asyncrat | 7a02837baee58bb02a22e197e36bcaa3d354b6f265e05ec6cc0771e7ada23b1f

Analysis

max time kernel
149s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
08/03/2026, 06:51

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General

Target
Copilot.exe
Size 46KB
Sample260308-hmk7baat8m
SHA256 7a02837baee58bb02a22e197e36bcaa3d354b6f265e05ec6cc0771e7ada23b1f
MD5 05c60f36f19d288f3e6cbaa540d595ef
SHA1 a6a3b13e723bef24221dff5e100b7cb73a6ab777
SHA512 033b64db8e66c8d2fed8855554fc95624982d8ff262ca27d5b5377cfd41189acc23cd1f0e9d656d98f52b1667d60f0831422b3ccb9cfb6bcec6ce7111a309b87
SSDEEP 768:JaIFbILXCaRGUxv0wSGGx8Q4u2M/6TJr1PMJIjb0g47FxMltANmBuAKUjLIjmM5q:JaIFsJRp8d8/MKbb4hxMHqspIiM5bff+
TLSH
T14E233C003BE9C16AF2BD4F7899F2720546B9F2572603D68E1C8412DA5613FC6DA426FE
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

homeamulet.com:80
www.homeamulet.com:80
malware.homeamulet.com:80
email.homeamulet.com:80
newmail.homeamulet.com:80
mx5.homeamulet.com:80
gate.homeamulet.com:80
mails.homeamulet.com:80
smtp1.homeamulet.com:80
sniper.homeamulet.com:80
mail9.homeamulet.com:80

Mutex

Wcz9EBJUcgnW

Attributes

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

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x002000000002b378-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2712	Copilot.exe
1164	Copilot.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	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	Copilot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Copilot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Copilot.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4876	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
4288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe
4416	Copilot.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4416	Copilot.exe
Token: SeDebugPrivilege	2712	Copilot.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4416 wrote to memory of 2752	4416	Copilot.exe	79
PID 4416 wrote to memory of 2800	4416	Copilot.exe	81
PID 2752 wrote to memory of 4288	2752	cmd.exe	83
PID 2800 wrote to memory of 4876	2800	cmd.exe	84
PID 2800 wrote to memory of 1164	2800	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\Copilot.exe
"C:\Users\Admin\AppData\Local\Temp\Copilot.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Copilot" /tr '"C:\Users\Admin\AppData\Roaming\Copilot.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Copilot" /tr '"C:\Users\Admin\AppData\Roaming\Copilot.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4288
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD2.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4876
- - C:\Users\Admin\AppData\Roaming\Copilot.exe
    "C:\Users\Admin\AppData\Roaming\Copilot.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1164

C:\Users\Admin\AppData\Roaming\Copilot.exe
"C:\Users\Admin\AppData\Roaming\Copilot.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2712

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

Copilot.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Copilot.exe.log
Size 522B
SHA256 3a8c487575696f7ace931dc220c85a47d33e0ead96aa9e47c705fee5dfac667a
MD5 db9f45365506c49961bfaf3be1475ad2
SHA1 6bd7222f7b7e3e9685207cb285091c92728168e4
SHA512 807028e2aed5b25b2d19ec4f09867746456de4e506c90c73e6730b35303511349a79ca0b9290509664edc0433d47e3fc7f2661534293ebb82185b1494da86a41
TLSH
T10DF09E303231B1D848023F42181C7A8942EF0746B7B8DF2D3650231EDC350176F212E3
MD5 SHA1 SHA512 TLSH

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tmpBD2.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpBD2.tmp.bat
Size 150B
SHA256 effc3e2662b26169ed3e1951c4d9db3c785fae3fde7064a1f75cdbe9b2d9f8e2
MD5 2566ab11240c7b334fa54d6f29be0a2a
SHA1 23cb5747eb027adc8323d3cd68091464dc569405
SHA512 9853601f4fa8d2939728cea51ebfe5f202b9c88be5a00a9e9f404cd842355cc406c44c7bda7a8cbae778858a8f85a85e64ba16c1042153918c9e4f64a8284642
TLSH
T107C08C8751CAEA4E2805585306BAD48C916668193E40FB40D324411E628044CE499281
MD5 SHA1 SHA512 TLSH

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Copilot.exe

Path C:\Users\Admin\AppData\Roaming\Copilot.exe
Size 46KB
SHA256 7a02837baee58bb02a22e197e36bcaa3d354b6f265e05ec6cc0771e7ada23b1f
MD5 05c60f36f19d288f3e6cbaa540d595ef
SHA1 a6a3b13e723bef24221dff5e100b7cb73a6ab777
SHA512 033b64db8e66c8d2fed8855554fc95624982d8ff262ca27d5b5377cfd41189acc23cd1f0e9d656d98f52b1667d60f0831422b3ccb9cfb6bcec6ce7111a309b87
SSDEEP 768:JaIFbILXCaRGUxv0wSGGx8Q4u2M/6TJr1PMJIjb0g47FxMltANmBuAKUjLIjmM5q:JaIFsJRp8d8/MKbb4hxMHqspIiM5bff+
TLSH
T14E233C003BE9C16AF2BD4F7899F2720546B9F2572603D68E1C8412DA5613FC6DA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1164-13-0x0000000004EB0000-0x0000000004EBB000-memory.dmp

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memory/2712-14-0x0000000003390000-0x000000000339B000-memory.dmp

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memory/4416-0-0x00000000003F0000-0x0000000000402000-memory.dmp

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memory/4416-1-0x0000000002780000-0x0000000002790000-memory.dmp

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memory/4416-2-0x0000000004E80000-0x0000000004F1C000-memory.dmp

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memory/4876-11-0x0000000000C80000-0x0000000000D42000-memory.dmp

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