asyncrat | 63b0e303a05ad2eb2a93e2f9cd96e50361cf1e0d29f9cab8b0a98d1185347f8a

Analysis

max time kernel
296s
max time network
304s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
27-07-2024 13:26

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General

Target

runvm.bat
Size

49B
MD5

1ab4dc21dcb24f5b7345ce5c0b794b82
SHA1

18f722ad31ee9d81181f8ca2cef60a70b03bb030
SHA256

ac2103023d146e62c3b708384ae0ed044d17258901272068ef93c15c9f5aa06e
SHA512

83f1d566b8f5b7875811762433cf7c2722225c789a3b917b2c4184a442d9d6af9c6fe703ce354d223824cfe8ed86e6e7780ec02008c093298fbcd3c08840dbdd

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Default

94.156.79.190:4449

193.222.96.24:4449

Mutex

aqswvfsywrpgi

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral8/memory/928-2-0x0000000005090000-0x00000000050A8000-memory.dmp	family_asyncrat

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vm.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe
928	vm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	928	vm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
928	vm.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 928	3312	cmd.exe	82
PID 3312 wrote to memory of 928	3312	cmd.exe	82
PID 3312 wrote to memory of 928	3312	cmd.exe	82

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\runvm.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Users\Admin\AppData\Local\Temp\vm.exe
  "vm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/928-0-0x00000000026E0000-0x00000000026FA000-memory.dmp

Filesize
104KB

Download
memory/928-1-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/928-2-0x0000000005090000-0x00000000050A8000-memory.dmp

Filesize
96KB

Download
memory/928-3-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-4-0x0000000005170000-0x0000000005716000-memory.dmp

Filesize
5.6MB

Download
memory/928-5-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-6-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-8-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-9-0x0000000005BD0000-0x0000000005C62000-memory.dmp

Filesize
584KB

Download
memory/928-10-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-11-0x0000000005C90000-0x0000000005C9A000-memory.dmp

Filesize
40KB

Download
memory/928-12-0x0000000004F90000-0x0000000004FF4000-memory.dmp

Filesize
400KB

Download
memory/928-14-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/928-15-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download
memory/928-17-0x0000000074C40000-0x00000000753F1000-memory.dmp

Filesize
7.7MB

Download