asyncrat | 9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
21-07-2024 06:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe
Size

1.2MB
MD5

017fe34b7a5a976740fb655f2a6e626d
SHA1

a389020efb59f92042306499b98de8d5c2951dda
SHA256

9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090
SHA512

8289dc576d5b4bbf11f69c98cbe337e9365e77add7965b7c1b1b2c8f1b77d1e897dcff023b5ce22376ecb83370c747753318cf68b9ff6c851733566e4b52edcf
SSDEEP

24576:3P9blhVTV8VN3b5J3r0nMkOSMrcnNN9SyASIEtJlWB:ln7iN3NJ3r6M1MXtIE3l

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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\brabrkbkjareba\\vbreubvhj.exe\","	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3276 set thread context of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe
Token: SeDebugPrivilege	2768	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88
PID 3276 wrote to memory of 2768	3276	9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe	88

C:\Users\Admin\AppData\Local\Temp\9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe
"C:\Users\Admin\AppData\Local\Temp\9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3276
- 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:2768

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

Loading Replay Monitor...

Downloads

memory/2768-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-18-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/2768-17-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/2768-16-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/2768-15-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/3276-8-0x0000000033260000-0x00000000332C6000-memory.dmp

Filesize
408KB

Download
memory/3276-6-0x00000000050A0000-0x00000000050C2000-memory.dmp

Filesize
136KB

Download
memory/3276-7-0x00000000050D0000-0x0000000005424000-memory.dmp

Filesize
3.3MB

Download
memory/3276-0-0x000000007504E000-0x000000007504F000-memory.dmp

Filesize
4KB

Download
memory/3276-9-0x0000000033700000-0x0000000033792000-memory.dmp

Filesize
584KB

Download
memory/3276-10-0x0000000033D50000-0x00000000342F4000-memory.dmp

Filesize
5.6MB

Download
memory/3276-5-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/3276-14-0x0000000075040000-0x00000000757F0000-memory.dmp

Filesize
7.7MB

Download
memory/3276-4-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/3276-3-0x00000000026E0000-0x00000000026EA000-memory.dmp

Filesize
40KB

Download
memory/3276-2-0x0000000004DD0000-0x0000000004EBA000-memory.dmp

Filesize
936KB

Download
memory/3276-1-0x00000000002E0000-0x0000000000418000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads