000000005792000-memory.dmp

Filesize
584KB

Download
memory/1744-0-0x00000000745AE000-0x00000000745AF000-memory.dmp

Filesize
4KB

Download
memory/1744-5-0x00000000056E0000-0x00000000056EA000-memory.dmp

Filesize
40KB

Download
memory/1744-1-0x0000000000CF0000-0x0000000000D8C000-memory.dmp

Filesize
624KB

Download
memory/1744-7-0x0000000005D30000-0x0000000005D60000-memory.dmp

Filesize
192KB

Download
memory/1744-4-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download
memory/1744-9-0x0000000037D00000-0x0000000037D66000-memory.dmp

Filesize
408KB

Download
memory/1744-13-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download
memory/2896-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2896-14-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download
memory/2896-15-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download
memory/2896-16-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download
memory/2896-17-0x00000000745A0000-0x0000000074D51000-memory.dmp

Filesize
7.7MB

Download