asyncrat | 3a3bcc0358b5b5a00a620b4d06a14ed316a22894a6f08a5534fb8c18ed522fc0

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 11:09

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General

Target
Malware.exe
Size 56KB
Sample261002-m8635aycja
SHA256 3a3bcc0358b5b5a00a620b4d06a14ed316a22894a6f08a5534fb8c18ed522fc0
MD5 ea69903e5c2bfb09afce23b64098ec4e
SHA1 f2adc57fbc27166cd013514a90dce534e940bdc5
SHA512 4ed78be3290dad4312762c90d4c5abbb0b68511fe125b2c3be85fd3c5f4b7c339b162cf06004f82f97b6bda24c6b4d56fedeec5e73d99cd5f5f9dd8c2d2430b1
SSDEEP 1536:6uf09TH2w24vaCkE3bDXSszuz0dpkejNUHLTq:6ufoTH2w2YZkE3bD7uQ3kINmq
TLSH
T14B435C0037E9812BF2BE5FB8ADF22104467AE2777603D54E1CC451CB5713BC69A52AFA
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

onle.my:443
onle.my:8848
onle.my:8080

Mutex

kBVPjakHQ19X

Attributes

delay
3
install
true
install_file
AsyncRat.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/0x000e00000001c4c8-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
468	AsyncRat.exe
4304	AsyncRat.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
2508	cmd.exe
4644	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	AsyncRat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AsyncRat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Malware.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4968	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
5728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe
4132	Malware.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4132	Malware.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 4644	4132	Malware.exe	89
PID 4132 wrote to memory of 2508	4132	Malware.exe	91
PID 4644 wrote to memory of 5728	4644	cmd.exe	93
PID 2508 wrote to memory of 4968	2508	cmd.exe	94
PID 2508 wrote to memory of 4304	2508	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\Malware.exe
"C:\Users\Admin\AppData\Local\Temp\Malware.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4644
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5728
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5AB9.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4968
- - C:\Users\Admin\AppData\Roaming\AsyncRat.exe
    "C:\Users\Admin\AppData\Roaming\AsyncRat.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4304

C:\Users\Admin\AppData\Roaming\AsyncRat.exe
"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:468

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

tmp5AB9.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5AB9.tmp.bat
Size 152B
SHA256 8d0447ebd6cb5da69021de8b751d1e6e13e3b0bd2ec51fa142bb5339e096a1f3
MD5 4582c9508f0931a2eab4b831f248d354
SHA1 5d71a50c1bd21647f5955815ac6701a39650f103
SHA512 9f4ee981df73661249fc7e2f3066f5d86714bc940b60434b283010b6a8e89b87f15d18e0a319c5ddf639d95415117768dc97a9e7cbdf33bbc1509e1fb6a22ebd
TLSH
T1C8C08C4292C6AA2E2C05341312FA9D8C95766C5A3E40AB40C30845AA1280588F0A9286
MD5 SHA1 SHA512 TLSH

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AsyncRat.exe

Path C:\Users\Admin\AppData\Roaming\AsyncRat.exe
Size 56KB
SHA256 3a3bcc0358b5b5a00a620b4d06a14ed316a22894a6f08a5534fb8c18ed522fc0
MD5 ea69903e5c2bfb09afce23b64098ec4e
SHA1 f2adc57fbc27166cd013514a90dce534e940bdc5
SHA512 4ed78be3290dad4312762c90d4c5abbb0b68511fe125b2c3be85fd3c5f4b7c339b162cf06004f82f97b6bda24c6b4d56fedeec5e73d99cd5f5f9dd8c2d2430b1
SSDEEP 1536:6uf09TH2w24vaCkE3bDXSszuz0dpkejNUHLTq:6ufoTH2w2YZkE3bD7uQ3kINmq
TLSH
T14B435C0037E9812BF2BE5FB8ADF22104467AE2777603D54E1CC451CB5713BC69A52AFA
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/468-12-0x0000000075170000-0x000000007592C000-memory.dmp

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memory/468-14-0x0000000075170000-0x000000007592C000-memory.dmp

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memory/4132-0-0x0000000075192000-0x0000000075193000-memory.dmp

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memory/4132-1-0x00000000007A0000-0x00000000007B4000-memory.dmp

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memory/4132-2-0x0000000075180000-0x000000007593C000-memory.dmp

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memory/4132-3-0x00000000052D0000-0x000000000536C000-memory.dmp

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memory/4132-9-0x0000000075180000-0x000000007593C000-memory.dmp

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