asyncrat | 07fe77bfc9a7471d905aa46794dea97ecde0f3b1c167fce78eb79700245d0010

Analysis

max time kernel
12s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/10/2026, 12:18

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
mko2.exe
Size 47KB
Sample261003-pgmarayx6p
SHA256 07fe77bfc9a7471d905aa46794dea97ecde0f3b1c167fce78eb79700245d0010
MD5 881ac6e7cf0a683fd568c417d1dfd660
SHA1 2bf574539b248e1f0efad309124587ddbf066140
SHA512 e0d473d39959e4770aaf04a2c35ee80f5a8c60350378b118fdb502eb64a767f6904c62dae753c6406b8736c73bab352598c1dccff3b640ecad475e6ce240947c
SSDEEP 768:guYHKTsufqG9vSLjWUvlPRmo2qbUmlegLAYsGZ9hiHPIzvcxD20brqmAADlQHOzG:guYHKTsjMvSX2ZngLljLYZbrqm9DOuzG
TLSH
T1B2232A0077E9C22AF2BE4F7899F222458677F6672603D64E1CC441975B13FC29A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

vn789win.top defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

vn789win.top

vn789win.top:443

Mutex

cxlda4TzCZs5

Attributes

delay
3
install
true
install_file
ChromeUpdate.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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
behavioral2/files/0x000e00000001c514-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3716	ChromeUpdate.exe
2388	ChromeUpdate.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5416	cmd.exe
1304	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	ChromeUpdate.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	mko2.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	mko2.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	ChromeUpdate.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ChromeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ChromeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mko2.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1380	timeout.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
2808	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe
5060	mko2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5060	mko2.exe
Token: SeDebugPrivilege	3716	ChromeUpdate.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 5416	5060	mko2.exe	90
PID 5060 wrote to memory of 1304	5060	mko2.exe	92
PID 1304 wrote to memory of 1380	1304	cmd.exe	94
PID 5416 wrote to memory of 2808	5416	cmd.exe	95
PID 1304 wrote to memory of 2388	1304	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\mko2.exe
"C:\Users\Admin\AppData\Local\Temp\mko2.exe"
1⤵
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5416
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2808
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7FE4.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1304
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1380
- - C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
    "C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2388

C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"
1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3716

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:2888

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp7FE4.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7FE4.tmp.bat
Size 156B
SHA256 77767ccf7d07922a28784f2d733f1de41ce372b513c117b92842941dd7622a02
MD5 e5eab105a48100dd5c3e2d85b9257112
SHA1 65cb9be9ffd3506659809be57121486e2dadbdb9
SHA512 477dc0e7d3fabd509ad0321ab18dde1134b0787bb73856eb4c47093e96a6f469af2e47213fcdbe6cd91fee582ab20b2fd2f4128f9e0fee891814c0b917957253
TLSH
T1D1C08C4261C6EE5E2905642306BA958C99B26C9A3E48BF00C304440A6280848E8DD382
MD5 SHA1 SHA512 TLSH

Submit Download

ChromeUpdate.exe

Path C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
Size 47KB
SHA256 07fe77bfc9a7471d905aa46794dea97ecde0f3b1c167fce78eb79700245d0010
MD5 881ac6e7cf0a683fd568c417d1dfd660
SHA1 2bf574539b248e1f0efad309124587ddbf066140
SHA512 e0d473d39959e4770aaf04a2c35ee80f5a8c60350378b118fdb502eb64a767f6904c62dae753c6406b8736c73bab352598c1dccff3b640ecad475e6ce240947c
SSDEEP 768:guYHKTsufqG9vSLjWUvlPRmo2qbUmlegLAYsGZ9hiHPIzvcxD20brqmAADlQHOzG:guYHKTsjMvSX2ZngLljLYZbrqm9DOuzG
TLSH
T1B2232A0077E9C22AF2BE4F7899F222458677F6672603D64E1CC441975B13FC29A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3716-13-0x0000000075070000-0x000000007582C000-memory.dmp

Download

memory/3716-15-0x0000000075070000-0x000000007582C000-memory.dmp

Download

memory/5060-0-0x0000000075082000-0x0000000075083000-memory.dmp

Download

memory/5060-1-0x0000000000420000-0x0000000000432000-memory.dmp

Download

memory/5060-2-0x0000000075070000-0x000000007582C000-memory.dmp

Download

memory/5060-3-0x0000000004EE0000-0x0000000004F46000-memory.dmp

Download

memory/5060-4-0x00000000053B0000-0x000000000544C000-memory.dmp

Download

memory/5060-10-0x0000000075070000-0x000000007582C000-memory.dmp

Download