asyncrat | 9c43b8f6793d12e08d84a3380c338675473db6c17838831a76d3b480b493c5c5

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
17-07-2024 10:22

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General

Target

0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe
Size

1.8MB
MD5

2e12b69ae7aa5d931a6aa3bf554071df
SHA1

7fa9b1642771d38916f45da8f5f00a9eacc94a28
SHA256

0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168
SHA512

e299d2fa9890b2a178ca2aa06e44e76a057a936c0987d0c59d08e9428959f75f20080cfdba5d3d86402182e9ec18818726f46bd91ebaa6c0dbe0672727ccc47d
SSDEEP

49152:ery0WqVTJeKaCr4r6z+oCvkXMuMeYghagVrmp:ernRVBasM6z+zS19T

Score

10^/10

asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Mutex

AsyncMutex_6SI8OkPnk

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-1-5-21-1176886754-713327781-2233697964-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\NetAsGX\\PcerTX.exe\","	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4856 set thread context of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe
4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe
Token: SeDebugPrivilege	216	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 3084	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	88
PID 4856 wrote to memory of 3084	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	88
PID 4856 wrote to memory of 3084	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	88
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89
PID 4856 wrote to memory of 216	4856	0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe	89

C:\Users\Admin\AppData\Local\Temp\0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe
"C:\Users\Admin\AppData\Local\Temp\0c2dd9c9b940868e85bc46857d049a057af32b8abdb93ebc6732774575013168.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  2⤵
  PID:3084
- 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:216

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/216-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/216-16-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/216-15-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/216-14-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/216-12-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/4856-3-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/4856-6-0x000000003CD00000-0x000000003CD66000-memory.dmp

Filesize
408KB

Download
memory/4856-7-0x000000003D2B0000-0x000000003D342000-memory.dmp

Filesize
584KB

Download
memory/4856-8-0x000000003D900000-0x000000003DEA4000-memory.dmp

Filesize
5.6MB

Download
memory/4856-5-0x0000000005470000-0x00000000057C4000-memory.dmp

Filesize
3.3MB

Download
memory/4856-13-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/4856-4-0x0000000005440000-0x0000000005462000-memory.dmp

Filesize
136KB

Download
memory/4856-0-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/4856-2-0x00000000051B0000-0x000000000536E000-memory.dmp

Filesize
1.7MB

Download
memory/4856-1-0x00000000006C0000-0x0000000000890000-memory.dmp

Filesize
1.8MB

Download