asyncrat | 63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
13-07-2024 12:34

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General

Target

63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe
Size

598KB
MD5

fca56524754f35dbf5ecd8dd52528374
SHA1

d0479c8d2ab4750eebfec950e52e84227ea698f5
SHA256

63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5
SHA512

02562b7339fe6cd837c1b0c820ea2323c67d9e3a1b402c8fd629794927065280d06624c1e919c891d7c76756910e9cfa4b6a515bb5d2e49f08576196c49e3e43
SSDEEP

6144:WFJ68bEdt1fiYcOwmZRC/HuBZpzN5/l/J7/lAA9P+mVF:WrP8tRupmZRCPuBP/ll/l39Br

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\\FiperG.exe\","	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe
4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe
Token: SeDebugPrivilege	1036	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87
PID 4356 wrote to memory of 1036	4356	63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe	87

C:\Users\Admin\AppData\Local\Temp\63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe
"C:\Users\Admin\AppData\Local\Temp\63b4600f00336a214819ed87c27c6ca6f809c5fbe12cd2a871447f72670846f5.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4356
- 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:1036

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/1036-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1036-16-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1036-15-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1036-14-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1036-13-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-3-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-6-0x0000000034E50000-0x0000000034EB6000-memory.dmp

Filesize
408KB

Download
memory/4356-7-0x0000000035660000-0x00000000356F2000-memory.dmp

Filesize
584KB

Download
memory/4356-8-0x0000000035CB0000-0x0000000036254000-memory.dmp

Filesize
5.6MB

Download
memory/4356-5-0x0000000005090000-0x00000000050DC000-memory.dmp

Filesize
304KB

Download
memory/4356-4-0x0000000004FF0000-0x0000000005022000-memory.dmp

Filesize
200KB

Download
memory/4356-12-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4356-2-0x0000000004FA0000-0x0000000004FF2000-memory.dmp

Filesize
328KB

Download
memory/4356-1-0x00000000005C0000-0x000000000065C000-memory.dmp

Filesize
624KB

Download