asyncrat | 10202f0fd6a60f0a0fba0c1f6cc945d49b4d63092732cb9a57f191b7355e7748

Analysis

max time kernel
13s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 15:01

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General

Target
mko2.exe
Size 47KB
Sample260710-sedsdady4w
SHA256 10202f0fd6a60f0a0fba0c1f6cc945d49b4d63092732cb9a57f191b7355e7748
MD5 bcb773acf14d7fbdaaaa022834111582
SHA1 5d95315a2a3a7f19e420ab22b816393201f1e312
SHA512 0f7dad22152a192108f1d4d1efef4fb933c14d3d7a7fdac5b84d0b83b6a5d9cb7c668549466c893baa7e5eb5e1f169f81e64facacef5af6899960a33ac65c093
SSDEEP 768:kuiWNTdFHLBWUZzGrmo2qrIMt4JiOGAZ1DfkVVPIdaMO0B0bDJ3OYoAYPR0402r+:kuiWNTdB+2AKYeZ1DsVydaMbWbDJ3Ho4
TLSH
T143234D007BE9812BF27E4F7898F2224586BAF2673703D64D1DC442D75623FC2CA525EA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

555win-vn01.site:8443
555win-vn01.site:81
555win-vn01.site:7878
555win-vn01.site:8787
555win-vn01.site:6789
555win-vn01.site:80
555win-vn01.site:8080
555win-vn01.site:443
k7o.uk.net:8443
k7o.uk.net:81
k7o.uk.net:7878
k7o.uk.net:8787
k7o.uk.net:6789
k7o.uk.net:80
k7o.uk.net:8080
k7o.uk.net:443

Mutex

S4LNVFZLLdyX

Attributes

delay
3
install
true
install_file
svchost.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/0x000e00000001c569-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1588	svchost.exe
2596	svchost.exe

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

System Information Discovery
T1082

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	mko2.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4588	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
6020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe
4996	mko2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	mko2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 4144	4996	mko2.exe	87
PID 4996 wrote to memory of 4796	4996	mko2.exe	89
PID 4144 wrote to memory of 6020	4144	cmd.exe	91
PID 4796 wrote to memory of 4588	4796	cmd.exe	92
PID 4796 wrote to memory of 2596	4796	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\mko2.exe
"C:\Users\Admin\AppData\Local\Temp\mko2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:6020
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF49C.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4588
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2596

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1588

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpF49C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF49C.tmp.bat
Size 151B
SHA256 e47d6afb0f8c3145dc840492c3225a88a90735220dd1ce257bdf33d4554de53c
MD5 c5975cb013eb6199880dfba648be8a80
SHA1 119499efd67e49358eebd8ba5289a084f37411d6
SHA512 5b2b30ff9bf09134fe056df9ea3260d636cf4437f6b1585414807f511996cf09a8c4e8c95e034ca923f52dc378d4bd3ed77844bc2bbe997f1a4f4f2544b74e18
TLSH
T159C02B4271C5FB0E2846145302FAD48D92B26C9D3F40BF84C304885D278044CF4EE341
MD5 SHA1 SHA512 TLSH

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 47KB
SHA256 10202f0fd6a60f0a0fba0c1f6cc945d49b4d63092732cb9a57f191b7355e7748
MD5 bcb773acf14d7fbdaaaa022834111582
SHA1 5d95315a2a3a7f19e420ab22b816393201f1e312
SHA512 0f7dad22152a192108f1d4d1efef4fb933c14d3d7a7fdac5b84d0b83b6a5d9cb7c668549466c893baa7e5eb5e1f169f81e64facacef5af6899960a33ac65c093
SSDEEP 768:kuiWNTdFHLBWUZzGrmo2qrIMt4JiOGAZ1DfkVVPIdaMO0B0bDJ3OYoAYPR0402r+:kuiWNTdB+2AKYeZ1DsVydaMbWbDJ3Ho4
TLSH
T143234D007BE9812BF27E4F7898F2224586BAF2673703D64D1DC442D75623FC2CA525EA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1588-13-0x0000000075040000-0x00000000757FC000-memory.dmp

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memory/1588-15-0x0000000075040000-0x00000000757FC000-memory.dmp

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memory/4996-0-0x0000000075052000-0x0000000075053000-memory.dmp

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memory/4996-1-0x0000000000BC0000-0x0000000000BD2000-memory.dmp

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memory/4996-2-0x0000000075040000-0x00000000757FC000-memory.dmp

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memory/4996-3-0x00000000056B0000-0x0000000005716000-memory.dmp

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memory/4996-4-0x0000000005B70000-0x0000000005C0C000-memory.dmp

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memory/4996-10-0x0000000075040000-0x00000000757FC000-memory.dmp

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