asyncrat | 7ca2ea6fe909eba4e36a7c8bcdc3593160088dffa65a4ddf845f397e6c513ea2

General

Target

RobloxPlayerPatcher.exe
Size

25.0MB
MD5

cf5ff6654fb7ee424211a7b6c9625ab9
SHA1

84080a7813a73b0a2a6e8881c7bd07de048a325c
SHA256

7ca2ea6fe909eba4e36a7c8bcdc3593160088dffa65a4ddf845f397e6c513ea2
SHA512

52aaeac8181db5ad56f8bdb50a0bdc71dce8f75e3a95fc6a2fb9c85f05cf9cf984131f61f8dd1081be055c7b5f25e0a850def1adcdcad433c4aecf2489a3ebb7
SSDEEP

6144:6/M+b97tjVcBqY+TnB8FMNy4yhGuG8fffM5Q:8c9+TBHIGuGGEq

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

qa.riu.one:1420

Mutex

sVDhayko8Fn8

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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 2320	3312	RobloxPlayerPatcher.exe	100

System Location Discovery: System Language Discovery 1 TTPs 6 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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RobloxPlayerPatcher.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1720	schtasks.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3312	RobloxPlayerPatcher.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 2320	3312	RobloxPlayerPatcher.exe	100
PID 3312 wrote to memory of 3236	3312	RobloxPlayerPatcher.exe	101
PID 3312 wrote to memory of 3236	3312	RobloxPlayerPatcher.exe	101
PID 3312 wrote to memory of 3236	3312	RobloxPlayerPatcher.exe	101
PID 3312 wrote to memory of 3760	3312	RobloxPlayerPatcher.exe	103
PID 3312 wrote to memory of 3760	3312	RobloxPlayerPatcher.exe	103
PID 3312 wrote to memory of 3760	3312	RobloxPlayerPatcher.exe	103
PID 3760 wrote to memory of 1720	3760	cmd.exe	105
PID 3760 wrote to memory of 1720	3760	cmd.exe	105
PID 3760 wrote to memory of 1720	3760	cmd.exe	105
PID 3312 wrote to memory of 4712	3312	RobloxPlayerPatcher.exe	106
PID 3312 wrote to memory of 4712	3312	RobloxPlayerPatcher.exe	106
PID 3312 wrote to memory of 4712	3312	RobloxPlayerPatcher.exe	106

C:\Users\Admin\AppData\Local\Temp\RobloxPlayerPatcher.exe
"C:\Users\Admin\AppData\Local\Temp\RobloxPlayerPatcher.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2320
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\svc"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3236
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svc\svc.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3760
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svc\svc.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1720
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\RobloxPlayerPatcher.exe" "C:\Users\Admin\AppData\Roaming\svc\svc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

Scripting

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2320-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2320-16-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/2320-15-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/2320-12-0x0000000005680000-0x000000000571C000-memory.dmp

Filesize
624KB

Download
memory/2320-11-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/2320-10-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3312-3-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3312-6-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3312-9-0x0000000001040000-0x00000000010D2000-memory.dmp

Filesize
584KB

Download
memory/3312-5-0x000000007457E000-0x000000007457F000-memory.dmp

Filesize
4KB

Download
memory/3312-4-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/3312-0-0x000000007457E000-0x000000007457F000-memory.dmp

Filesize
4KB

Download
memory/3312-14-0x0000000074570000-0x0000000074D20000-memory.dmp

Filesize
7.7MB

Download
memory/3312-2-0x00000000056B0000-0x0000000005C54000-memory.dmp

Filesize
5.6MB

Download
memory/3312-1-0x00000000006D0000-0x000000000070E000-memory.dmp

Filesize
248KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads