asyncrat | 4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2024, 16:02

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General

Target

4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe
Size

608KB
MD5

414dc5eb0c47614a9992cb197e7c2629
SHA1

e96011f7fe6748042874825c48b6bcab41398374
SHA256

4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798
SHA512

5b85f28d258d8d195081d62e99aa05f9a5c02ce1af5e8061e1e63c6cbc863251b85719ac931550a8e80d0e00b03e6ddfb4d5200fc0abffea652ac31ab2a162a6
SSDEEP

6144:Atn9LnHdKXSHl6YYCT67sVoxhED4jRVp0CNeG3TNLCRLF:onR9N6aIsVAEEjCCwALu

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-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\ViperFolder\\FiperH.exe\","	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3968 set thread context of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe
3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe
Token: SeDebugPrivilege	3348	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88
PID 3968 wrote to memory of 3348	3968	4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe	88

C:\Users\Admin\AppData\Local\Temp\4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe
"C:\Users\Admin\AppData\Local\Temp\4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3968
- 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:3348

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/3348-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3348-16-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3348-15-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3348-14-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3348-13-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3968-3-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3968-6-0x0000000005980000-0x00000000059E6000-memory.dmp

Filesize
408KB

Download
memory/3968-7-0x0000000037710000-0x00000000377A2000-memory.dmp

Filesize
584KB

Download
memory/3968-8-0x0000000037D60000-0x0000000038304000-memory.dmp

Filesize
5.6MB

Download
memory/3968-5-0x0000000005880000-0x00000000058CC000-memory.dmp

Filesize
304KB

Download
memory/3968-12-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/3968-4-0x00000000057A0000-0x00000000057D2000-memory.dmp

Filesize
200KB

Download
memory/3968-0-0x000000007524E000-0x000000007524F000-memory.dmp

Filesize
4KB

Download
memory/3968-2-0x0000000005710000-0x0000000005762000-memory.dmp

Filesize
328KB

Download
memory/3968-1-0x0000000000DA0000-0x0000000000E3E000-memory.dmp

Filesize
632KB

Download