asyncrat | f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e

Analysis

max time kernel
148s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/07/2026, 14:36

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General

Target
f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
Size 45KB
Sample260721-ry3p6sba39
SHA256 f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e
MD5 9f4f5274a0fa10509e5173e79cf12475
SHA1 5eb08ea341fabb90c9a7065fd5b8380ba9bd93db
SHA512 6015b65ff2c3cd8b373c6c2120d6c54693306e55d48127cd07b21bef0778f221d04906aeca8f403cd779f72b2891122a16e0070b3529bbfab0ab622092bc9446
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1/qyx0OFUwdrxIkDPIEzjb6gX3iL7dWIXqjUfIFBDZW:cuR0JTPjY2CqKTNME3btXSrXq1dUx
TLSH
T10A233A003BE9812BF6BF4F78A9F26245467BF2632603D64A1CC411DB5713FC69A426ED
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

dagatructiep.sh:80
dagatructiep.sh:22
dagatructiep.sh:8080
dagatructiep.sh:8880
dagatructiep.sh:2052
dagatructiep.sh:2082
dagatructiep.sh:2086
dagatructiep.sh:2095
dagatructiep.sh:443
dagatructiep.sh:2053
dagatructiep.sh:2083
dagatructiep.sh:2087
dagatructiep.sh:2096
dagatructiep.sh:8443
www.dagatructiep.sh:80
www.dagatructiep.sh:22
www.dagatructiep.sh:8080
www.dagatructiep.sh:8880
www.dagatructiep.sh:2052
www.dagatructiep.sh:2082
www.dagatructiep.sh:2086
www.dagatructiep.sh:2095
www.dagatructiep.sh:443
www.dagatructiep.sh:2053
www.dagatructiep.sh:2083
www.dagatructiep.sh:2087
www.dagatructiep.sh:2096
www.dagatructiep.sh:8443
malware.dagatructiep.sh:80
malware.dagatructiep.sh:22
malware.dagatructiep.sh:8080
malware.dagatructiep.sh:8880
malware.dagatructiep.sh:2052
malware.dagatructiep.sh:2082
malware.dagatructiep.sh:2086
malware.dagatructiep.sh:2095
malware.dagatructiep.sh:443
malware.dagatructiep.sh:2053
malware.dagatructiep.sh:2083
malware.dagatructiep.sh:2087
malware.dagatructiep.sh:2096
malware.dagatructiep.sh:8443
formbook.dagatructiep.sh:80
formbook.dagatructiep.sh:22
formbook.dagatructiep.sh:8080
formbook.dagatructiep.sh:8880
formbook.dagatructiep.sh:2052
formbook.dagatructiep.sh:2082
formbook.dagatructiep.sh:2086
formbook.dagatructiep.sh:2095
formbook.dagatructiep.sh:443
formbook.dagatructiep.sh:2053
formbook.dagatructiep.sh:2083
formbook.dagatructiep.sh:2087
formbook.dagatructiep.sh:2096
formbook.dagatructiep.sh:8443

Mutex

15ABBAuqtlKV

Attributes

delay
0
install
true
install_file
atk0.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/0x000d00000001c61f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4252	atk0.exe
5656	atk0.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
1636	cmd.exe
3696	cmd.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	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	atk0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	atk0.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3648	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
3260	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 1636	2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe	88
PID 2632 wrote to memory of 3696	2632	f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe	90
PID 3696 wrote to memory of 3648	3696	cmd.exe	92
PID 1636 wrote to memory of 3260	1636	cmd.exe	93
PID 3696 wrote to memory of 5656	3696	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe
"C:\Users\Admin\AppData\Local\Temp\f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "atk0" /tr '"C:\Users\Admin\AppData\Roaming\atk0.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1636
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "atk0" /tr '"C:\Users\Admin\AppData\Roaming\atk0.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3260
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC92.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3696
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3648
- - C:\Users\Admin\AppData\Roaming\atk0.exe
    "C:\Users\Admin\AppData\Roaming\atk0.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5656

C:\Users\Admin\AppData\Roaming\atk0.exe
"C:\Users\Admin\AppData\Roaming\atk0.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4252

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpAC92.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpAC92.tmp.bat
Size 148B
SHA256 bd7b1c44b951a3a6d5661ed61ef19a9acc3f1822e0b8c5a25f47864efc16596f
MD5 f32f485fa14be5b07dca81238c893b2b
SHA1 ee31ca79a1d5c885aba10a7237154ba3ab3fb950
SHA512 0c3bfad54eeddb41e35cb40d2f7b4723e2a555a89e750f477403d3e6e590d187fc027911306879b0805d74b6c4fd0625dde17b9e7892487b9ae8e64b6a6f75a0
TLSH
T1D1C02B8255C5EA1E2A0A141306FBD48FA17A6C5D3FC0BB00CB0CC15D528085CF4D9341
MD5 SHA1 SHA512 TLSH

Submit Download

atk0.exe

Path C:\Users\Admin\AppData\Roaming\atk0.exe
Size 45KB
SHA256 f66d784338fefdcdc9e255b06187152a97548fc2a08907f53e445fd79c018d9e
MD5 9f4f5274a0fa10509e5173e79cf12475
SHA1 5eb08ea341fabb90c9a7065fd5b8380ba9bd93db
SHA512 6015b65ff2c3cd8b373c6c2120d6c54693306e55d48127cd07b21bef0778f221d04906aeca8f403cd779f72b2891122a16e0070b3529bbfab0ab622092bc9446
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1/qyx0OFUwdrxIkDPIEzjb6gX3iL7dWIXqjUfIFBDZW:cuR0JTPjY2CqKTNME3btXSrXq1dUx
TLSH
T10A233A003BE9812BF6BF4F78A9F26245467BF2632603D64A1CC411DB5713FC69A426ED
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2632-0-0x0000000074372000-0x0000000074373000-memory.dmp

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memory/2632-1-0x0000000000240000-0x0000000000252000-memory.dmp

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memory/2632-2-0x0000000074360000-0x0000000074B1C000-memory.dmp

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memory/2632-3-0x0000000004C90000-0x0000000004D2C000-memory.dmp

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memory/2632-9-0x0000000074360000-0x0000000074B1C000-memory.dmp

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memory/4252-12-0x0000000074360000-0x0000000074B1C000-memory.dmp

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memory/4252-14-0x0000000074360000-0x0000000074B1C000-memory.dmp

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