asyncrat | b769aedb94cba85f44862c06da693bfa67576d497fc8371dd3070c6ce1f464ef

Analysis

max time kernel
148s
max time network
143s
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, 01:55

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General

Target
zxfcsdretert.exe
Size 45KB
Sample260913-cb55fsde96
SHA256 b769aedb94cba85f44862c06da693bfa67576d497fc8371dd3070c6ce1f464ef
MD5 5a48cc290416bd686eab769a58a19b51
SHA1 f627fca6fc91d3a98201a0c09ee04ff674db53ff
SHA512 ebe654a6ad707d134cb9eab858fdefb85036e1db357298e458d2bab0e0e537457a1bdb064988a9483670af88edb4e505acf0791ba8d80546e3d46d8ec88f4c7d
SSDEEP 768:puAwNTR4ydbWUnrGJmo2q7qfH0hEITPIuzjbigX3iySkKe+9kp2yiXxuFRsBDZ7x:puAwNTRZ22JM38u3bFXSyS191Td7x
TLSH
T11C232B003BE8812BF2BE5F78A8F26105867AF2676603D54E2CC451DB5613FC6D6426FE
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

phimsexxxx.net:80
phimsexxxx.net:443
phimsexxxx.net:7788
phimsexxxx.net:7879
phimsexxxx.net:3577
phimsexxxx.net:8888
phimsexxxx.net:3306
phimsexxxx.net:21
phimsexxxx.net:22
www.phimsexxxx.net:80
www.phimsexxxx.net:443
www.phimsexxxx.net:7788
www.phimsexxxx.net:7879
www.phimsexxxx.net:3577
www.phimsexxxx.net:8888
www.phimsexxxx.net:3306
www.phimsexxxx.net:21
www.phimsexxxx.net:22

Mutex

OdjnQgdmXrf2

Attributes

delay
3
install
true
install_file
zxfcsdretert.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/0x0006000000016b55-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4280	zxfcsdretert.exe
1136	zxfcsdretert.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
4180	cmd.exe
1976	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	zxfcsdretert.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	zxfcsdretert.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zxfcsdretert.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2608	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
5104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe
5612	zxfcsdretert.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5612	zxfcsdretert.exe
Token: SeDebugPrivilege	4280	zxfcsdretert.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5612 wrote to memory of 4180	5612	zxfcsdretert.exe	87
PID 5612 wrote to memory of 1976	5612	zxfcsdretert.exe	89
PID 4180 wrote to memory of 5104	4180	cmd.exe	91
PID 1976 wrote to memory of 2608	1976	cmd.exe	92
PID 1976 wrote to memory of 1136	1976	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\zxfcsdretert.exe
"C:\Users\Admin\AppData\Local\Temp\zxfcsdretert.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "zxfcsdretert" /tr '"C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4180
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "zxfcsdretert" /tr '"C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5104
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp84B7.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1976
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2608
- - C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe
    "C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1136

C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe
"C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4280

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

tmp84B7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp84B7.tmp.bat
Size 156B
SHA256 fd2eaaedc1427288ffb227897f5d00c318d31fcd7492413889ba7f33454b4216
MD5 9791a15fc93bdac5e3c2fe94ff843060
SHA1 ead7023a31785b0ef9f6d935a86ab1cd957c0558
SHA512 e52fcbd7f9592c296ea298577112e60d9fd5de4d8e215a5b0a8ea6ce2fd4fe596573510131107de5a946ab5dfd2430fa40407e008c1238cb3f9bdc5d9f02d7e9
TLSH
T1E1C08C4261C5AA0F2889943302BAD89CB1AA6C293E81BB8083084009538084CE199385
MD5 SHA1 SHA512 TLSH

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zxfcsdretert.exe

Path C:\Users\Admin\AppData\Roaming\zxfcsdretert.exe
Size 45KB
SHA256 b769aedb94cba85f44862c06da693bfa67576d497fc8371dd3070c6ce1f464ef
MD5 5a48cc290416bd686eab769a58a19b51
SHA1 f627fca6fc91d3a98201a0c09ee04ff674db53ff
SHA512 ebe654a6ad707d134cb9eab858fdefb85036e1db357298e458d2bab0e0e537457a1bdb064988a9483670af88edb4e505acf0791ba8d80546e3d46d8ec88f4c7d
SSDEEP 768:puAwNTR4ydbWUnrGJmo2q7qfH0hEITPIuzjbigX3iySkKe+9kp2yiXxuFRsBDZ7x:puAwNTRZ22JM38u3bFXSyS191Td7x
TLSH
T11C232B003BE8812BF2BE5F78A8F26105867AF2676603D54E2CC451DB5613FC6D6426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4280-12-0x0000000074A80000-0x000000007523C000-memory.dmp

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memory/4280-14-0x0000000074A80000-0x000000007523C000-memory.dmp

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memory/5612-0-0x0000000074A92000-0x0000000074A93000-memory.dmp

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memory/5612-1-0x0000000000150000-0x0000000000162000-memory.dmp

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memory/5612-2-0x0000000074A80000-0x000000007523C000-memory.dmp

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memory/5612-3-0x00000000028F0000-0x000000000298C000-memory.dmp

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memory/5612-8-0x0000000074A80000-0x000000007523C000-memory.dmp

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