asyncrat | c0885fb20ec6822ecf51e73751f0192f09f0e747ca20f9b75458222bc4c685e5

Resubmissions

28-07-2024 05:32

240728-f8nhfstgma 10

28-07-2024 05:20

240728-f1k3cszemj 10

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
28-07-2024 05:32

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General

Target

Rb (1).exe
Size

8.0MB
MD5

ae4ff56ceb6716a8f9338e084f7701d4
SHA1

4cabe539d621d59f41a481ffac48a8cf8592c14d
SHA256

c0885fb20ec6822ecf51e73751f0192f09f0e747ca20f9b75458222bc4c685e5
SHA512

72fee97a9af3d94699af86d85401fc1d2be5b4310661f0860ae78fecc00d8da0aa76554785ec64678d3e98f5040a888f1e7324f11cb7c1c966a6b698d3394838
SSDEEP

1536:M9RvNeRcklHCFmD3IWvPdb1SzXWTkDxaaDE3Zx7FkhDpqFUUQDS+0basrdVsQDQ:cRvi/NIWvPdb2XoJZZmhDpl/uaWdVsv

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

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 1936 set thread context of 2716	1936	Rb (1).exe	86

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	Rb (1).exe
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

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
656	schtasks.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1936	Rb (1).exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2716	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 2716	1936	Rb (1).exe	86
PID 1936 wrote to memory of 1692	1936	Rb (1).exe	87
PID 1936 wrote to memory of 1692	1936	Rb (1).exe	87
PID 1936 wrote to memory of 1692	1936	Rb (1).exe	87
PID 1936 wrote to memory of 4468	1936	Rb (1).exe	89
PID 1936 wrote to memory of 4468	1936	Rb (1).exe	89
PID 1936 wrote to memory of 4468	1936	Rb (1).exe	89
PID 4468 wrote to memory of 656	4468	cmd.exe	91
PID 4468 wrote to memory of 656	4468	cmd.exe	91
PID 4468 wrote to memory of 656	4468	cmd.exe	91
PID 1936 wrote to memory of 3904	1936	Rb (1).exe	92
PID 1936 wrote to memory of 3904	1936	Rb (1).exe	92
PID 1936 wrote to memory of 3904	1936	Rb (1).exe	92

C:\Users\Admin\AppData\Local\Temp\Rb (1).exe
"C:\Users\Admin\AppData\Local\Temp\Rb (1).exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1936
- 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:2716
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\svc"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\svc\svc.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\svc\svc.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:656
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\Rb (1).exe" "C:\Users\Admin\AppData\Local\Temp\svc\svc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Scripting

T1064

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/1936-8-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/1936-1-0x0000000000960000-0x000000000098E000-memory.dmp

Filesize
184KB

Download
memory/1936-2-0x0000000005880000-0x0000000005E24000-memory.dmp

Filesize
5.6MB

Download
memory/1936-3-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/1936-0-0x000000007498E000-0x000000007498F000-memory.dmp

Filesize
4KB

Download
memory/2716-12-0x0000000005690000-0x000000000572C000-memory.dmp

Filesize
624KB

Download
memory/2716-6-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/2716-9-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/2716-5-0x00000000007B0000-0x00000000007C2000-memory.dmp

Filesize
72KB

Download
memory/2716-13-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/2716-14-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/2716-15-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/2716-16-0x00000000052D0000-0x0000000005346000-memory.dmp

Filesize
472KB

Download
memory/2716-17-0x0000000005250000-0x00000000052B8000-memory.dmp

Filesize
416KB

Download
memory/2716-18-0x0000000005B20000-0x0000000005B3E000-memory.dmp

Filesize
120KB

Download
memory/2716-19-0x00000000069F0000-0x0000000006A82000-memory.dmp

Filesize
584KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads