asyncrat | 8acb4a3ad982cf15198630398f4fbb8b8fbf830671f6580bceac5511b4f4f5e3

Analysis

max time kernel
148s
max time network
145s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
13/09/2026, 01:53

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General

Target
cvcxvsdf.exe
Size 45KB
Sample260913-cbhddsar9y
SHA256 8acb4a3ad982cf15198630398f4fbb8b8fbf830671f6580bceac5511b4f4f5e3
MD5 977c9f23c0576682404fb148134214c5
SHA1 ae3a748055779b7bd4d845297bfbf6d695f93b86
SHA512 575039446e7fee89576ee7a0ba7ba9438d1b15fef7b2f811ec421a42b9e37d4dafa124fdb463f984a6670c44f35aa2b09c22e308c9e74990234099d87523da28
SSDEEP 768:ZuoodT1LxHaFzWUfbmBmo2qb1+GtCVnJtHuPI+zjbkgX3iMFjbngHhvSWVBDZrx:ZuoodT1LoG2I+TB3+3brXSHdrx
TLSH
T187232B003BE9852BF2BE4F7898F26145467AF1633603D68D2CC451DB5723FC69A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

admin defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Admin

sexviet360.com:80
sexviet360.com:443
sexviet360.com:7788
sexviet360.com:7879
sexviet360.com:3577
sexviet360.com:8888
sexviet360.com:3306
sexviet360.com:21
sexviet360.com:22
www.sexviet360.com:80
www.sexviet360.com:443
www.sexviet360.com:7788
www.sexviet360.com:7879
www.sexviet360.com:3577
www.sexviet360.com:8888
www.sexviet360.com:3306
www.sexviet360.com:21
www.sexviet360.com:22

Mutex

VVBX2IdndnX7

Attributes

delay
3
install
true
install_file
cvcxvsdf.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/0x000b00000001a145-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2284	cvcxvsdf.exe
760	cvcxvsdf.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
2996	cmd.exe
3928	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	cvcxvsdf.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	cvcxvsdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvcxvsdf.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1104	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
2848	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe
676	cvcxvsdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	676	cvcxvsdf.exe
Token: SeDebugPrivilege	2284	cvcxvsdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 676 wrote to memory of 2996	676	cvcxvsdf.exe	88
PID 676 wrote to memory of 3928	676	cvcxvsdf.exe	89
PID 2996 wrote to memory of 2848	2996	cmd.exe	92
PID 3928 wrote to memory of 1104	3928	cmd.exe	93
PID 3928 wrote to memory of 760	3928	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\cvcxvsdf.exe
"C:\Users\Admin\AppData\Local\Temp\cvcxvsdf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cvcxvsdf" /tr '"C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "cvcxvsdf" /tr '"C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2848
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp48C7.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1104
- - C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe
    "C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:760

C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe
"C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2284

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

tmp48C7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp48C7.tmp.bat
Size 152B
SHA256 8bba37998fd1bd0e49e7efbea3ebb2086d6194383e7c27970fe9b016bc19661b
MD5 2a017c65628f787a3dfa62f0bd328fef
SHA1 11b8bb387d1f3fa8d4173ba8bdf5e771b0b5ded9
SHA512 f751fbb089e7164249311d7056973eede19f312a7fed76ccb894f53c74e9f89018a5c5c96f180fe8b8be6065f695c3f0f9596b710377d6012698a07127391b7d
TLSH
T1EAC02B8252C6EB1F2805241312FAD48DF2F26C593F84FF10D708445D13C0449F0D93C1
MD5 SHA1 SHA512 TLSH

Submit Download

cvcxvsdf.exe

Path C:\Users\Admin\AppData\Roaming\cvcxvsdf.exe
Size 45KB
SHA256 8acb4a3ad982cf15198630398f4fbb8b8fbf830671f6580bceac5511b4f4f5e3
MD5 977c9f23c0576682404fb148134214c5
SHA1 ae3a748055779b7bd4d845297bfbf6d695f93b86
SHA512 575039446e7fee89576ee7a0ba7ba9438d1b15fef7b2f811ec421a42b9e37d4dafa124fdb463f984a6670c44f35aa2b09c22e308c9e74990234099d87523da28
SSDEEP 768:ZuoodT1LxHaFzWUfbmBmo2qb1+GtCVnJtHuPI+zjbkgX3iMFjbngHhvSWVBDZrx:ZuoodT1LoG2I+TB3+3brXSHdrx
TLSH
T187232B003BE9852BF2BE4F7898F26145467AF1633603D68D2CC451DB5723FC69A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/676-0-0x0000000074952000-0x0000000074953000-memory.dmp

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memory/676-1-0x0000000000900000-0x0000000000912000-memory.dmp

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memory/676-2-0x0000000074940000-0x00000000750FC000-memory.dmp

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memory/676-3-0x0000000005460000-0x00000000054FC000-memory.dmp

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memory/676-9-0x0000000074940000-0x00000000750FC000-memory.dmp

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memory/2284-12-0x0000000074940000-0x00000000750FC000-memory.dmp

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memory/2284-14-0x0000000074940000-0x00000000750FC000-memory.dmp

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