asyncrat | 4ca7277273f9409593101a4e73211877696ae1bed8fddd28650fdd9877ffd6f0

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2023 14:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

r132-031Payment.exe
Size

369KB
MD5

2d21173d46e5ed9795ee28f6900edfbc
SHA1

e0e16b8d5932434f0a18e1dbab1c102d818f9700
SHA256

4ca7277273f9409593101a4e73211877696ae1bed8fddd28650fdd9877ffd6f0
SHA512

c90095702262ac1bac1ed592a3417485e1ef03871a78546722f10dc3f33e4644b06391aaf090f8a4affc43dfe0223ff781699858b14fdcd77d09eff8838d9434
SSDEEP

6144:Q1cJnjX2zt02wn7GHNX+oqUXMlC6OK8Yp2sSsXB0mfnUIbj:IcJnCz/wnKHVEUXMlCMWsSIvfVbj

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

bestsuccess.ddns.net:2442

Mutex

AsyncMutex_6SI8OkPnk

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

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-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\WUfC3nfL8Rd1KXnG\\pnnVCp6WIqaf.exe\",explorer.exe"	r132-031Payment.exe

Async RAT payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4264-11-0x0000000003350000-0x0000000003362000-memory.dmp	asyncrat
behavioral2/memory/1456-12-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/1456-15-0x0000000005620000-0x0000000005630000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4264 set thread context of 1456	4264	r132-031Payment.exe	87

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4264	r132-031Payment.exe
4264	r132-031Payment.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4264	r132-031Payment.exe
Token: SeDebugPrivilege	4264	r132-031Payment.exe
Token: SeDebugPrivilege	1456	r132-031Payment.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87
PID 4264 wrote to memory of 1456	4264	r132-031Payment.exe	87

C:\Users\Admin\AppData\Local\Temp\r132-031Payment.exe
"C:\Users\Admin\AppData\Local\Temp\r132-031Payment.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Users\Admin\AppData\Local\Temp\r132-031Payment.exe
  "C:\Users\Admin\AppData\Local\Temp\r132-031Payment.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1456

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/1456-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1456-21-0x0000000005620000-0x0000000005630000-memory.dmp

Filesize
64KB

Download
memory/1456-20-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/1456-19-0x00000000063A0000-0x0000000006406000-memory.dmp

Filesize
408KB

Download
memory/1456-18-0x0000000006290000-0x000000000632C000-memory.dmp

Filesize
624KB

Download
memory/1456-15-0x0000000005620000-0x0000000005630000-memory.dmp

Filesize
64KB

Download
memory/1456-14-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/4264-4-0x00000000058E0000-0x00000000058F0000-memory.dmp

Filesize
64KB

Download
memory/4264-8-0x00000000058E0000-0x00000000058F0000-memory.dmp

Filesize
64KB

Download
memory/4264-11-0x0000000003350000-0x0000000003362000-memory.dmp

Filesize
72KB

Download
memory/4264-7-0x0000000003310000-0x0000000003332000-memory.dmp

Filesize
136KB

Download
memory/4264-6-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/4264-5-0x0000000005B00000-0x0000000005B0A000-memory.dmp

Filesize
40KB

Download
memory/4264-0-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/4264-3-0x0000000005950000-0x00000000059E2000-memory.dmp

Filesize
584KB

Download
memory/4264-2-0x0000000005E60000-0x0000000006404000-memory.dmp

Filesize
5.6MB

Download
memory/4264-1-0x0000000000EE0000-0x0000000000F42000-memory.dmp

Filesize
392KB

Download