asyncrat | e4348ea6b4e98e96760105b7b9c9612370ac3a338bdca989e98fff87612c4d3d

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17/03/2024, 02:18

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General

Target
e4348ea6b4e98e96760105b7b9c9612370ac3a338bdca989e98fff87612c4d3d.dll
Size 1.9MB
Sample240317-crdp5scc26
SHA256 e4348ea6b4e98e96760105b7b9c9612370ac3a338bdca989e98fff87612c4d3d
MD5 042db56a76d6279a04cc3e61a3320ccf
SHA1 f614ceff642b10050d047a6d6ea3791d4cf73dfb
SHA512 81fbb6ca49a37963ee4281dc2063bc90e7975455b914a93d0bc3f89164a8f62b0cda644b1e4acda30145131318a3cd301f726339479b18a1a19d0c22f25d78c6
SSDEEP 24576:ew7m5lrAYj8HFqvc5toC27U99ie7i34Ft5PTAGj+K1LJNhIyHc:cN8H0vc5tbq4Ft5rjj+K1LJ0p
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat me spread new new new persistence rat

Malware Config

Extracted

Family

asyncrat

Version

AsyncRAT

Botnet

me spread new new new

pepecasas123.net:4608
pepecasas123.mywire.org:4608

Mutex

AsyncMutex_2382

Attributes

delay
3
install
false
install_file
pepe.exe
install_folder
%AppData%

aes.plain

Signatures

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

Detects file containing reversed ASEP Autorun registry keys 1 IoCs

resource	yara_rule
behavioral2/memory/2952-6-0x0000000000B30000-0x0000000000B46000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*Chrome = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\VIVA_01.dll,EntryPoint"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2052 set thread context of 2952	2052	rundll32.exe	104

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2952	vbc.exe
2952	vbc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2952	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4168 wrote to memory of 2052	4168	rundll32.exe	87
PID 4168 wrote to memory of 2052	4168	rundll32.exe	87
PID 4168 wrote to memory of 2052	4168	rundll32.exe	87
PID 2052 wrote to memory of 2728	2052	rundll32.exe	102
PID 2052 wrote to memory of 2728	2052	rundll32.exe	102
PID 2052 wrote to memory of 2728	2052	rundll32.exe	102
PID 2052 wrote to memory of 2952	2052	rundll32.exe	104
PID 2052 wrote to memory of 2952	2052	rundll32.exe	104
PID 2052 wrote to memory of 2952	2052	rundll32.exe	104
PID 2052 wrote to memory of 2952	2052	rundll32.exe	104
PID 2052 wrote to memory of 2952	2052	rundll32.exe	104
PID 2728 wrote to memory of 1672	2728	cmd.exe	105
PID 2728 wrote to memory of 1672	2728	cmd.exe	105
PID 2728 wrote to memory of 1672	2728	cmd.exe	105

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e4348ea6b4e98e96760105b7b9c9612370ac3a338bdca989e98fff87612c4d3d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4168
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e4348ea6b4e98e96760105b7b9c9612370ac3a338bdca989e98fff87612c4d3d.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2728
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      PID:1672
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2052-7-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-1-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-2-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-3-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-4-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-5-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2052-0-0x0000000010000000-0x00000000101F6000-memory.dmp

Download

memory/2952-8-0x00000000744E0000-0x0000000074C90000-memory.dmp

Download

memory/2952-6-0x0000000000B30000-0x0000000000B46000-memory.dmp

Download

memory/2952-9-0x0000000005090000-0x00000000050A0000-memory.dmp

Download

memory/2952-10-0x00000000057A0000-0x0000000005D44000-memory.dmp

Download

memory/2952-11-0x00000000053E0000-0x0000000005472000-memory.dmp

Download

memory/2952-12-0x00000000053D0000-0x00000000053DA000-memory.dmp

Download

memory/2952-15-0x00000000065F0000-0x000000000668C000-memory.dmp

Download

memory/2952-16-0x00000000060C0000-0x0000000006126000-memory.dmp

Download

memory/2952-17-0x00000000744E0000-0x0000000074C90000-memory.dmp

Download

memory/2952-18-0x0000000005090000-0x00000000050A0000-memory.dmp

Download