asyncrat | 6629a8f1a34c98b93c42120c1b2d75866e0804de42055f0cca1e9e6cc4b5313f

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 10:19

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General

Target
Dls Game Update.exe
Size 193KB
Sample260710-mcq22aav2z
SHA256 6629a8f1a34c98b93c42120c1b2d75866e0804de42055f0cca1e9e6cc4b5313f
MD5 fcfb8eb400fd49276e69817f422b891a
SHA1 b2126e216683b8ae29a84dd9d1f8424a2ba876fd
SHA512 a46171c792d9ffcb254596e2ac283baff75dbcaf05a6bdf9a3f703e3fe08bc5a14c86cb48d840dcb1ba11af8ffcf1a9dbd61af52f5c5edd8fa8d558c2d4d991c
SSDEEP 6144:/uAAJU+3bfwdFtnPqk14X+Q6WGxzY8xOG:/7+sv5vSA/
TLSH
T1B614071E37CD1306C9A9AAF088EB02934F4E7FE6D7D6CA42DF36311A45321A0947F959
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

dls.ru.com:80
dls.ru.com:443

Mutex

YKuGf7gYQAtB

Attributes

delay
3
install
true
install_file
GameUpdate.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/0x000e00000001c550-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1668	GameUpdate.exe
3352	GameUpdate.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GameUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GameUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dls Game Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5792	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
4788	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe
5772	Dls Game Update.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5772	Dls Game Update.exe
Token: SeDebugPrivilege	1668	GameUpdate.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5772 wrote to memory of 2576	5772	Dls Game Update.exe	86
PID 5772 wrote to memory of 4036	5772	Dls Game Update.exe	88
PID 4036 wrote to memory of 5792	4036	cmd.exe	90
PID 2576 wrote to memory of 4788	2576	cmd.exe	91
PID 4036 wrote to memory of 3352	4036	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\Dls Game Update.exe
"C:\Users\Admin\AppData\Local\Temp\Dls Game Update.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GameUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GameUpdate.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "GameUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GameUpdate.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4788
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF2A3.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4036
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5792
- - C:\Users\Admin\AppData\Roaming\GameUpdate.exe
    "C:\Users\Admin\AppData\Roaming\GameUpdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3352

C:\Users\Admin\AppData\Roaming\GameUpdate.exe
"C:\Users\Admin\AppData\Roaming\GameUpdate.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1668

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

tmpF2A3.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF2A3.tmp.bat
Size 154B
SHA256 78d776c7b323514bdf8a346a8d96603bc3b7eadef23ac63a0d740fa0d3b81004
MD5 ca4c99b7f9ec44e3ecc45d29ceb12da5
SHA1 d5b0bed697a14d59ddfac436a13ed2015fa9926c
SHA512 ea5a530f6ce49a47904cbbe72662cebfcab6d2073c9b28105b07cc79df3dc6c8697dc50745cac2478c954bd391a1cd5c5d9cbf767d5a47f0520637ebd1e15eaa
TLSH
T1A4C02B4265C5FE1E3805241302FEE8CCB1B26C693F88BB10C708445E6280468F4DD386
MD5 SHA1 SHA512 TLSH

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GameUpdate.exe

Path C:\Users\Admin\AppData\Roaming\GameUpdate.exe
Size 193KB
SHA256 6629a8f1a34c98b93c42120c1b2d75866e0804de42055f0cca1e9e6cc4b5313f
MD5 fcfb8eb400fd49276e69817f422b891a
SHA1 b2126e216683b8ae29a84dd9d1f8424a2ba876fd
SHA512 a46171c792d9ffcb254596e2ac283baff75dbcaf05a6bdf9a3f703e3fe08bc5a14c86cb48d840dcb1ba11af8ffcf1a9dbd61af52f5c5edd8fa8d558c2d4d991c
SSDEEP 6144:/uAAJU+3bfwdFtnPqk14X+Q6WGxzY8xOG:/7+sv5vSA/
TLSH
T1B614071E37CD1306C9A9AAF088EB02934F4E7FE6D7D6CA42DF36311A45321A0947F959
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1668-12-0x0000000074E10000-0x00000000755CC000-memory.dmp

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memory/1668-14-0x0000000074E10000-0x00000000755CC000-memory.dmp

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memory/5772-0-0x0000000074E22000-0x0000000074E23000-memory.dmp

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memory/5772-1-0x00000000005E0000-0x0000000000616000-memory.dmp

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memory/5772-2-0x0000000074E10000-0x00000000755CC000-memory.dmp

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memory/5772-3-0x00000000050F0000-0x000000000518C000-memory.dmp

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memory/5772-9-0x0000000074E10000-0x00000000755CC000-memory.dmp

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