asyncrat | 78e20b9f9e36578c45d1c0e28e68299620ce085953ab3e468ab10f633e586cfc

Analysis

max time kernel
127s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
12-07-2024 06:04

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General

Target

update.ps1
Size

250KB
MD5

85a84eff8bf73e4661824726438e21ee
SHA1

a2b5401bbe15125c0d8d9419d87425366c991fa8
SHA256

78e20b9f9e36578c45d1c0e28e68299620ce085953ab3e468ab10f633e586cfc
SHA512

e93cb30222036ef2f47dc27cc3d4c6195e6c57d12728e4955707dba69d38b469a0e7242729cebe3d59afe312c3db5bdf20e623ea939ba7f8085d9435b14bcfb0
SSDEEP

6144:07TZQO29BnRDqjNITiIy0VN8Iq1e0gOYPWSOoHf9KU9Gw7:YCO4EOpQe0gO5M7

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

64.112.85.3:4449

Mutex

ufaaryvntrlyhwcwq

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 516	1688	powershell.exe	84

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1688	powershell.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1688	powershell.exe
1688	powershell.exe
516	aspnet_regbrowsers.exe
516	aspnet_regbrowsers.exe
516	aspnet_regbrowsers.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	powershell.exe
Token: SeDebugPrivilege	516	aspnet_regbrowsers.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
516	aspnet_regbrowsers.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84
PID 1688 wrote to memory of 516	1688	powershell.exe	84

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\update.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ymsnsnad.m0e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/516-26-0x0000000005FC0000-0x000000000605C000-memory.dmp

Filesize
624KB

Download
memory/516-28-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-22-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-24-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-23-0x0000000005180000-0x0000000005212000-memory.dmp

Filesize
584KB

Download
memory/516-14-0x000000006DDE0000-0x000000006DE00000-memory.dmp

Filesize
128KB

Download
memory/516-17-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/516-19-0x000000006DDE0000-0x000000006DDF8000-memory.dmp

Filesize
96KB

Download
memory/516-33-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-20-0x0000000005430000-0x00000000059D4000-memory.dmp

Filesize
5.6MB

Download
memory/516-32-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-31-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/516-30-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/516-25-0x0000000004E30000-0x0000000004E3A000-memory.dmp

Filesize
40KB

Download
memory/516-27-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/1688-0-0x00007FF97A5A3000-0x00007FF97A5A5000-memory.dmp

Filesize
8KB

Download
memory/1688-10-0x000001AFB1E50000-0x000001AFB1E72000-memory.dmp

Filesize
136KB

Download
memory/1688-12-0x00007FF97A5A0000-0x00007FF97B061000-memory.dmp

Filesize
10.8MB

Download
memory/1688-13-0x000001AFB20E0000-0x000001AFB2114000-memory.dmp

Filesize
208KB

Download
memory/1688-11-0x00007FF97A5A0000-0x00007FF97B061000-memory.dmp

Filesize
10.8MB

Download
memory/1688-18-0x00007FF97A5A0000-0x00007FF97B061000-memory.dmp

Filesize
10.8MB

Download